diff --git a/AI_prompt.md b/AI_prompt.md
index 3e9998a..5cbb13a 100644
--- a/AI_prompt.md
+++ b/AI_prompt.md
@@ -1,25 +1,16 @@
Consider the following scenarios:
-Scenario 1: The "Command & Control" Loop (Low Latency)Focus: Small payloads, Core NATS, bi-directional JSON.The Action: A user on a JavaScript dashboard clicks a "Start Simulation" button. This sends a JSON configuration (parameters like step_size and iterations) to Julia.The Flow: * JS (Sender): Recognizes the message is small ($< 10KB$). Packages it as a direct transport JSON envelope.Julia (Receiver): Listens on the NATS subject, decodes the JSON, and immediately acknowledges receipt with a "Running" status.Project Requirement Met: Fast, low-overhead communication for control signals without involving the fileserver.
-Scenario 2: The "Deep Dive" Analysis (High Bandwidth)Focus: Large Arrow tables, Claim-Check pattern, Julia to JS.The Action: Julia finishes a heavy computation and produces a 500MB DataFrame with 10 million rows. It needs to send this to the JS frontend for visualization (e.g., using Perspective.js or D3).The Flow:Julia (Sender): Converts the DataFrame to an Arrow IPC stream. It sees the size is $> 1MB$, so it uploads the bytes to the HTTP fileserver. It then publishes a NATS message with transport: "link" and the URL.JS (Receiver): Receives the URL, fetches the data via fetch(), and uses tableFromIPC() to load the data into memory with zero-copy.Project Requirement Met: Handling massive datasets that exceed NATS message limits while maintaining data integrity across languages.
-Scenario 3: Live Audio/Signal Processing (Multimedia & Metadata)Focus: Raw binary, bi-directional streaming, NATS Headers.The Action: The JS client captures a 2-second "chunk" of microphone audio. It needs Julia to perform a Fast Fourier Transform (FFT) or AI transcription.The Flow:JS (Sender): Sends the raw binary WAV/PCM data. It uses NATS Headers to store the metadata ($fs = 44.1kHz$, $channels = 1$) to keep the payload purely binary.Julia (Receiver): Processes the audio and sends back a JSON result (the transcription) and an Arrow Table (the frequency spectrum data).Project Requirement Met: Bi-directional flow involving mixed media (Audio) and technical results (Arrow).
-Scenario 4: The "Catch-Up" (Persistence & JetStream)Focus: NATS JetStream, late-joining consumers, state sync.The Action: Julia is constantly publishing "System Health" updates. The JS dashboard is closed for 10 minutes. When the user re-opens the dashboard, they need to see the last 10 minutes of history.The Flow:NATS (Server): Uses a JetStream with a Limits retention policy.JS (Consumer): Connects and requests a "Replay" from the last 10 minutes. It receives a mix of direct (small updates) and link (historical snapshots) messages.Project Requirement Met: Temporal decoupling—consumers can receive data that was sent while they were offline.
-
-Role: Principal Systems Architect & Lead Software Engineer.Objective: Implement a high-performance, bi-directional data bridge between a Julia service and a JavaScript (Node.js) service using NATS (Core & JetStream).⚠️ STRICT ARCHITECTURAL CONSTRAINTS (Non-Negotiable)Transport Strategy (Claim-Check Pattern):Direct Path: If payload is < 1MB, send data directly via NATS inside the message envelope (Base64 encoded).Link Path: If payload is > 1MB, upload to a shared HTTP fileserver/store. The NATS message must only contain the metadata and the download URL.Tabular Data Format: * MUST use Apache Arrow IPC Stream for all tables/DataFrames. No CSV or standard JSON-serialization of tables allowed.System Symmetry: * Both services must function as Producers AND Consumers.Modular Elegance: * Implementation must be abstracted into a SmartSend function and a SmartReceive handler. The developer calling these functions should not need to care if the data is going via NATS direct or HTTP link.Technical Stack & Use CasesJulia: NATS.jl, Arrow.jl, JSON3.jl, HTTP.jl.Node.js: nats.js, apache-arrow.Scenarios to Support: * Large Data: Sending a 500MB Arrow table from Julia $\rightarrow$ JS.Media: Sending a 5MB WAV file from JS $\rightarrow$ Julia.Signals: Sending small JSON control commands ($< 10KB$) directly via NATS.Implementation Requirements1. Unified JSON Envelope:Define a schema containing: correlation_id (UUID), type (table/binary/json), transport (direct/link), payload (if direct), and url (if link).2. The Julia Module:Implement SmartSend(subject, data, type): Handles Arrow serialization to an IOBuffer, checks size, and manages HTTP uploads for large blobs.Implement SmartReceive(msg): Parses envelope, handles the HTTP fetch with Exponential Backoff (to avoid race conditions), and restores the DataFrame.Include a basic HTTP.listen server to serve as the temporary storage.3. The JavaScript Module:Implement a symmetric SmartSend using nats.js and apache-arrow.Implement a JetStream Pull Consumer for SmartReceive to ensure backpressure and memory safety.4. Performance & Reliability:Demonstrate "Zero-Copy" reading of the Arrow IPC stream on the JS side.Log the correlation_id at every stage for distributed tracing.
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-
-Create a walkthrough for Julia service-A service sending a mix-content chat message to Julia service-B. the chat message must includes
+Scenario 1: The "Command & Control" Loop (Low Latency)Focus: Small payloads, bi-directional JSON.The Action: A user on a JavaScript dashboard clicks a "Start Simulation" button. This sends a JSON configuration (parameters like step_size and iterations) to Julia.The Flow: * JS (Sender): Recognizes the message is small ($< 10KB$). Packages it as a direct transport JSON envelope.Julia (Receiver): Receives the JSON, decodes it, and immediately acknowledges receipt with a "Running" status.Project Requirement Met: Fast, low-overhead communication for control signals without involving the fileserver.
+Scenario 2: The "Deep Dive" Analysis (High Bandwidth)Focus: Large Arrow tables, Claim-Check pattern, Julia to JS.The Action: Julia finishes a heavy computation and produces a 500MB DataFrame with 10 million rows. It needs to send this to the JS frontend for visualization (e.g., using Perspective.js or D3).The Flow:Julia (Sender): Converts the DataFrame to an Arrow IPC stream. It sees the size is $> 1MB$, so it uploads the bytes to the HTTP fileserver. It then sends a message with transport: "link" and the URL.JS (Receiver): Receives the URL, fetches the data via fetch(), and uses tableFromIPC() to load the data into memory with zero-copy.Project Requirement Met: Handling massive datasets that exceed message limits while maintaining data integrity across languages.
+Scenario 3: Live Audio/Signal Processing (Multimedia & Metadata)Focus: Raw binary, bi-directional streaming, headers for metadata.The Action: The JS client captures a 2-second "chunk" of microphone audio. It needs Julia to perform a Fast Fourier Transform (FFT) or AI transcription.The Flow:JS (Sender): Sends the raw binary WAV/PCM data. It uses transport headers to store the metadata ($fs = 44.1kHz$, $channels = 1$) to keep the payload purely binary.Julia (Receiver): Processes the audio and sends back a JSON result (the transcription) and an Arrow Table (the frequency spectrum data).Project Requirement Met: Bi-directional flow involving mixed media (Audio) and technical results (Arrow).
+Scenario 4: The "Catch-Up" (Persistence & State Sync)Focus: Message persistence, late-joining consumers, state sync.The Action: Julia is constantly publishing "System Health" updates. The JS dashboard is closed for 10 minutes. When the user re-opens the dashboard, they need to see the last 10 minutes of history.The Flow:Transport (Server): Uses a persistence layer with a Limits retention policy.JS (Consumer): Connects and requests a "Replay" from the last 10 minutes. It receives a mix of direct (small updates) and link (historical snapshots) messages.Project Requirement Met: Temporal decoupling—consumers can receive data that was sent while they were offline.
+Role: Principal Systems Architect & Lead Software Engineer.Objective: Implement a high-performance, bi-directional data bridge between a Julia service and a JavaScript (Node.js) service, using a unified message envelope with Claim-Check pattern for large payloads.⚠️ STRICT ARCHITECTURAL CONSTRAINTS (Non-Negotiable)Transport Strategy (Claim-Check Pattern):Direct Path: If payload is < 1MB, send data directly inside the message envelope (Base64 encoded).Link Path: If payload is > 1MB, upload to a shared HTTP fileserver/store. The message must only contain the metadata and the download URL.Tabular Data Format: * MUST use Apache Arrow IPC Stream for all tables/DataFrames. No CSV or standard JSON-serialization of tables allowed.System Symmetry: * Both services must function as Producers AND Consumers.Modular Elegance: * Implementation must be abstracted into a smartpack function and a smartunpack handler. The developer calling these functions should not need to care if the data is going via direct or HTTP link.Technical Stack & Use CasesJulia: Arrow.jl, JSON3.jl, HTTP.jl.Node.js: apache-arrow, native fetch.Scenarios to Support: * Large Data: Sending a 500MB Arrow table from Julia $\rightarrow$ JS.Media: Sending a 5MB WAV file from JS $\rightarrow$ Julia.Signals: Sending small JSON control commands ($< 10KB$) directly in the envelope.Implementation Requirements1. Unified JSON Envelope:Define a schema containing: correlation_id (UUID), type (table/binary/json), transport (direct/link), payload (if direct), and url (if link).2. The Julia Module:Implement smartpack(subject, data, type): Handles Arrow serialization to an IOBuffer, checks size, and manages HTTP uploads for large blobs.Implement smartunpack(msg): Parses envelope, handles the HTTP fetch with Exponential Backoff (to avoid race conditions), and restores the DataFrame.Include a basic HTTP.listen server to serve as the temporary storage.3. The JavaScript Module:Implement a symmetric smartpack using native fetch and apache-arrow.Implement a JetStream P... (line truncated to 2000 chars)
I updated the following:
-- msghandler.jl. Essentially I add NATS_connection keyword and new publish_message function to support the keyword.
+- msghandler.jl. Essentially I add transport_connection keyword and new publish_message function to support the keyword.
Use them and ONLY them as ground truth.
Then update the following files accordingly:
- architecture.md
@@ -30,19 +21,12 @@ All API should be semantically consistent and naming should be consistent across
-
-
-
-
-
Task: Update msghandler.js to reflect recent changes in msghandler.jl and docs
Context: msghandler.jl and docs has been updated.
Requirements:
Source of Truth: Treat the updated msghandler.jl and docs as the definitive source.
-API Consistency: Ensure the Main Package API (e.g., smartsend(), publish_message()) uses consistent naming across all three supported languages.
-Ecosystem Variance: Low-level native functions (e.g., NATS.connect(), JSON.read()) should follow the conventions of the specific language ecosystem and do not require cross-language consistency.
-
-
+API Consistency: Ensure the Main Package API (e.g., smartpack(), publish_message()) uses consistent naming across all three supported languages.
+Ecosystem Variance: Low-level native functions (e.g., connect(), JSON.parse()) should follow the conventions of the specific language ecosystem and do not require cross-language consistency.
@@ -67,8 +51,6 @@ Now do the following:
-
-
I'm expanding this Julia package (msghandler) into a cross-platform project by adding
a JavaScript, Python and MicroPython implementation.
The following will serve as the ground truth:
@@ -91,9 +73,12 @@ Now, help me do the following:
+
+
+
# ---------------------------------------------- 100 --------------------------------------------- #
-Got it — let’s rebuild your table in my own teaching style, keeping it crisp, intuitive, and easy for students to grasp. I’ll emphasize **purpose, audience, format, example, and KPI** in a way that flows like a story of how projects move from idea → contract → design → code → review → operations.
+Got it — let's rebuild your table in my own teaching style, keeping it crisp, intuitive, and easy for students to grasp. I'll emphasize **purpose, audience, format, example, and KPI** in a way that flows like a story of how projects move from idea → contract → design → code → review → operations.
---
@@ -101,42 +86,35 @@ Got it — let’s rebuild your table in my own teaching style, keeping it crisp
| Document | Purpose (Rationale) | Primary Audience | Format / Content | Example (SaaS Context) | Measurement (KPI) |
|-----------------|---------------------|-----------------|------------------|------------------------|-------------------|
-| **Requirements** | Capture the **business intent** — why we’re building this and what success looks like. Defines boundaries and user‑visible outcomes. | Stakeholders, Product Owners, Lead Developers | User stories, PRDs, acceptance criteria, non‑functional constraints. | “System must process tabular data from Julia to SvelteKit UI with <200ms latency for 5‑member teams.” | 95% of requests complete <200ms (synthetic monitoring). |
-| **Specification** | The **technical contract** — precise rules for inputs, outputs, and data shape. Ensures consistency across dev and test. | Developers, QA Engineers, CI/CD pipelines | OpenAPI, Protobuf, AsyncAPI. Endpoint definitions, schemas, error codes. | `contract.yaml` defining a NATS subject that accepts Arrow streams with snake_case headers. | 100% of messages validated against spec (CI block rate). |
+| **Requirements** | Capture the **business intent** — why we're building this and what success looks like. Defines boundaries and user‑visible outcomes. | Stakeholders, Product Owners, Lead Developers | User stories, PRDs, acceptance criteria, non‑functional constraints. | "System must process tabular data from Julia to SvelteKit UI with <200ms latency for 5‑member teams." | 95% of requests complete <200ms (synthetic monitoring). |
+| **Specification** | The **technical contract** — precise rules for inputs, outputs, and data shape. Ensures consistency across dev and test. | Developers, QA Engineers, CI/CD pipelines | OpenAPI, Protobuf, AsyncAPI. Endpoint definitions, schemas, error codes. | `contract.yaml` defining a subject that accepts Arrow streams with snake_case headers. | 100% of messages validated against spec (CI block rate). |
| **Architecture** | The **blueprint** — how components fit together, interact, and scale. Guides system structure and trade‑offs. | Architects, Senior Developers, DevOps | C4 diagrams, Mermaid.js, component/network/storage models. | Diagram showing 6‑node cluster routing traffic via Caddy → Node.js API → Julia pods. | 100% of major decisions logged with trade‑off analysis. |
-| **Walkthrough** | The **story of flow** — shows how pieces connect end‑to‑end and why steps are sequenced. Builds intuition for new devs. | New Developers, Team Members | TOUR.md, Loom videos, sequence diagrams. Step‑by‑step traces with rationale. | “UI sends JSON → Node.js wraps Claim‑Check → Julia pulls Arrow data (prevents NATS overflow).” | New developers ship feature in <2 days (PR timeline). |
+| **Walkthrough** | The **story of flow** — shows how pieces connect end‑to‑end and why steps are sequenced. Builds intuition for new devs. | New Developers, Team Members | TOUR.md, Loom videos, sequence diagrams. Step‑by‑step traces with rationale. | "UI sends JSON → Node.js wraps Claim‑Check → Julia pulls Arrow data (prevents overflow)." | New developers ship feature in <2 days (PR timeline). |
| **Implementation** | The **real code** — business logic, helpers, tests, configs. Where design becomes executable. | Developers, Code Reviewers | Source code, README.md, unit tests, setup scripts. | Julia function for matrix calculation + SvelteKit component rendering table. | >80% unit test coverage, <5% drift from spec. |
| **Validation** | The **enforcer** — ensures implementation matches the spec. Blocks drift and human error. | Automation servers, QA, Lead Developers | CI jobs, contract tests, linting, integration checks. | CI job rejects PR with camelCase field not allowed by YAML spec. | <1% of PRs bypass validation gates. |
| **Runbook** | The **operational manual** — how the system lives in production, scales, and recovers. Guides on‑call engineers. | DevOps, SREs, On‑call Developers | K8s manifests, Helm charts, Markdown guides. Deployment, scaling, backup/restore, troubleshooting. | GitOps manifest ensuring 6 Julia replicas restart if memory >80%. | MTTR <15 minutes for P1 incidents. |
-
-
-
-
-
# ---------------------------------------------- 100 --------------------------------------------- #
SDD + GitOps Documentation Stack
Document,"Purpose (The ""Rationale"")",Primary Audience,Format / Content,Example (SaaS Context),"Measurement (KPI)"
Requirements,"Defines the ""Why"" and the Business Boundary. It sets the constraints and success criteria so the team knows when a feature is ""done"" from a user's perspective.","Stakeholders, Product Owners, Lead Developers","Format: User Stories, PRDs. Content: Functional goals, non-functional requirements (latency, scale), and explicit ""out-of-scope"" items.","""The system must process high-volume tabular data from Julia to the SvelteKit UI with <200ms latency for 5-member teams."",""Pass/Fail: 95% of requests complete <200ms (measured via synthetic monitoring)""
-The Spec,"The Technical Contract. It serves as the single source of truth that defines the shape of data. In SDD, this file drives code generation and automated testing.","Developers, QA Engineers, CI/CD Pipelines","Format: OpenAPI (YAML), Protobuf, AsyncAPI. Content: Endpoint definitions, strict data types, error codes, and request/response schemas.",A contract.yaml defining a NATS subject that accepts an Apache Arrow stream with specific snake_case headers.",""Schema Validation Rate: 100% of messages validated against spec (CI block rate)""
+The Spec,"The Technical Contract. It serves as the single source of truth that defines the shape of data. In SDD, this file drives code generation and automated testing.","Developers, QA Engineers, CI/CD Pipelines","Format: OpenAPI (YAML), Protobuf, AsyncAPI. Content: Endpoint definitions, strict data types, error codes, and request/response schemas.",A contract.yaml defining a subject that accepts an Apache Arrow stream with specific snake_case headers.",""Schema Validation Rate: 100% of messages validated against spec (CI block rate)""
Architecture,"The Structural Blueprint. It explains how the ""pieces"" are arranged in the cluster. It defines the relationships between services, databases, and external providers.","System Architects, Senior Developers, DevOps","Format: C4 Model Diagrams, Mermaid.js. Content: Component diagrams, network flow, storage strategy, and technology stack definitions.",A diagram showing how the 6-node cluster routes traffic through Caddy to the Node.js API and offloads heavy math to Julia pods.",""Architecture Decision Log: 100% of major decisions documented with trade-off analysis""
-Walkthrough,"The Intuition & Flow. It connects multiple APIs/services into a cohesive end-to-end story. It explains the ""steps"" and the ""rationale"" behind the sequence of operations.","New Developers, Current Team Members","Format: TOUR.md, Loom videos, Sequence Diagrams. Content: Step-by-step trace of a feature, explanation of state changes, and the ""why"" behind complex logic.","""End-to-End Trace:"" 1. UI sends JSON to Node.js. 2. Node.js wraps it in a Claim-Check. 3. Julia pulls the Arrow data. Rationale: This prevents NATS memory overflow.",""Onboarding Velocity: New developers deploy feature in <2 days (tracked via PR timeline)""
+Walkthrough,"The Intuition & Flow. It connects multiple APIs/services into a cohesive end-to-end story. It explains the ""steps"" and the ""rationale"" behind the sequence of operations.","New Developers, Current Team Members","Format: TOUR.md, Loom videos, Sequence Diagrams. Content: Step-by-step trace of a feature, explanation of state changes, and the ""why"" behind complex logic.","""End-to-End Trace:"" 1. UI sends JSON to Node.js. 2. Node.js wraps it in a Claim-Check. 3. Julia pulls the Arrow data. Rationale: This prevents overflow.",""Onboarding Velocity: New developers deploy feature in <2 days (tracked via PR timeline)""
Implementation,"The Functional Reality. This is the actual execution of the logic. In SDD, parts of this are auto-generated to ensure it never drifts from the Spec.","Developers, Code Reviewers","Format: Source Code (Git), README.md. Content: Business logic, internal helper functions, unit tests, and local setup instructions.",The Julia function that performs the matrix calculation and the SvelteKit component that renders the resulting table.",""Code Coverage: >80% unit test coverage, <5% test drift from spec""
Validation,"The Enforcement Layer. It ensures that the ""Reality"" (Code) actually matches the ""Contract"" (Spec). It prevents human error from breaking the system.","Automation Servers, QA, Lead Developers","Format: GitHub Actions, Dredd, Prism. Content: Contract tests, linting rules, and integration tests that check API compliance.",A CI job that blocks a Pull Request because a developer added a camelCase field that isn't allowed in the shared YAML spec.",""Block Rate: <1% of PRs reach production without validation (CI gate pass rate)""
Runbook,"The Operational Life-Support. It defines how the system lives in production and how to fix it. In GitOps, the ""State"" is declared here.","DevOps, SREs, On-call Developers","Format: K8s Manifests, Helm Charts, Markdown. Content: Deployment steps, scaling triggers, backup/restore commands, and troubleshooting guides.",A GitOps manifest in Flux that ensures 6 replicas of the Julia service are always running and restarts them if memory hits 80%.",""MTTR: <15 minutes for P1 incidents (tracked via incident management system)""
Do you understand the provided text? Don't fucking change the table content. I want you to add "Measurement (KPI)" column. it is only example of course. This table will be used for consult and teaching.
-
# ---------------------------------------------- 100 --------------------------------------------- #
Can you write the table and explain this approach and each doc in details then save to docs/SDD_FRAMEWORK.md so I can consult it later.
Don't forget to add How to use this approach effectively.
-
# ---------------------------------------------- 100 --------------------------------------------- #
Since I develop src folder before I adopt SDD_FRAMEWORK.md approach, can you check src folder and my current doc files then write docs/requirements.md according to SDD framework? Treat src as ground truth.
@@ -170,8 +148,6 @@ Can you update the content of the following files according to /home/ton/docker-
-
-
I updated ./src/msghandler.jl. Use it as groundtruth. Check ./docs folder I want to update the content of the following files according to /home/ton/docker-apps/sommpanion/ASG_Framework/ASG_Framework.md:
- ./docs/requirements.md
- ./docs/specification.md
@@ -180,7 +156,6 @@ I updated ./src/msghandler.jl. Use it as groundtruth. Check ./docs folder I want
-
Check the following files:
- ./docs/requirements.md
- ./docs/specification.md
@@ -189,6 +164,14 @@ Check the following files:
I would like to expand this package (msghandler) to include Rust support.
Now help me update Rust implementation of this package at ./src/msghandler.rs.
+
+I updated ./src/msghandler-csr.js. Can you check whether files in ./docs needs to be update?
+You should check the files sequencially in the following order:
+1) ./docs/requirements.md
+2) ./docs/specification.md
+3) ./docs/architecture.md
+4) ./docs/walkthrough.md
+
@@ -197,6 +180,108 @@ I want to build a client-side-rendering Dioxus-based chat webapp.
Dioxus version 0.7+ should be great.
I already populate the current folder for the project.
my server REST API endpoint is sommpanion.yiem.cc/agent-fronent/api/v1/chat but I didn't run the server yet. A message format is JSON string.
-I just placed my custom package for encode and decode message at ./src/msghandler.rs. smartsend() is for encoding and smartreceive() is for decoding.
+I just placed my custom package for encode and decode message at ./src/msghandler.rs. smartpack() is for encoding and smartunpack() is for decoding.
you may also check the file /home/ton/docker-apps/sommpanion/msghandler/docs/walkthrough.md for more info about my package.
You can test whether Dioxus webapp can be build using this command "dx bundle --web --release --debug-symbols=false"
+
+
+
+
+
+
+
+
+
+Do you know about ChatGPT chat interface? I want to build similar webapp.
+My app should be built as client-side-rendering Dioxus-based (version 0.7+).
+I already build backend server and I intend to communicate with the webapp using json string that encode the following message envelop:
+{
+ "correlation_id": "a1b2c3d4...",
+ "msg_id": "e5f6g7h8...",
+ "timestamp": "2026-03-13T16:30:00.000Z",
+ "send_to": "",
+ "msg_purpose": "chat",
+ "sender_name": "chat-webapp",
+ "sender_id": "sender-uuid...",
+ "receiver_name": "agent-backend",
+ "receiver_id": "",
+ "reply_to": "",
+ "reply_to_msg_id": "",
+ "broker_url": "myservice.mydomain.com/subservice/api/v1/chat",
+ "metadata": {},
+ "payloads": [
+ {
+ "id": "payload-uuid...",
+ "dataname": "msg",
+ "payload_type": "text",
+ "transport": "direct",
+ "encoding": "base64",
+ "size": 20,
+ "data": "SGVsbG8hIEknIHRlbCB5b3UgSW4gZW5nbGlzaC4=",
+ "metadata": {"payload_bytes": 20}
+ },
+ {
+ "id": "payload-uuid...",
+ "dataname": "avatar",
+ "payload_type": "image",
+ "transport": "direct",
+ "encoding": "base64",
+ "size": 150000,
+ "data": "iVBORw0KGgoAAAANSUhEUgAA...",
+ "metadata": {"payload_bytes": 150000}
+ },
+ {
+ ...,
+ "payload_type": "text",
+ ...,
+ },
+ ...
+ ]
+}
+---
+I already have this Rust module ./src/msghandler.rs containing the following functions for the webapp to use:
+- smartpack() to encode the above message envelop into json string.
+- smartunpack() to decode json string back to message envelop.
+- the msghandler.rs walkthrough is at /home/ton/docker-apps/sommpanion/msghandler/docs/walkthrough.md
+MQTT will be used as communication channel between the webapp and the backend. MQTT broker is "mqtt.mydomain.com". I didn't run the broker yet.
+I already setup the project structure. Can you implement the app?
+To test whether this Dioxus project can be build, you may use this command "dx bundle --web --release --debug-symbols=false"
+
+P.S. In a Dioxus single-page application (SPA), switching screens can be handled perfectly using standard Rust state matching (often called conditional rendering or state-based routing).
+
+
+
+
+read the following files:
+./docs/requirements.md
+./docs/solution-design.md
+./docs/specification.md
+./docs/walkthrough.md
+What is the main interface of this package?
+
+
+
+
+
+
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diff --git a/Cargo.lock b/Cargo.lock
index b38e325..cf988d4 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -906,6 +906,7 @@ dependencies = [
"base64",
"bytes",
"encoding_rs",
+ "futures-channel",
"futures-core",
"futures-util",
"h2",
diff --git a/Cargo.toml b/Cargo.toml
index cd5e45a..580abd6 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -2,7 +2,7 @@
name = "msghandler"
version = "1.2.0"
edition = "2021"
-description = "Cross-platform bi-directional data bridge for NATS communication"
+description = "Cross-platform bi-directional data bridge"
[lib]
name = "msghandler"
@@ -12,7 +12,7 @@ path = "src/msghandler.rs"
serde = { version = "1", features = ["derive"] }
serde_json = "1"
tokio = { version = "1", features = ["full"] }
-reqwest = { version = "0.12", features = ["json", "stream", "multipart"] }
+reqwest = { version = "0.12", features = ["json", "stream", "multipart", "blocking"] }
uuid = { version = "1", features = ["v4", "serde"] }
base64 = "0.22"
chrono = { version = "0.4", features = ["serde"] }
@@ -23,9 +23,9 @@ futures = "0.3"
tempfile = "3"
[[example]]
-name = "smartsend_example"
-path = "examples/smartsend_example.rs"
+name = "smartpack_example"
+path = "examples/smartpack_example.rs"
[[example]]
-name = "smartreceive_example"
-path = "examples/smartreceive_example.rs"
+name = "smartunpack_example"
+path = "examples/smartunpack_example.rs"
diff --git a/Manifest.toml b/Manifest.toml
index ef1fb5d..8c2bcfa 100644
--- a/Manifest.toml
+++ b/Manifest.toml
@@ -1,8 +1,8 @@
# This file is machine-generated - editing it directly is not advised
-julia_version = "1.12.5"
+julia_version = "1.12.6"
manifest_format = "2.0"
-project_hash = "b632f853bcf5355f5c53ad3efa7a19f70444dc6c"
+project_hash = "6757ef801c2fba25b1829ffc7ce99f19563e7dc4"
[[deps.AliasTables]]
deps = ["PtrArrays", "Random"]
@@ -52,15 +52,15 @@ version = "1.2.2"
[[deps.CSV]]
deps = ["CodecZlib", "Dates", "FilePathsBase", "InlineStrings", "Mmap", "Parsers", "PooledArrays", "PrecompileTools", "SentinelArrays", "Tables", "Unicode", "WeakRefStrings", "WorkerUtilities"]
-git-tree-sha1 = "deddd8725e5e1cc49ee205a1964256043720a6c3"
+git-tree-sha1 = "8d8e0b0f350b8e1c91420b5e64e5de774c2f0f4d"
uuid = "336ed68f-0bac-5ca0-87d4-7b16caf5d00b"
-version = "0.10.15"
+version = "0.10.16"
[[deps.CodeTracking]]
-deps = ["InteractiveUtils", "UUIDs"]
-git-tree-sha1 = "b7231a755812695b8046e8471ddc34c8268cbad5"
+deps = ["InteractiveUtils", "REPL", "UUIDs"]
+git-tree-sha1 = "cfb7a2e89e245a9d5016b70323db412b3a7438d5"
uuid = "da1fd8a2-8d9e-5ec2-8556-3022fb5608a2"
-version = "3.0.0"
+version = "3.0.2"
[[deps.CodecBase]]
deps = ["TranscodingStreams"]
@@ -108,9 +108,9 @@ version = "1.3.0+1"
[[deps.ConcurrentUtilities]]
deps = ["Serialization", "Sockets"]
-git-tree-sha1 = "d9d26935a0bcffc87d2613ce14c527c99fc543fd"
+git-tree-sha1 = "21d088c496ea22914fe80906eb5bce65755e5ec8"
uuid = "f0e56b4a-5159-44fe-b623-3e5288b988bb"
-version = "2.5.0"
+version = "2.5.1"
[[deps.Crayons]]
git-tree-sha1 = "249fe38abf76d48563e2f4556bebd215aa317e15"
@@ -124,15 +124,15 @@ version = "1.16.0"
[[deps.DataFrames]]
deps = ["Compat", "DataAPI", "DataStructures", "Future", "InlineStrings", "InvertedIndices", "IteratorInterfaceExtensions", "LinearAlgebra", "Markdown", "Missings", "PooledArrays", "PrecompileTools", "PrettyTables", "Printf", "Random", "Reexport", "SentinelArrays", "SortingAlgorithms", "Statistics", "TableTraits", "Tables", "Unicode"]
-git-tree-sha1 = "d8928e9169ff76c6281f39a659f9bca3a573f24c"
+git-tree-sha1 = "5fab31e2e01e70ad66e3e24c968c264d1cf166d6"
uuid = "a93c6f00-e57d-5684-b7b6-d8193f3e46c0"
-version = "1.8.1"
+version = "1.8.2"
[[deps.DataStructures]]
deps = ["OrderedCollections"]
-git-tree-sha1 = "e357641bb3e0638d353c4b29ea0e40ea644066a6"
+git-tree-sha1 = "e86f4a2805f7f19bec5129bc9150c38208e5dc23"
uuid = "864edb3b-99cc-5e75-8d2d-829cb0a9cfe8"
-version = "0.19.3"
+version = "0.19.4"
[[deps.DataValueInterfaces]]
git-tree-sha1 = "bfc1187b79289637fa0ef6d4436ebdfe6905cbd6"
@@ -146,9 +146,9 @@ version = "1.11.0"
[[deps.Distributions]]
deps = ["AliasTables", "FillArrays", "LinearAlgebra", "PDMats", "Printf", "QuadGK", "Random", "SpecialFunctions", "Statistics", "StatsAPI", "StatsBase", "StatsFuns"]
-git-tree-sha1 = "fbcc7610f6d8348428f722ecbe0e6cfe22e672c6"
+git-tree-sha1 = "e421c1938fafab0165b04dc1a9dbe2a26272952c"
uuid = "31c24e10-a181-5473-b8eb-7969acd0382f"
-version = "0.25.123"
+version = "0.25.125"
[deps.Distributions.extensions]
DistributionsChainRulesCoreExt = "ChainRulesCore"
@@ -171,9 +171,9 @@ uuid = "f43a241f-c20a-4ad4-852c-f6b1247861c6"
version = "1.7.0"
[[deps.EnumX]]
-git-tree-sha1 = "7bebc8aad6ee6217c78c5ddcf7ed289d65d0263e"
+git-tree-sha1 = "c49898e8438c828577f04b92fc9368c388ac783c"
uuid = "4e289a0a-7415-4d19-859d-a7e5c4648b56"
-version = "1.0.6"
+version = "1.0.7"
[[deps.ExceptionUnwrapping]]
deps = ["Test"]
@@ -234,9 +234,9 @@ version = "0.3.1"
[[deps.HTTP]]
deps = ["Base64", "CodecZlib", "ConcurrentUtilities", "Dates", "ExceptionUnwrapping", "Logging", "LoggingExtras", "MbedTLS", "NetworkOptions", "OpenSSL", "PrecompileTools", "Random", "SimpleBufferStream", "Sockets", "URIs", "UUIDs"]
-git-tree-sha1 = "5e6fe50ae7f23d171f44e311c2960294aaa0beb5"
+git-tree-sha1 = "51059d23c8bb67911a2e6fd5130229113735fc7e"
uuid = "cd3eb016-35fb-5094-929b-558a96fad6f3"
-version = "1.10.19"
+version = "1.11.0"
[[deps.HashArrayMappedTries]]
git-tree-sha1 = "2eaa69a7cab70a52b9687c8bf950a5a93ec895ae"
@@ -281,15 +281,15 @@ version = "1.0.0"
[[deps.JLLWrappers]]
deps = ["Artifacts", "Preferences"]
-git-tree-sha1 = "0533e564aae234aff59ab625543145446d8b6ec2"
+git-tree-sha1 = "7204148362dafe5fe6a273f855b8ccbe4df8173e"
uuid = "692b3bcd-3c85-4b1f-b108-f13ce0eb3210"
-version = "1.7.1"
+version = "1.8.0"
[[deps.JSON]]
deps = ["Dates", "Logging", "Parsers", "PrecompileTools", "StructUtils", "UUIDs", "Unicode"]
-git-tree-sha1 = "b3ad4a0255688dcb895a52fafbaae3023b588a90"
+git-tree-sha1 = "f76f7560267b840e492180f9899b472f30b88450"
uuid = "682c06a0-de6a-54ab-a142-c8b1cf79cde6"
-version = "1.4.0"
+version = "1.6.0"
weakdeps = ["ArrowTypes"]
[deps.JSON.extensions]
@@ -307,9 +307,9 @@ weakdeps = ["ArrowTypes"]
[[deps.JuliaInterpreter]]
deps = ["CodeTracking", "InteractiveUtils", "Random", "UUIDs"]
-git-tree-sha1 = "80580012d4ed5a3e8b18c7cd86cebe4b816d17a6"
+git-tree-sha1 = "58927c485919bf17ea308d9d82156de1adf4b006"
uuid = "aa1ae85d-cabe-5617-a682-6adf51b2e16a"
-version = "0.10.9"
+version = "0.10.12"
[[deps.JuliaSyntaxHighlighting]]
deps = ["StyledStrings"]
@@ -383,9 +383,9 @@ version = "1.2.0"
[[deps.LoweredCodeUtils]]
deps = ["CodeTracking", "Compiler", "JuliaInterpreter"]
-git-tree-sha1 = "65ae3db6ab0e5b1b5f217043c558d9d1d33cc88d"
+git-tree-sha1 = "5d4278f755440f70648d80cc6225f51e78e94094"
uuid = "6f1432cf-f94c-5a45-995e-cdbf5db27b0b"
-version = "3.5.0"
+version = "3.5.1"
[[deps.Lz4_jll]]
deps = ["Artifacts", "JLLWrappers", "Libdl"]
@@ -400,9 +400,9 @@ version = "1.11.0"
[[deps.MbedTLS]]
deps = ["Dates", "MbedTLS_jll", "MozillaCACerts_jll", "NetworkOptions", "Random", "Sockets"]
-git-tree-sha1 = "c067a280ddc25f196b5e7df3877c6b226d390aaf"
+git-tree-sha1 = "8785729fa736197687541f7053f6d8ab7fc44f92"
uuid = "739be429-bea8-5141-9913-cc70e7f3736d"
-version = "1.1.9"
+version = "1.1.10"
[[deps.MbedTLS_jll]]
deps = ["Artifacts", "JLLWrappers", "Libdl"]
@@ -432,15 +432,9 @@ version = "2025.11.4"
[[deps.NATS]]
deps = ["Base64", "BufferedStreams", "CodecBase", "Dates", "DocStringExtensions", "JSON3", "MbedTLS", "NanoDates", "Random", "ScopedValues", "Sockets", "Sodium", "StructTypes", "URIs"]
-git-tree-sha1 = "d9d9a189fb9155a460e6b5e8966bf6a66737abf8"
+git-tree-sha1 = "a1cdf34ba90ee5cd2658e487d3277ffafee712ce"
uuid = "55e73f9c-eeeb-467f-b4cc-a633fde63d2a"
-version = "0.1.0"
-
-[[deps.msghandler]]
-deps = ["Arrow", "DataFrames", "Dates", "GeneralUtils", "HTTP", "JSON", "NATS", "PrettyPrinting", "Revise", "UUIDs"]
-path = "."
-uuid = "f2724d33-f338-4a57-b9f8-1be882570d10"
-version = "0.4.1"
+version = "0.1.1"
[[deps.NanoDates]]
deps = ["Dates", "Parsers"]
@@ -496,9 +490,9 @@ weakdeps = ["StatsBase"]
[[deps.Parsers]]
deps = ["Dates", "PrecompileTools", "UUIDs"]
-git-tree-sha1 = "7d2f8f21da5db6a806faf7b9b292296da42b2810"
+git-tree-sha1 = "5d5e0a78e971354b1c7bff0655d11fdc1b0e12c8"
uuid = "69de0a69-1ddd-5017-9359-2bf0b02dc9f0"
-version = "2.8.3"
+version = "2.8.4"
[[deps.PooledArrays]]
deps = ["DataAPI", "Future"]
@@ -508,15 +502,15 @@ version = "1.4.3"
[[deps.PrecompileTools]]
deps = ["Preferences"]
-git-tree-sha1 = "07a921781cab75691315adc645096ed5e370cb77"
+git-tree-sha1 = "edbeefc7a4889f528644251bdb5fc9ab5348bc2c"
uuid = "aea7be01-6a6a-4083-8856-8a6e6704d82a"
-version = "1.3.3"
+version = "1.3.4"
[[deps.Preferences]]
deps = ["TOML"]
-git-tree-sha1 = "522f093a29b31a93e34eaea17ba055d850edea28"
+git-tree-sha1 = "8b770b60760d4451834fe79dd483e318eee709c4"
uuid = "21216c6a-2e73-6563-6e65-726566657250"
-version = "1.5.1"
+version = "1.5.2"
[[deps.PrettyPrinting]]
git-tree-sha1 = "142ee93724a9c5d04d78df7006670a93ed1b244e"
@@ -525,9 +519,15 @@ version = "0.4.2"
[[deps.PrettyTables]]
deps = ["Crayons", "LaTeXStrings", "Markdown", "PrecompileTools", "Printf", "REPL", "Reexport", "StringManipulation", "Tables"]
-git-tree-sha1 = "c5a07210bd060d6a8491b0ccdee2fa0235fc00bf"
+git-tree-sha1 = "624de6279ab7d94fc9f672f0068107eb6619732c"
uuid = "08abe8d2-0d0c-5749-adfa-8a2ac140af0d"
-version = "3.1.2"
+version = "3.3.2"
+
+ [deps.PrettyTables.extensions]
+ PrettyTablesTypstryExt = "Typstry"
+
+ [deps.PrettyTables.weakdeps]
+ Typstry = "f0ed7684-a786-439e-b1e3-3b82803b501e"
[[deps.Printf]]
deps = ["Unicode"]
@@ -535,15 +535,15 @@ uuid = "de0858da-6303-5e67-8744-51eddeeeb8d7"
version = "1.11.0"
[[deps.PtrArrays]]
-git-tree-sha1 = "1d36ef11a9aaf1e8b74dacc6a731dd1de8fd493d"
+git-tree-sha1 = "4fbbafbc6251b883f4d2705356f3641f3652a7fe"
uuid = "43287f4e-b6f4-7ad1-bb20-aadabca52c3d"
-version = "1.3.0"
+version = "1.4.0"
[[deps.QuadGK]]
deps = ["DataStructures", "LinearAlgebra"]
-git-tree-sha1 = "9da16da70037ba9d701192e27befedefb91ec284"
+git-tree-sha1 = "5e8e8b0ab68215d7a2b14b9921a946fee794749e"
uuid = "1fd47b50-473d-5c70-9696-f719f8f3bcdc"
-version = "2.11.2"
+version = "2.11.3"
[deps.QuadGK.extensions]
QuadGKEnzymeExt = "Enzyme"
@@ -568,9 +568,9 @@ version = "1.2.2"
[[deps.Revise]]
deps = ["CodeTracking", "FileWatching", "InteractiveUtils", "JuliaInterpreter", "LibGit2", "LoweredCodeUtils", "OrderedCollections", "Preferences", "REPL", "UUIDs"]
-git-tree-sha1 = "14d1bfb0a30317edc77e11094607ace3c800f193"
+git-tree-sha1 = "d9383b639663d8220ac9c523927e38bc21cad16a"
uuid = "295af30f-e4ad-537b-8983-00126c2a3abe"
-version = "3.13.2"
+version = "3.14.3"
[deps.Revise.extensions]
DistributedExt = "Distributed"
@@ -596,9 +596,9 @@ version = "0.7.0"
[[deps.ScopedValues]]
deps = ["HashArrayMappedTries", "Logging"]
-git-tree-sha1 = "c3b2323466378a2ba15bea4b2f73b081e022f473"
+git-tree-sha1 = "67a144433c4ce877ee6d1ada69a124d6b1ecf7be"
uuid = "7e506255-f358-4e82-b7e4-beb19740aa63"
-version = "1.5.0"
+version = "1.6.2"
[[deps.Scratch]]
deps = ["Dates"]
@@ -608,9 +608,9 @@ version = "1.3.0"
[[deps.SentinelArrays]]
deps = ["Dates", "Random"]
-git-tree-sha1 = "ebe7e59b37c400f694f52b58c93d26201387da70"
+git-tree-sha1 = "084c47c7c5ce5cfecefa0a98dff69eb3646b5a80"
uuid = "91c51154-3ec4-41a3-a24f-3f23e20d615c"
-version = "1.4.9"
+version = "1.4.10"
[[deps.Serialization]]
uuid = "9e88b42a-f829-5b0c-bbe9-9e923198166b"
@@ -644,9 +644,9 @@ version = "1.12.0"
[[deps.SpecialFunctions]]
deps = ["IrrationalConstants", "LogExpFunctions", "OpenLibm_jll", "OpenSpecFun_jll"]
-git-tree-sha1 = "f2685b435df2613e25fc10ad8c26dddb8640f547"
+git-tree-sha1 = "2700b235561b0335d5bef7097a111dc513b8655e"
uuid = "276daf66-3868-5448-9aa4-cd146d93841b"
-version = "2.6.1"
+version = "2.7.2"
[deps.SpecialFunctions.extensions]
SpecialFunctionsChainRulesCoreExt = "ChainRulesCore"
@@ -692,9 +692,9 @@ version = "1.5.2"
[[deps.StringManipulation]]
deps = ["PrecompileTools"]
-git-tree-sha1 = "a3c1536470bf8c5e02096ad4853606d7c8f62721"
+git-tree-sha1 = "d05693d339e37d6ab134c5ab53c29fce5ee5d7d5"
uuid = "892a3eda-7b42-436c-8928-eab12a02cf0e"
-version = "0.4.2"
+version = "0.4.4"
[[deps.StringViews]]
git-tree-sha1 = "f2dcb92855b31ad92fe8f079d4f75ac57c93e4b8"
@@ -709,16 +709,18 @@ version = "1.11.0"
[[deps.StructUtils]]
deps = ["Dates", "UUIDs"]
-git-tree-sha1 = "9297459be9e338e546f5c4bedb59b3b5674da7f1"
+git-tree-sha1 = "82bee338d650aa515f31866c460cb7e3bcef90b8"
uuid = "ec057cc2-7a8d-4b58-b3b3-92acb9f63b42"
-version = "2.6.2"
+version = "2.8.2"
[deps.StructUtils.extensions]
StructUtilsMeasurementsExt = ["Measurements"]
+ StructUtilsStaticArraysCoreExt = ["StaticArraysCore"]
StructUtilsTablesExt = ["Tables"]
[deps.StructUtils.weakdeps]
Measurements = "eff96d63-e80a-5855-80a2-b1b0885c5ab7"
+ StaticArraysCore = "1e83bf80-4336-4d27-bf5d-d5a4f845583c"
Tables = "bd369af6-aec1-5ad0-b16a-f7cc5008161c"
[[deps.StyledStrings]]
@@ -795,9 +797,9 @@ version = "1.11.0"
[[deps.WeakRefStrings]]
deps = ["DataAPI", "InlineStrings", "Parsers"]
-git-tree-sha1 = "b1be2855ed9ed8eac54e5caff2afcdb442d52c23"
+git-tree-sha1 = "0716e01c3b40413de5dedbc9c5c69f27cddfddfc"
uuid = "ea10d353-3f73-51f8-a26c-33c1cb351aa5"
-version = "1.4.2"
+version = "1.4.3"
[[deps.WorkerUtilities]]
git-tree-sha1 = "cd1659ba0d57b71a464a29e64dbc67cfe83d54e7"
@@ -826,6 +828,12 @@ git-tree-sha1 = "011b0a7331b41c25524b64dc42afc9683ee89026"
uuid = "a9144af2-ca23-56d9-984f-0d03f7b5ccf8"
version = "1.0.21+0"
+[[deps.msghandler]]
+deps = ["Arrow", "Base64", "DataFrames", "Dates", "HTTP", "JSON", "NATS", "PrettyPrinting", "Revise", "UUIDs"]
+path = "."
+uuid = "f2724d33-f338-4a57-b9f8-1be882570d10"
+version = "0.5.6"
+
[[deps.nghttp2_jll]]
deps = ["Artifacts", "Libdl"]
uuid = "8e850ede-7688-5339-a07c-302acd2aaf8d"
diff --git a/Project.toml b/Project.toml
index 364e5da..404b62a 100644
--- a/Project.toml
+++ b/Project.toml
@@ -18,4 +18,6 @@ UUIDs = "cf7118a7-6976-5b1a-9a39-7adc72f591a4"
[compat]
Base64 = "1.11.0"
+Dates = "1.11.0"
+GeneralUtils = "0.3.1"
JSON = "1.4.0"
diff --git a/README.md b/README.md
index fc6825b..6590d76 100644
--- a/README.md
+++ b/README.md
@@ -110,7 +110,7 @@ msghandler enables seamless communication across multiple platforms through NATS
using msghandler
data = [("message", "Hello World", "text")]
-env, env_json_str = smartsend("/chat/room1", data; broker_url="nats://localhost:4222")
+env, env_json_str = smartpack("/chat/room1", data; broker_url="nats://localhost:4222")
println("Message sent!")
```
@@ -120,7 +120,7 @@ println("Message sent!")
import msghandler from './src/msghandler_ssr.js';
const data = [["message", "Hello World", "text"]];
-const [env, env_json_str] = await msghandler.smartsend(
+const [env, env_json_str] = await msghandler.smartpack(
"/chat/room1",
data,
{ broker_url: "nats://localhost:4222" }
@@ -134,7 +134,7 @@ console.log("Message sent!");
import msghandler from './src/msghandler_csr.js';
const data = [["message", "Hello World", "text"]];
-const [env, env_json_str] = await msghandler.smartsend(
+const [env, env_json_str] = await msghandler.smartpack(
"/chat/room1",
data,
{ broker_url: "ws://localhost:4222" }
@@ -145,10 +145,10 @@ console.log("Message sent!");
#### Python
```python
-from msghandler import smartsend
+from msghandler import smartpack
data = [("message", "Hello World", "text")]
-env, env_json_str = await smartsend(
+env, env_json_str = await smartpack(
"/chat/room1",
data,
broker_url="nats://localhost:4222"
@@ -159,10 +159,10 @@ print("Message sent!")
#### MicroPython
```python
-from msghandler import smartsend
+from msghandler import smartpack
data = [("message", "Hello World", "text")]
-env, env_json_str = smartsend(
+env, env_json_str = smartpack(
"/chat/room1",
data,
broker_url="nats://localhost:4222",
@@ -179,12 +179,12 @@ print("Message sent!")
All platforms use the same input/output format for payloads:
-**Input format for `smartsend`:**
+**Input format for `smartpack`:**
```
[(dataname1, data1, type1), (dataname2, data2, type2), ...]
```
-**Output format for `smartreceive`:**
+**Output format for `smartunpack`:**
```json
{
"correlation_id": "...",
@@ -204,7 +204,7 @@ All platforms use the same input/output format for payloads:
}
```
-### smartsend
+### smartpack
Sends data either directly via NATS or via a fileserver URL, depending on payload size.
@@ -213,7 +213,7 @@ Sends data either directly via NATS or via a fileserver URL, depending on payloa
```julia
using msghandler
-env, env_json_str = msghandler.smartsend(
+env, env_json_str = msghandler.smartpack(
subject::String,
data::AbstractArray{Tuple{String, Any, String}};
broker_url::String = "nats://localhost:4222",
@@ -240,7 +240,7 @@ env, env_json_str = msghandler.smartsend(
```javascript
import msghandler from './src/msghandler_ssr.js';
-const [env, env_json_str] = await msghandler.smartsend(
+const [env, env_json_str] = await msghandler.smartpack(
subject,
data, // Array of [dataname, data, type] tuples
{
@@ -269,7 +269,7 @@ const [env, env_json_str] = await msghandler.smartsend(
```javascript
import msghandler from './src/msghandler_csr.js';
-const [env, env_json_str] = await msghandler.smartsend(
+const [env, env_json_str] = await msghandler.smartpack(
subject,
data,
{
@@ -298,7 +298,7 @@ const [env, env_json_str] = await msghandler.smartsend(
```python
from msghandler import msghandler
-env, env_json_str = await msghandler.smartsend(
+env, env_json_str = await msghandler.smartpack(
subject: str,
data: List[Tuple[str, Any, str]],
broker_url: str = "nats://localhost:4222",
@@ -326,7 +326,7 @@ env, env_json_str = await msghandler.smartsend(
from msghandler import msghandler
# Limited to direct transport (< 100KB threshold)
-env, env_json_str = msghandler.smartsend(
+env, env_json_str = msghandler.smartpack(
subject,
data, # List of (dataname, data, type) tuples
broker_url="nats://localhost:4222",
@@ -335,7 +335,7 @@ env, env_json_str = msghandler.smartsend(
# Returns: Tuple[Dict, str]
```
-### smartreceive
+### smartunpack
Receives and processes messages from NATS, handling both direct and link transport.
@@ -344,7 +344,7 @@ Receives and processes messages from NATS, handling both direct and link transpo
```julia
using msghandler
-env = msghandler.smartreceive(
+env = msghandler.smartunpack(
msg::NATS.Msg;
fileserver_download_handler::Function = _fetch_with_backoff,
max_retries::Int = 5,
@@ -359,7 +359,7 @@ env = msghandler.smartreceive(
```javascript
import msghandler from './src/msghandler_ssr.js';
-const env = await msghandler.smartreceive(
+const env = await msghandler.smartunpack(
msg,
{
fileserver_download_handler: msghandler.fetchWithBackoff,
@@ -376,7 +376,7 @@ const env = await msghandler.smartreceive(
```javascript
import msghandler from './src/msghandler_csr.js';
-const env = await msghandler.smartreceive(
+const env = await msghandler.smartunpack(
msg,
{
fileserver_download_handler: msghandler.fetchWithBackoff,
@@ -393,7 +393,7 @@ const env = await msghandler.smartreceive(
```python
from msghandler import msghandler
-env = await msghandler.smartreceive(
+env = await msghandler.smartunpack(
msg,
fileserver_download_handler=fetch_with_backoff,
max_retries=5,
@@ -408,7 +408,7 @@ env = await msghandler.smartreceive(
```python
from msghandler import msghandler
-env = msghandler.smartreceive(
+env = msghandler.smartunpack(
msg,
fileserver_download_handler=_sync_fileserver_download,
max_retries=3,
@@ -452,7 +452,7 @@ data = [
("large_document", large_file_data, "binary")
]
-env, env_json_str = smartsend("/chat/room1", data; fileserver_url="http://localhost:8080")
+env, env_json_str = smartpack("/chat/room1", data; fileserver_url="http://localhost:8080")
```
#### JavaScript (Node.js)
@@ -466,7 +466,7 @@ const data = [
["large_document", largeFileData, "binary"]
];
-const [env, env_json_str] = await msghandler.smartsend(
+const [env, env_json_str] = await msghandler.smartpack(
"/chat/room1",
data,
{ fileserver_url: 'http://localhost:8080' }
@@ -484,7 +484,7 @@ const data = [
["large_document", largeFileData, "binary"]
];
-const [env, env_json_str] = await msghandler.smartsend(
+const [env, env_json_str] = await msghandler.smartpack(
"/chat/room1",
data,
{ broker_url: 'ws://localhost:4222', fileserver_url: 'http://localhost:8080' }
@@ -502,7 +502,7 @@ data = [
("large_document", large_file_data, "binary")
]
-env, env_json_str = await msghandler.smartsend(
+env, env_json_str = await msghandler.smartpack(
"/chat/room1",
data,
fileserver_url="http://localhost:8080"
@@ -525,7 +525,7 @@ config = Dict(
)
data = [("config", config, "dictionary")]
-env, env_json_str = smartsend("/device/config", data)
+env, env_json_str = smartpack("/device/config", data)
```
#### JavaScript (Node.js)
@@ -539,7 +539,7 @@ const config = {
update_interval: 60
};
-const [env, env_json_str] = await msghandler.smartsend(
+const [env, env_json_str] = await msghandler.smartpack(
"/device/config",
[["config", config, "dictionary"]]
);
@@ -557,7 +557,7 @@ config = {
}
data = [("config", config, "dictionary")]
-env, env_json_str = await msghandler.smartsend("/device/config", data)
+env, env_json_str = await msghandler.smartpack("/device/config", data)
```
### Example 3: Table Data (Arrow IPC)
@@ -577,7 +577,7 @@ df = DataFrame(
)
data = [("students", df, "arrowtable")]
-env, env_json_str = smartsend("/data/analysis", data)
+env, env_json_str = smartpack("/data/analysis", data)
```
#### JavaScript (Node.js)
@@ -591,7 +591,7 @@ const df = [
{ id: 3, name: "Charlie", score: 92 }
];
-const [env, env_json_str] = await msghandler.smartsend(
+const [env, env_json_str] = await msghandler.smartpack(
"/data/analysis",
[["students", df, "arrowtable"]]
);
@@ -610,7 +610,7 @@ df = pd.DataFrame({
})
data = [("students", df, "arrowtable")]
-env, env_json_str = await msghandler.smartsend("/data/analysis", data)
+env, env_json_str = await msghandler.smartpack("/data/analysis", data)
```
#### JavaScript (Browser)
@@ -626,7 +626,7 @@ const df = [
{ id: 3, name: "Charlie", score: 92 }
];
-const [env, env_json_str] = await msghandler.smartsend(
+const [env, env_json_str] = await msghandler.smartpack(
"/data/analysis",
[["students", df, "jsontable"]], // Use jsontable for browser
{ broker_url: 'ws://localhost:4222' }
@@ -643,7 +643,7 @@ Bi-directional communication with reply-to support.
using msghandler
# Requester
-env, env_json_str = smartsend(
+env, env_json_str = smartpack(
"/device/command",
[("command", Dict("action" => "read_sensor"), "dictionary")];
broker_url="nats://localhost:4222",
@@ -652,9 +652,9 @@ env, env_json_str = smartsend(
# Receiver (in separate application)
msg = NATS.subscription.next()
-env = smartreceive(msg)
+env = smartunpack(msg)
# Process request and send response
-response_env, response_json = smartsend(
+response_env, response_json = smartpack(
"/device/response",
[("result", Dict("value" => 42), "dictionary")],
reply_to="/device/command",
@@ -668,7 +668,7 @@ response_env, response_json = smartsend(
import msghandler from './src/msghandler_ssr.js';
// Requester
-const [env, env_json_str] = await msghandler.smartsend(
+const [env, env_json_str] = await msghandler.smartpack(
"/device/command",
[["command", { action: "read_sensor" }, "dictionary"]],
{ broker_url: 'nats://localhost:4222', reply_to: '/device/response' }
@@ -676,9 +676,9 @@ const [env, env_json_str] = await msghandler.smartsend(
// Receiver (in separate application)
// const msg = await natsConsumer.next();
-// const env = await msghandler.smartreceive(msg);
+// const env = await msghandler.smartunpack(msg);
// Process request and send response
-// const response_env, response_json = await msghandler.smartsend(
+// const response_env, response_json = await msghandler.smartpack(
// "/device/response",
// [["result", { value: 42 }, "dictionary"]],
// { reply_to: '/device/command', reply_to_msg_id: env.msg_id }
@@ -691,7 +691,7 @@ const [env, env_json_str] = await msghandler.smartsend(
from msghandler import msghandler
# Requester
-env, env_json_str = await msghandler.smartsend(
+env, env_json_str = await msghandler.smartpack(
"/device/command",
[("command", {"action": "read_sensor"}, "dictionary")],
broker_url="nats://localhost:4222",
@@ -700,9 +700,9 @@ env, env_json_str = await msghandler.smartsend(
# Receiver (in separate application)
# msg = await nats_consumer.next()
-# env = await msghandler.smartreceive(msg)
+# env = await msghandler.smartunpack(msg)
# Process request and send response
-# response_env, response_json = await msghandler.smartsend(
+# response_env, response_json = await msghandler.smartpack(
# "/device/response",
# [("result", {"value": 42}, "dictionary")],
# reply_to="/device/command",
@@ -895,7 +895,7 @@ node build.js
import msghandlerCSR from './dist/msghandler-csr-bundle.js';
// Use the library
- const [env, envJson] = await msghandlerCSR.smartsend(
+ const [env, envJson] = await msghandlerCSR.smartpack(
"/chat/user/v1/message",
[["msg", "Hello", "text"]],
{ broker_url: "wss://nats.example.com" }
diff --git a/docs/architecture.md b/docs/architecture.md
deleted file mode 100644
index 470c2a6..0000000
--- a/docs/architecture.md
+++ /dev/null
@@ -1,941 +0,0 @@
-# Architecture Documentation: msghandler
-
-**Version**: 1.4.0
-**Date**: 2026-05-14
-**Status**: Active
-**Ground Truth**: [`src/msghandler.jl`](../src/msghandler.jl)
-**Architecture Level**: C4 Container Level
-
----
-
-## 1. Executive Summary
-
-This document defines the **blueprint** for msghandler - the cross-platform bi-directional data bridge that enables seamless communication between **Julia**, **JavaScript**, **Python**, **Dart**, **Rust**, and **MicroPython** applications using NATS as the message bus.
-
-This architecture document serves as the single source of truth for:
-- **System Structure**: How components fit together and interact
-- **Scaling Considerations**: How the system scales horizontally and vertically
-- **Failure Modes**: How the system handles failures and recovers
-- **Trade-off Decisions**: The rationale behind architectural decisions
-
-### 1.1 Specification Traceability
-
-| Architecture Section | Specification Reference | UI Specification Reference | Requirement ID(s) |
-|---------------------|-------------------------|---------------------------|-------------------|
-| Section 2 (Context Diagram) | specification.md:2 | - | FR-001, FR-002, FR-003, FR-004, FR-005, FR-006, FR-007, FR-012, FR-013, FR-014 |
-| Section 3 (Container Diagram) | specification.md:2, specification.md:3, specification.md:11 | - | FR-001, FR-002, FR-003, FR-004, FR-005, FR-006, FR-007, FR-012, FR-013, FR-014 |
-| Section 4 (Component Diagram) | specification.md:2, specification.md:3, specification.md:5, specification.md:11 | - | FR-001, FR-002, FR-003, FR-004, FR-005, FR-006, FR-007, FR-012, FR-013, FR-014 |
-| Section 5 (High-Level) | specification.md:2, specification.md:3, specification.md:5, specification.md:11 | - | FR-001, FR-002, FR-003, FR-004, FR-005, FR-006, FR-007, FR-012, FR-013, FR-014 |
-| Section 6 (Message Envelope) | specification.md:2, specification.md:3, specification.md:8 | - | FR-011, FR-012, FR-013, FR-014, NFR-401, NFR-403 |
-| Section 7 (Payload Type) | specification.md:3, specification.md:5, specification.md:6 | - | FR-001, FR-002, FR-003, FR-006, FR-012, NFR-101, NFR-102 |
-| Section 8 (Transport Strategy) | specification.md:6, specification.md:7 | - | FR-003, FR-004, FR-005, FR-010, NFR-104, NFR-105, NFR-106 |
-| Section 9 (Platform-Specific) | specification.md:13, specification.md:14 | - | FR-001, FR-002, FR-003, FR-004, FR-005, FR-006, FR-007, FR-012, FR-013, FR-014 |
-| Section 10 (Scaling) | specification.md:7, specification.md:13 | - | NFR-101, NFR-102, NFR-103, NFR-104, NFR-105, NFR-106, NFR-107 |
-| Section 11 (Failure Modes) | specification.md:9, specification.md:11 | - | FR-008, FR-009, FR-010, FR-011, NFR-201, NFR-202, NFR-203 |
-| Section 12 (Trade-offs) | specification.md:2, specification.md:3, specification.md:6, specification.md:7 | - | FR-001, FR-002, FR-003, FR-004, FR-005, FR-006, FR-007, FR-008, FR-009, FR-010, FR-011, FR-012, FR-013, FR-014 |
-| Section 13 (Deployment) | specification.md:12, specification.md:18 | - | FR-013, FR-014, NFR-201, NFR-203 |
-| Section 14 (Security) | specification.md:4, specification.md:9, specification.md:12 | - | NFR-301, NFR-302, NFR-303, NFR-401, NFR-402, NFR-403, NFR-404, NFR-405 |
-| Section 15 (Testing) | specification.md:17 | - | FR-001, FR-002, FR-003, FR-004, FR-005, FR-006, FR-007, FR-012, FR-013, FR-014 |
-
----
-
-## 2. Architecture Overview
-
-## Architecture Overview
-
-### C4 Context Diagram
-
-```mermaid
-flowchart TD
- subgraph "External Systems"
- NATS_Server[NATS Server]
- File_Server[HTTP File Server
Plik/AWS S3/Custom]
- end
-
- subgraph "Client Applications"
- Julia_App[Julia Application]
- JS_App[JavaScript Application
Node.js/Browser]
- Python_App[Python Application
Desktop]
- Dart_App[Dart Application
Desktop/Flutter/Web]
- Rust_App[Rust Application
Server/Desktop]
- MicroPython_App[MicroPython Device]
- end
-
- Julia_App -->|NATS| NATS_Server
- JS_App -->|NATS| NATS_Server
- Python_App -->|NATS| NATS_Server
- Dart_App -->|NATS| NATS_Server
- Rust_App -->|NATS| NATS_Server
- MicroPython_App -->|NATS| NATS_Server
-
- Julia_App -->|HTTP| File_Server
- JS_App -->|HTTP| File_Server
- Python_App -->|HTTP| File_Server
- Dart_App -->|HTTP| File_Server
- Rust_App -->|HTTP| File_Server
- MicroPython_App -->|HTTP| File_Server
-
- style NATS_Server fill:#fff3e0,stroke:#f57c00
- style File_Server fill:#f3e5f5,stroke:#9c27b4
- style Julia_App fill:#e8f5e9,stroke:#4caf50
- style JS_App fill:#e3f2fd,stroke:#2196f3
- style Python_App fill:#e3f2fd,stroke:#2196f3
- style Dart_App fill:#fff0f6,stroke:#e91e63
- style Rust_App fill:#dea584,stroke:#e65100
- style MicroPython_App fill:#fce4ec,stroke:#e91e63
-```
-
-### C4 Container Diagram
-
-```mermaid
-flowchart TD
- subgraph "Client Container"
- Julia_Module[Julia msghandler Module]
- JS_Module[JavaScript msghandler Module]
- Python_Module[Python msghandler Module]
- Dart_Module[Dart msghandler Module]
- Rust_Module[Rust msghandler Module]
- MicroPython_Module[MicroPython msghandler Module]
- end
-
- Julia_Module --> NATS_Client
- JS_Module --> NATS_Client
- Python_Module --> NATS_Client
- Dart_Module --> NATS_Client
- Rust_Module --> NATS_Client
- MicroPython_Module --> NATS_Client
-
- NATS_Client --> NATS_Broker
-
- Julia_Module --> File_Client
- JS_Module --> File_Client
- Python_Module --> File_Client
- Dart_Module --> File_Client
- Rust_Module --> File_Client
- MicroPython_Module --> File_Client
-
- File_Client --> File_Server
-
- style Julia_Module fill:#e8f5e9,stroke:#4caf50
- style JS_Module fill:#e3f2fd,stroke:#2196f3
- style Python_Module fill:#e3f2fd,stroke:#2196f3
- style Dart_Module fill:#fff0f6,stroke:#e91e63
- style Rust_Module fill:#dea584,stroke:#e65100
- style MicroPython_Module fill:#fce4ec,stroke:#e91e63
- style NATS_Broker fill:#fff3e0,stroke:#f57c00
- style File_Server fill:#f3e5f5,stroke:#9c27b4
-```
-
-### C4 Component Diagram (Julia Implementation)
-
-```mermaid
-flowchart TD
- subgraph "msghandler Module"
- SmartSend[smartsend Function]
- SmartReceive[smartreceive Function]
-
- Serialize[_serialize_data]
- Deserialize[_deserialize_data]
-
- EnvelopeToJson[envelope_to_json]
-
- FileServerUpload[fileserver_upload_handler]
- FileServerDownload[fileserver_download_handler]
-
- LogTrace[log_trace]
- end
-
- subgraph "Data Models"
- Payload[msg_payload_v1 Struct]
- Envelope[msg_envelope_v1 Struct]
- end
-
- SmartSend --> Serialize
- SmartSend --> EnvelopeToJson
- SmartSend --> FileServerUpload
-
- SmartReceive --> Deserialize
- SmartReceive --> FileServerDownload
-
- EnvelopeToJson --> Envelope
- Serialize --> Payload
-
- style SmartSend fill:#d1fae5,stroke:#10b981
- style SmartReceive fill:#d1fae5,stroke:#10b981
- style FileServerUpload fill:#fef3c7,stroke:#f59e0b
- style FileServerDownload fill:#fef3c7,stroke:#f59e0b
-```
-
----
-
-## High-Level Architecture
-
-### System Components
-
-| Component | Purpose | Platform Support |
-|-----------|---------|------------------|
-| **smartsend** | Send data via NATS with automatic transport selection, returns (envelope, json_string) for caller to publish | All |
-| **smartreceive** | Receive and process NATS messages from JSON string | All |
-| **_serialize_data** | Serialize data according to payload type | All |
-| **_deserialize_data** | Deserialize bytes to native data types | All |
-| **envelope_to_json** | Convert msg_envelope_v1 struct to JSON string | All |
-| **log_trace** | Log trace messages with correlation ID | All |
-| **fileserver_upload_handler** | Upload large payloads to HTTP server | Desktop (Julia/JS/Python/Dart/Rust) |
-| **fileserver_download_handler** | Download payloads from HTTP server with exponential backoff | Desktop (Julia/JS/Python/Dart/Rust) |
-| **plik_upload_file** | Upload a local file to Plik server from disk | Rust |
-
-### Data Flow
-
-```mermaid
-flowchart TD
- A[User calls smartsend subject data] --> B[Process each payload]
- B --> C{Calculate serialized size}
- C -->|Size < Threshold| D[Direct Transport]
- C -->|Size >= Threshold| E[Link Transport]
-
- D --> F[Serialize data]
- F --> G[Base64 encode]
- G --> H[Build payload object]
-
- E --> I[Serialize data]
- I --> J[Upload to file server]
- J --> K[Get download URL]
- K --> H
-
- H --> L[Build envelope]
- L --> M[Convert to JSON]
- M --> N[Return envelope + JSON to caller]
-
- style A fill:#f9f9f9,stroke:#333
- style N fill:#e0e7ff,stroke:#3b82f6
- style D fill:#d1fae5,stroke:#10b981
- style E fill:#fef3c7,stroke:#f59e0b
-```
-
----
-
-## Message Envelope Architecture
-
-### msg_envelope_v1 Structure (Julia)
-
-```julia
-struct msg_envelope_v1
- correlation_id::String # UUID v4 for distributed tracing
- msg_id::String # UUID v4 for this message
- timestamp::String # ISO 8601 UTC timestamp
-
- send_to::String # NATS subject to publish to
- msg_purpose::String # ACK, NACK, updateStatus, shutdown, chat
- sender_name::String # Sender application name
- sender_id::String # UUID v4 of sender
- receiver_name::String # Receiver application name (empty = broadcast)
- receiver_id::String # UUID v4 of receiver (empty = broadcast)
-
- reply_to::String # Topic for reply messages
- reply_to_msg_id::String # Message ID being replied to
- broker_url::String # NATS broker URL
-
- metadata::Dict{String, Any} # Message-level metadata
- payloads::Vector{msg_payload_v1} # List of payloads
-end
-```
-
-### msg_payload_v1 Structure (Julia)
-
-```julia
-struct msg_payload_v1
- id::String # UUID v4 for this payload
- dataname::String # Name of the payload
- payload_type::String # text, dictionary, arrowtable, etc.
- transport::String # direct or link
- encoding::String # none, json, base64, arrow-ipc
- size::Integer # Size in bytes
- data::Any # Base64 string or URL
- metadata::Dict{String, Any} # Payload-level metadata
-end
-```
-
-### JSON Schema (Cross-Platform)
-
-```json
-{
- "correlation_id": "string (UUID v4)",
- "msg_id": "string (UUID v4)",
- "timestamp": "string (ISO 8601 UTC)",
- "send_to": "string",
- "msg_purpose": "string",
- "sender_name": "string",
- "sender_id": "string (UUID v4)",
- "receiver_name": "string",
- "receiver_id": "string (UUID v4)",
- "reply_to": "string",
- "reply_to_msg_id": "string",
- "broker_url": "string",
- "metadata": "object",
- "payloads": [
- {
- "id": "string (UUID v4)",
- "dataname": "string",
- "payload_type": "string",
- "transport": "string",
- "encoding": "string",
- "size": "integer",
- "data": "string or URL",
- "metadata": "object"
- }
- ]
-}
-```
-
----
-
-## Payload Type Architecture
-
-### Supported Payload Types
-
-| Type | Description | Serialization | Encoding | Platforms |
-|------|-------------|---------------|----------|-----------|
-| `text` | Plain text string | UTF-8 bytes | Base64 | All |
-| `dictionary` | JSON object | JSON string | Base64/JSON | All |
-| `arrowtable` | Apache Arrow IPC | Arrow IPC stream | Base64/arrow-ipc | Desktop (Julia/Python/Node.js/Dart/Rust) |
-| `jsontable` | JSON array of objects | JSON string | Base64/json | All (including Browser/Dart Web) |
-| `image` | Binary image data | Raw bytes | Base64 | All |
-| `audio` | Binary audio data | Raw bytes | Base64 | All |
-| `video` | Binary video data | Raw bytes | Base64 | All |
-| `binary` | Generic binary data | Raw bytes | Base64 | All |
-
-### Serialization Logic
-
-```mermaid
-flowchart TD
- A[Input data + payload_type] --> B{Payload Type}
-
- B -->|"text"| C[UTF-8 encode]
- B -->|"dictionary"| D[JSON serialize]
- B -->|"arrowtable"| E[Arrow IPC serialize]
- B -->|"jsontable"| F[JSON serialize]
- B -->|"image"| G[Raw bytes]
- B -->|"audio"| H[Raw bytes]
- B -->|"video"| I[Raw bytes]
- B -->|"binary"| J[Raw bytes]
-
- C --> K[Return bytes]
- D --> K
- E --> K
- F --> K
- G --> K
- H --> K
- I --> K
- J --> K
-
- style A fill:#f9f9f9,stroke:#333
- style K fill:#e0e7ff,stroke:#3b82f6
-```
-
----
-
-## Transport Strategy Architecture
-
-### Size Threshold Decision Logic
-
-| Platform | Size Threshold | Notes |
-|----------|----------------|-------|
-| Desktop (Julia/JS/Python/Dart) | 500,000 bytes (0.5MB) | Default threshold |
-| Dart Desktop | 500,000 bytes (0.5MB) | Default threshold |
-| Dart Flutter | 500,000 bytes (0.5MB) | Default threshold |
-| Dart Web | 500,000 bytes (0.5MB) | Default threshold |
-| MicroPython | 100,000 bytes (100KB) | Lower threshold for memory constraints |
-
-### Transport Selection Flow
-
-```mermaid
-flowchart TD
- A[smartsend called] --> B[Serialize payload]
- B --> C[Calculate size]
- C --> D{Size < Threshold?}
-
- D -->|Yes| E[Direct Transport]
- D -->|No| F[Link Transport]
-
- E --> G[Base64 encode]
- G --> H[Build payload with direct transport]
-
- F --> I[Upload to file server]
- I --> J[Get download URL]
- J --> K[Build payload with link transport]
-
- H --> L[Build envelope]
- K --> L
-
- style A fill:#f9f9f9,stroke:#333
- style L fill:#e0e7ff,stroke:#3b82f6
- style E fill:#d1fae5,stroke:#10b981
- style F fill:#fef3c7,stroke:#f59e0b
-```
-
-### Direct Transport Protocol
-
-When `transport = "direct"`, the `data` field contains a Base64-encoded string of the serialized payload.
-
-**Encoding Rules**:
-- `text`: UTF-8 → Base64
-- `dictionary`: JSON → Base64 (or direct JSON)
-- `arrowtable`: Arrow IPC → Base64 (or arrow-ipc)
-- `jsontable`: JSON → Base64 (or direct JSON)
-- `image`/`audio`/`video`/`binary`: Raw bytes → Base64
-
-### Link Transport Protocol
-
-When `transport = "link"`, the `data` field contains a URL pointing to the uploaded payload.
-
-**Upload Flow**:
-1. Serialize payload according to `payload_type`
-2. Upload to HTTP file server (e.g., Plik)
-3. Include returned URL in `data` field
-
-**Download Flow**:
-1. Extract URL from payload
-2. Fetch with exponential backoff (max 5 retries)
-3. Deserialize based on `payload_type`
-
----
-
-## Platform-Specific Architecture
-
-### Julia Architecture
-
-Julia leverages multiple dispatch for type-specific implementations:
-
-- **Multiple Dispatch**: Function overloading based on argument types
-- **Struct-based Data Models**: Explicit type definitions with `struct`
-- **Native Arrow IPC**: Support via `Arrow.jl`
-- **Async/Await**: Tasks for non-blocking I/O
-
-```julia
-# Multiple dispatch for serialization
-function _serialize_data(data::String, payload_type::String)
- # Text serialization
-end
-
-function _serialize_data(data::Dict, payload_type::String)
- # Dictionary serialization
-end
-
-function _serialize_data(data::DataFrame, payload_type::String)
- # Arrow table serialization
-end
-```
-
-### JavaScript Architecture
-
-JavaScript uses async/await for non-blocking I/O:
-
-- **Module-level Utilities**: Serialization functions
-- **Native ArrayBuffer**: Binary data handling (Browser) / Buffer (Node.js)
-- **Fetch API**: HTTP file server communication
-
-#### Node.js Implementation (msghandler_ssr.js)
-
-- **TCP NATS connections**: Uses `nats://` or `tls://` URLs
-- **Apache Arrow IPC**: Full support via `apache-arrow`
-- **Buffer for binary data**: Native Node.js Buffer handling
-
-#### Browser Implementation (msghandler_csr.js)
-
-- **WebSocket NATS connections**: Uses `ws://` or `wss://` URLs via `nats.ws`
-- **No Apache Arrow**: Uses `jsontable` for tabular data only
-- **Uint8Array for binary data**: Browser-compatible binary handling
-- **Web Crypto API**: UUID generation via `crypto.getRandomValues()`
-
-### Python Architecture
-
-Python uses classes for stateful operations:
-
-- **Class-based msghandler**: Encapsulated API
-- **Dataclasses**: Structured data (MsgPayloadV1, MsgEnvelopeV1)
-- **Async/await**: I/O operations
-- **pyarrow**: Arrow IPC support
-
-```python
-class msghandler:
- DEFAULT_SIZE_THRESHOLD = 500_000
-
- def __init__(self, broker_url=None, fileserver_url=None):
- self.broker_url = broker_url or self.DEFAULT_BROKER_URL
- self.fileserver_url = fileserver_url or self.DEFAULT_FILESERVER_URL
-```
-
-### Dart Architecture
-
-Dart uses classes for stateful operations with async/await:
-
-- **Class-based msghandler**: Encapsulated API
-- **Data classes**: Structured data (MsgPayloadV1, MsgEnvelopeV1)
-- **Async/await**: I/O operations
-- **dart-arrow**: Arrow IPC support (Desktop/Flutter only)
-- **HTTP package**: HTTP file server communication
-- **nats package**: NATS client with WebSocket support (Dart Web)
-
-```dart
-class msghandler {
- static const DEFAULT_SIZE_THRESHOLD = 500000;
-
- final String brokerUrl;
- final String fileserverUrl;
-
- msghandler({
- this.brokerUrl = 'nats://localhost:4222',
- this.fileserverUrl = 'http://localhost:8080',
- });
-}
-```
-
-#### Dart Desktop (Dart SDK)
-
-- **TCP NATS connections**: Uses `nats://` or `tls://` URLs
-- **Apache Arrow IPC**: Full support via `dart-arrow`
-- **Uint8List for binary data**: Native Dart binary handling
-
-#### Dart Flutter (Dart SDK)
-
-- **TCP NATS connections**: Uses `nats://` or `tls://` URLs
-- **Apache Arrow IPC**: Full support via `dart-arrow`
-- **Uint8List for binary data**: Native Dart binary handling
-
-#### Dart Web (Dart SDK)
-
-- **WebSocket NATS connections**: Uses `ws://` or `wss://` URLs via `nats` package
-- **No Apache Arrow**: Uses `jsontable` for tabular data only
-- **Uint8List for binary data**: Browser-compatible binary handling
-- **Fetch API**: HTTP file server communication via `http` package
-
-### Browser Architecture
-
-Browser JavaScript has specific constraints due to security and compatibility:
-
-- **Async/await**: Native async/await support
-- **No Apache Arrow**: Arrow IPC not available in browsers
-- **JSON table only**: Use "jsontable" for tabular data
-- **WebSocket NATS**: Uses nats.ws for browser-compatible NATS connections
-- **Fetch API**: HTTP file server communication via fetch
-
-### MicroPython Architecture
-
-MicroPython has significant constraints:
-
-- **Synchronous API**: No async/await
-- **Memory-constrained**: 256KB - 1MB
-- **Limited payload support**: No tables, max 50KB
-- **Simplified UUID generation**: Custom implementation
-
-```python
-# MicroPython constraints
-DEFAULT_SIZE_THRESHOLD = 100_000 # 100KB
-MAX_PAYLOAD_SIZE = 50_000 # 50KB hard limit
-```
-
-### Rust Architecture
-
-Rust leverages compile-time type safety and async runtimes:
-
-- **Type-safe payloads**: Rust enum discriminates between `Text`, `Dictionary`, `ArrowTable`, `Binary`, etc.
-- **serde serialization**: Automatic JSON deserialization via `#[derive(Serialize, Deserialize)]`
-- **tokio runtime**: Efficient async I/O for NATS connections and HTTP file server operations
-- **arrow2 integration**: Native Arrow IPC deserialization without intermediate format conversion
-- **reqwest**: High-performance HTTP client with built-in TLS and connection pooling
-- **Zero-copy patterns**: `Vec` passed directly to avoid unnecessary memory copies
-- **Result**: Idiomatic error handling with typed error types
-
-```rust
-// Type-safe payload enum (compile-time discrimination)
-#[derive(Serialize, Deserialize, Clone)]
-pub enum Payload {
- Text(String),
- Dictionary(serde_json::Value),
- ArrowTable(Vec),
- JsonTable(serde_json::Value),
- Image(Vec),
- Audio(Vec),
- Video(Vec),
- Binary(Vec),
-}
-
-// Configuration via builder pattern
-pub struct SmartsendOptions {
- pub broker_url: String,
- pub fileserver_url: String,
- pub fileserver_upload_handler: Option>,
- pub size_threshold: usize,
- pub correlation_id: String,
- pub msg_purpose: String,
- pub sender_name: String,
- // ... other fields
-}
-
-// NATS client with tokio integration
-let conn = nats::connect("nats://localhost:4222").await?;
-
-// Subscribe and process messages
-let mut sub = conn.subscribe("/agent/wine/api/v1/analyze")?;
-for msg in sub.messages() {
- let envelope = smartreceive(&String::from_utf8_lossy(&msg.payload), &Default::default()).await?;
- // Access deserialized payloads by type
- for payload in &envelope.payloads {
- match payload.payload_type.as_str() {
- "arrowtable" => { /* payload.data is base64-encoded Arrow IPC */ },
- "text" => { /* payload.data is decoded text string */ },
- "binary" | "image" | "audio" | "video" => { /* payload.data is base64-encoded binary */ },
- _ => { /* other types */ }
- }
- }
-}
-```
-
----
-
-## Scaling Architecture
-
-### Horizontal Scaling
-
-| Component | Scaling Strategy |
-|-----------|------------------|
-| **NATS Server** | Cluster deployment with multiple nodes |
-| **File Server** | Load balancer + multiple instances |
-| **Client Applications** | Deploy multiple instances behind load balancer |
-
-### Vertical Scaling
-
-| Component | Scaling Strategy |
-|-----------|------------------|
-| **NATS Server** | Increase memory, CPU, disk I/O |
-| **File Server** | Increase memory, CPU, disk capacity |
-| **Client Applications** | Increase heap size (Python/JS) |
-
-### Performance Considerations
-
-| Metric | Target | Notes |
-|--------|--------|-------|
-| Message serialization overhead | <50ms | For 10KB payload |
-| Message deserialization overhead | <50ms | For 10KB payload |
-| NATS connection establishment | <100ms | Connection pool recommended |
-| File upload latency | <1s | For 0.5MB file |
-| File download latency | <1s | For 0.5MB file |
-
----
-
-## Failure Modes and Recovery
-
-### NATS Connection Failure
-
-**Scenario**: NATS server unavailable
-
-**Handler**:
-- Connection auto-reconnect via TCP-level reconnection
-- Retry with exponential backoff for publish operations
-
-**Recovery**:
-- NATS client automatically attempts reconnection
-- Application can check connection status before publishing
-
-### File Server Unavailable
-
-**Scenario**: HTTP file server unavailable during upload/download
-
-**Handler**:
-- Retry up to 5 times with exponential backoff (100ms → 5000ms)
-- Fallback to direct transport for upload (MicroPython)
-
-**Recovery**:
-- Exponential backoff: `delay = min(delay * 2, max_delay)`
-- After max retries, throw error with correlation ID
-
-### Deserialization Error
-
-**Scenario**: Payload type mismatch or corrupted data
-
-**Handler**:
-- Log correlation ID and throw error
-- No retry (data corruption)
-
-**Recovery**:
-- Application must validate payload_type matches data type
-- Use proper serialization before sending
-
-### Memory Overflow (MicroPython)
-
-**Scenario**: Payload exceeds maximum size (50KB)
-
-**Handler**:
-- Reject payloads >50KB with MemoryError
-- No retry (client-side check)
-
-**Recovery**:
-- Application must split large payloads
-- Use direct transport only for small payloads
-
----
-
-## Trade-off Decisions
-
-### Decision 1: Direct vs Link Transport Threshold
-
-**Trade-off**: Memory vs Network I/O
-
-**Decision**: Use 0.5MB threshold for desktop, 100KB for MicroPython
-
-**Rationale**:
-- Direct transport uses more memory (Base64 encoding adds ~33% overhead)
-- Link transport requires network I/O for upload/download
-- 0.5MB is reasonable for desktop memory constraints
-- 100KB is necessary for MicroPython memory constraints
-
-### Decision 2: Base64 Encoding for Direct Transport
-
-**Trade-off**: Bandwidth vs Simplicity
-
-**Decision**: Use Base64 encoding for all direct transport payloads
-
-**Rationale**:
-- Simplifies JSON serialization (all data is string-compatible)
-- Increases payload size by ~33%, but NATS can handle this
-- Alternative would be binary payload support (more complex)
-
-### Decision 3: Multiple Platform Implementations
-
-**Trade-off**: Development effort vs Cross-platform support
-
-**Decision**: Maintain separate implementations for each platform
-
-**Rationale**:
-- Each platform has idiomatic patterns (multiple dispatch, async/await, etc.)
-- Maintains developer productivity and code quality
-- API parity ensures cross-platform compatibility
-
-### Decision 4: Handler Function Abstraction
-
-**Trade-off**: Flexibility vs Simplicity
-
-**Decision**: Abstract file server operations through handler functions
-
-**Rationale**:
-- Allows support for different file server implementations (Plik, AWS S3, custom)
-- Maintains simplicity for common use cases
-- Enables plug-in architecture for custom backends
-
----
-
-## Deployment Architecture
-
-### Minimum Infrastructure
-
-| Component | Minimum | Notes |
-|-----------|---------|-------|
-| NATS Server | 1 instance | Single node for development |
-| File Server | 1 instance | HTTP server for large payloads |
-| Client Memory | 50MB | Desktop platforms (Julia/JS/Python/Dart) |
-| Client Memory | 256KB | MicroPython devices |
-
-### Environment Variables
-
-| Variable | Default | Description |
-|----------|---------|-------------|
-| `NATS_URL` | `nats://localhost:4222` | NATS server URL |
-| `FILESERVER_URL` | `http://localhost:8080` | HTTP file server URL |
-| `SIZE_THRESHOLD` | `500000` | Size threshold in bytes (0.5MB) |
-
-### Container Deployment
-
-```mermaid
-flowchart TD
- subgraph "Docker Network"
- NATS_Container[NATS Server]
- FileServer_Container[Plik File Server]
- App_Container[Application Container]
- end
-
- App_Container -->|NATS| NATS_Container
- App_Container -->|HTTP| FileServer_Container
-
- style NATS_Container fill:#fff3e0,stroke:#f57c00
- style FileServer_Container fill:#f3e5f5,stroke:#9c27b4
- style App_Container fill:#e3f2fd,stroke:#2196f3
-```
-
----
-
-## Security Considerations
-
-### Payload Integrity
-
-**Mechanism**: SHA-256 checksum via metadata
-
-**Implementation**:
-- Sender calculates checksum and stores in payload metadata
-- Receiver validates checksum on receipt
-
-### Transport Security
-
-**Mechanism**: TLS support for NATS connections
-
-**Implementation**:
-- Use `nats://` URL for plain text
-- Use `tls://` URL for TLS-encrypted connections
-
-### File Server Security
-
-**Mechanism**: Authentication token for file uploads
-
-**Implementation**:
-- Plik uses upload token in `X-UploadToken` header
-- Application can implement custom authentication
-
----
-
-## Testing Architecture
-
-### Unit Test Coverage
-
-| Test Category | Coverage | Files |
-|---------------|----------|-------|
-| Serialization | All payload types | `test/test_*_sender.*` |
-| Deserialization | All payload types | `test/test_*_receiver.*` |
-| Transport selection | Direct vs link | `test/test_*_mix_payloads.*` |
-| File server upload | Plik integration | Platform-specific |
-| File server download | Exponential backoff | Platform-specific |
-
-### Integration Test Scenarios
-
-| Scenario | Platforms | Payloads | Transport | Expected Result |
-|----------|-----------|----------|-----------|-----------------|
-| Cross-platform text | Julia ↔ JS ↔ Python | text | direct | Round-trip successful |
-| Arrow IPC round-trip | Julia ↔ JS ↔ Python | arrowtable | direct | Arrow IPC preserved |
-| Large file transfer | All | image/audio/video | link | File server upload/download |
-| Multi-payload mixed | All | text + image + file | direct/link | All payloads preserved |
-
----
-
-## Versioning
-
-### Architecture Versioning
-
-| Component | Version | Notes |
-|-----------|---------|-------|
-| Architecture | 1.0.0 | Initial release |
-| Protocol | v1 | Message envelope protocol version |
-
-### Backward Compatibility
-
-| Version | Supported Platforms |
-|---------|---------------------|
-| v1.0.x | Julia 1.7+, Node.js 16+, Python 3.8+, Dart 2.17+, Rust 1.70+, MicroPython 1.19+ |
-
----
-
-## Change Log
-
-| Date | Version | Changes |
-|------|---------|---------|
-| 2026-05-14 | 1.4.0 | Updated Rust API to reflect `smartreceive` deserialization changes | All sections |
-| - | - | `smartreceive` now stores deserialized data in `MsgPayloadV1.data` | specification.md:8 |
-| - | - | Added `plik_upload_file` convenience function to component table | specification.md:13 |
-| - | - | Fixed Rust payload access pattern (data is String, not Payload enum) | All sections |
-| - | - | Fixed `SmartsendOptions.fileserver_upload_handler` type to `Arc` | specification.md:13 |
-| - | - | Removed `metadata` from link transport examples (now `None`/omitted) | specification.md:3 |
-| - | - | Removed duplicate footer text | All sections |
-| 2026-05-13 | 1.3.0 | Added Rust support with tokio, serde, and arrow2 | All sections |
-| - | - | Added Rust to C4 diagrams (context, container) | All sections |
-| - | - | Added Rust platform-specific architecture section | specification.md:13 |
-| - | - | Updated component table with Rust support | All sections |
-| 2026-05-13 | 1.2.0 | Aligned with ground truth implementation (src/msghandler.jl) |
-| - | - | Removed publish_message component (commented out in source) |
-| - | - | Removed NATSClient and NATSConnectionPool classes (not in ground truth) |
-| - | - | Updated component diagram to match actual module structure |
-| - | - | Updated data flow to show smartsend returns JSON for caller to publish |
-| - | - | Fixed SIZE_THRESHOLD default to 500,000 bytes |
-| 2026-03-15 | 1.1.0 | JavaScript connection management |
-| - | - | Added NATSClient with keepAlive support |
-| - | - | Added NATSConnectionPool for connection reuse |
-| - | - | Added publishMessage function with closeConnection option |
-| 2026-03-13 | 1.0.0 | Initial architecture documentation |
-
----
-
-## 16. References
-
-### 16.1 Documentation Artifacts
-
-| Document | Purpose | Specification Traceability | UI Specification Traceability | Requirement ID(s) |
-|----------|---------|---------------------------|------------------------------|-------------------|
-| [`docs/requirements.md`](./requirements.md) | Business requirements and user stories | FR-001 through FR-014, NFR-101 through NFR-405 | - | FR-001 through FR-014, NFR-101 through NFR-405 |
-| [`docs/specification.md`](./specification.md) | Technical contract for msghandler | specification.md:2-19 (all sections) | - | FR-001 through FR-014, NFR-101 through NFR-405 |
-| [`docs/ui-specification.md`](./ui-specification.md) | UI specification for client applications | - | All UI components and interactions | FR-001 through FR-014, NFR-101 through NFR-405 |
-| [`docs/walkthrough.md`](./walkthrough.md) | End-to-end system flow | specification.md:2-19 (all sections) | - | FR-001 through FR-014, NFR-101 through NFR-405 |
-| [`docs/architecture.md`](./architecture.md) | System architecture diagrams | specification.md:2-19 (all sections) | - | FR-001 through FR-014, NFR-101 through NFR-405 |
-| [`docs/validation.md`](./validation.md) | CI/CD validation rules | specification.md:2-19 (all sections) | - | FR-001 through FR-014, NFR-101 through NFR-405 |
-| [`docs/runbook.md`](./runbook.md) | Operational runbook | specification.md:2-19 (all sections) | - | FR-001 through FR-014, NFR-101 through NFR-405 |
-
-### 16.2 Implementation Files
-
-| File | Platform | Features | Specification Traceability | Requirement ID(s) |
-|------|----------|----------|---------------------------|-------------------|
-| [`src/msghandler.jl`](../src/msghandler.jl) | Julia | Full feature set, Arrow IPC, multiple dispatch | specification.md:2-19 (all sections) | FR-001 through FR-014, NFR-101 through NFR-405 |
-| [`src/msghandler_ssr.js`](../src/msghandler_ssr.js) | Node.js | Arrow IPC, async/await | specification.md:2-19 (all sections) | FR-001 through FR-014, NFR-101 through NFR-405 |
-| [`src/msghandler_csr.js`](../src/msghandler_csr.js) | Browser | JSON table only, WebSocket NATS | specification.md:2-19 (all sections) | FR-001 through FR-014, NFR-101 through NFR-405 |
-| [`src/msghandler.py`](../src/msghandler.py) | Python | Arrow IPC, async/await | specification.md:2-19 (all sections) | FR-001 through FR-014, NFR-101 through NFR-405 |
-| [`src/msghandler.dart`](../src/msghandler.dart) | Dart | Full feature set, Arrow IPC, async/await | specification.md:2-19 (all sections) | FR-001 through FR-014, NFR-101 through NFR-405 |
-| [`src/msghandler.rs`](../src/msghandler.rs) | Rust | Full feature set, Arrow IPC, async/await, type-safe, file upload helpers | specification.md:2-19 (all sections) | FR-001 through FR-014, NFR-101 through NFR-405 |
-| [`src/msghandler_mpy.py`](../src/msghandler_mpy.py) | MicroPython | Limited to direct transport | specification.md:2-19 (all sections) | FR-005, FR-006, FR-012 |
-
-### 16.3 External Dependencies
-
-| Platform | Package | Version | Purpose | Specification Traceability | Requirement ID(s) |
-|----------|---------|---------|---------|---------------------------|-------------------|
-| Julia | NATS.jl | Latest | NATS client | specification.md:11 | FR-013, FR-014, NFR-201 |
-| Julia | JSON.jl | Latest | JSON serialization | specification.md:11 | FR-012, NFR-101, NFR-102 |
-| Julia | Arrow.jl | Latest | Arrow IPC support | specification.md:11 | FR-002, FR-012 |
-| Julia | HTTP.jl | Latest | HTTP file server | specification.md:11 | FR-008, FR-009 |
-| Julia | UUIDs.jl | Latest | UUID generation | specification.md:11 | FR-011, NFR-401 |
-| Node.js | nats | Latest | NATS client (TCP) | specification.md:11 | FR-013, FR-014 |
-| Node.js | node-fetch | Latest | HTTP file server | specification.md:11 | FR-008, FR-009 |
-| Browser | nats.ws | Latest | NATS client (WebSocket) | specification.md:11 | FR-013, FR-014 |
-| Browser | nats | Latest | NATS client (for bundling) | specification.md:11 | FR-013, FR-014 |
-| Python | nats-py | Latest | NATS client | specification.md:11 | FR-013, FR-014 |
-| Python | aiohttp | Latest | HTTP file server | specification.md:11 | FR-008, FR-009 |
-| Python | pyarrow | Latest | Arrow IPC support | specification.md:11 | FR-002, FR-012 |
-| Dart | nats | Latest | NATS client | specification.md:11 | FR-013, FR-014 |
-| Dart | http | Latest | HTTP file server | specification.md:11 | FR-008, FR-009 |
-| Dart | uuid | Latest | UUID generation | specification.md:11 | FR-011, NFR-401 |
-| Dart | dart-arrow | Latest | Arrow IPC support | specification.md:11 | FR-002, FR-012 |
-| Rust | nats | Latest | NATS client | specification.md:11 | FR-013, FR-014 |
-| Rust | serde | Latest | JSON serialization | specification.md:11 | FR-012, NFR-101, NFR-102 |
-| Rust | serde_json | Latest | JSON handling | specification.md:11 | FR-012, NFR-101, NFR-102 |
-| Rust | tokio | Latest | Async runtime | specification.md:11 | FR-013, FR-014 |
-| Rust | reqwest | Latest | HTTP file server | specification.md:11 | FR-008, FR-009 |
-| Rust | uuid | Latest | UUID generation | specification.md:11 | FR-011, NFR-401 |
-| Rust | arrow2 | Latest | Arrow IPC support | specification.md:11 | FR-002, FR-012 |
-| MicroPython | builtin | N/A | Limited implementation | specification.md:11 | FR-005, FR-006, FR-012 |
-
----
-
-## 17. Change Log
-
-| Date | Version | Changes | Specification Reference |
-|------|---------|---------|------------------------|
-| 2026-03-23 | 1.1.0 | Updated to ASG Framework architecture guidelines | specification.md:2-19 (all sections) |
-| 2026-03-15 | 1.1.0 | JavaScript connection management | specification.md:2-19 (all sections) |
-| 2026-03-13 | 1.0.0 | Initial architecture documentation | specification.md:2-19 (all sections) |
-
----
-
-## 18. Gap-Check Validation
-
-| Stage Transition | Gap-Check Question | Status |
-|------------------|-------------------|--------|
-| Requirements → Specification | Does the Specification define all edge cases and conflict scenarios from the Requirements? | ✅ Verified - All FR-XXX requirements have corresponding spec rules |
-| Specification → UI Specification | Does the UI Specification expose all the data and states defined in the Specification? | ⏳ Pending - UI spec not yet created |
-| UI Specification → Walkthrough | Does the Walkthrough reflect the complete flow including error states and timing? | ⏳ Pending - UI spec not yet created |
-| Walkthrough → Architecture | Does the Architecture support the performance and integration requirements defined in the Walkthrough? | ✅ Verified - Architecture supports all walkthrough flows |
-
----
-
-*This architecture document is versioned and maintained in git alongside the codebase. All implementations must adhere to this architecture.*
diff --git a/docs/implementation-plan.md b/docs/implementation-plan.md
new file mode 100644
index 0000000..77c21e3
--- /dev/null
+++ b/docs/implementation-plan.md
@@ -0,0 +1,416 @@
+# Implementation Plan: msghandler
+
+**Version**: 1.3.0
+**Date**: 2026-05-19
+**Status**: Active
+**Ground Truth**: [`src/msghandler.jl`](../src/msghandler.jl)
+
+---
+
+## 1. Implementation Phases and Timeline
+
+### Phase 1: Core API Implementation (Week 1-2)
+| Task | Priority | Estimated Effort | Status |
+|------|----------|-----------------|--------|
+| Core `smartpack()` implementation | P0 | 3 days | ✅ Complete |
+| Core `smartunpack()` implementation | P0 | 3 days | ✅ Complete |
+| Message envelope structure | P0 | 2 days | ✅ Complete |
+| Payload type handling | P0 | 2 days | ✅ Complete |
+| Transport adapter layer | P0 | 3 days | ✅ Complete |
+
+**Deliverables**:
+- Julia module: `src/msghandler.jl`
+- Node.js module: `src/msghandler_ssr.js`
+- Browser module: `src/msghandler_csr.js`
+- Python module: `src/msghandler.py`
+- MicroPython module: `src/msghandler_mpy.py`
+
+### Phase 2: File Server Integration (Week 3)
+| Task | Priority | Estimated Effort | Status |
+|------|----------|-----------------|--------|
+| File server upload handler | P1 | 2 days | ✅ Complete |
+| File server download handler | P1 | 2 days | ✅ Complete |
+| Exponential backoff logic | P1 | 1 day | ✅ Complete |
+| Plik integration | P1 | 2 days | ✅ Complete |
+
+**Deliverables**:
+- Upload handler with plik_oneshot_upload
+- Download handler with retry logic
+- Configurable file server URL
+
+### Phase 3: Platform-Specific Features (Week 4)
+| Task | Priority | Estimated Effort | Status |
+|------|----------|-----------------|--------|
+| Arrow IPC support (Desktop) | P1 | 3 days | ✅ Complete |
+| JSON table support (Browser) | P1 | 2 days | ✅ Complete |
+| Browser WebSocket transport | P1 | 2 days | ✅ Complete |
+| MicroPython optimizations | P2 | 2 days | ✅ Complete |
+
+**Deliverables**:
+- Arrow IPC serialization for tabular data
+- JSON table format for browser compatibility
+- Browser-specific transport layer
+- Memory-optimized MicroPython implementation
+
+### Phase 4: Cross-Platform Testing (Week 5)
+| Task | Priority | Estimated Effort | Status |
+|------|----------|-----------------|--------|
+| Text message tests | P1 | 1 day | ✅ Complete |
+| Dictionary tests | P1 | 1 day | ✅ Complete |
+| Tabular data tests | P1 | 2 days | ✅ Complete |
+| Mixed payload tests | P1 | 2 days | ✅ Complete |
+| Large file tests | P1 | 2 days | ✅ Complete |
+
+**Deliverables**:
+- Platform-specific test suites
+- Integration test scenarios
+- Performance benchmarks
+
+### Phase 5: Documentation & Examples (Week 6)
+| Task | Priority | Estimated Effort | Status |
+|------|----------|-----------------|--------|
+| API documentation | P2 | 2 days | ✅ Complete |
+| Walkthrough examples | P2 | 2 days | ✅ Complete |
+| Architecture diagrams | P2 | 1 day | ✅ Complete |
+| Deployment guides | P2 | 1 day | ✅ Complete |
+
+**Deliverables**:
+- Comprehensive documentation
+- Code examples for all platforms
+- Deployment runbooks
+
+---
+
+## 2. Module/Component Breakdown
+
+### Core Modules
+
+#### msghandler.jl (Julia)
+```
+src/
+└── msghandler.jl
+ ├── Constants (DEFAULT_SIZE_THRESHOLD, etc.)
+ ├── msg_payload_v1 struct
+ ├── msg_envelope_v1 struct
+ ├── Serialization functions
+ │ ├── serialize_text()
+ │ ├── serialize_dictionary()
+ │ ├── serialize_arrowtable()
+ │ ├── serialize_jsontable()
+ │ └── serialize_binary()
+ ├── Deserialization functions
+ │ ├── deserialize_text()
+ │ ├── deserialize_dictionary()
+ │ ├── deserialize_arrowtable()
+ │ ├── deserialize_jsontable()
+ │ └── deserialize_binary()
+ ├── File server handlers
+ │ ├── plik_oneshot_upload()
+ │ └── _fetch_with_backoff()
+ ├── smartpack() - Main sender function
+ └── smartunpack() - Main receiver function
+```
+
+**Dependencies**:
+- JSON.jl (JSON serialization)
+- Arrow.jl (Arrow IPC)
+- HTTP.jl (File server)
+- UUIDs.jl (IDs)
+- DataFrames.jl (DataFrame support)
+
+#### msghandler_ssr.js (Node.js)
+```
+src/
+├── msghandler_ssr.js
+│ ├── Constants
+│ ├── msg_payload_v1 class
+│ ├── msg_envelope_v1 class
+│ ├── Serialization methods
+│ ├── Deserialization methods
+│ ├── File server handlers
+│ ├── smartpack() function
+│ └── smartunpack() function
+└── nats/
+ ├── NATSClient.js
+ └── NATSConnectionPool.js
+```
+
+**Dependencies**:
+- nats (NATS client)
+- node-fetch (HTTP file server)
+
+#### msghandler_csr.js (Browser)
+```
+src/
+└── msghandler_csr.js
+ ├── Constants
+ ├── msg_payload_v1 class
+ ├── msg_envelope_v1 class
+ ├── Serialization methods (JSON table only)
+ ├── Deserialization methods
+ ├── File server handlers (browser-compatible)
+ ├── smartpack() function
+ └── smartunpack() function
+```
+
+**Dependencies**:
+- nats.ws (Browser NATS client)
+
+#### msghandler.py (Python)
+```
+src/
+└── msghandler.py
+ ├── Constants
+ ├── msg_payload_v1 class
+ ├── msg_envelope_v1 class
+ ├── Serialization methods
+ ├── Deserialization methods
+ ├── File server handlers
+ ├── smartpack() async function
+ └── smartunpack() async function
+```
+
+**Dependencies**:
+- aiohttp (HTTP file server)
+- pyarrow (Arrow IPC)
+- uuid (IDs)
+
+#### msghandler.rs (Rust)
+```
+src/
+├── msghandler.rs
+│ ├── Constants
+│ ├── msg_payload_v1 struct
+│ ├── msg_envelope_v1 struct
+│ ├── Serialization traits
+│ ├── Deserialization traits
+│ ├── File server handlers
+│ ├── smartpack() async function
+│ └── smartunpack() async function
+├── Payload enum
+├── smartpackOptions struct
+└── smartunpackOptions struct
+```
+
+**Dependencies**:
+- tokio (Async runtime)
+- serde (JSON serialization)
+- reqwest (HTTP file server)
+- arrow2 (Arrow IPC)
+
+#### msghandler_mpy.py (MicroPython)
+```
+src/
+└── msghandler_mpy.py
+ ├── Constants (lower thresholds)
+ ├── msg_payload_v1 class
+ ├── msg_envelope_v1 class
+ ├── serialize_text()
+ ├── deserialize_text()
+ ├── serialize_dictionary()
+ ├── deserialize_dictionary()
+ └── smartpack()/smartunpack() functions
+```
+
+**Constraints**:
+- Limited to text and dictionary types
+- Direct transport only (no file server)
+- 100KB threshold for memory constraints
+
+---
+
+## 3. Task List
+
+### Core API Tasks
+
+| Task ID | Description | Assignee | Priority | Status |
+|---------|-------------|----------|----------|--------|
+| T-001 | Implement `smartpack()` with tuple format | Developer A | P0 | ✅ Complete |
+| T-002 | Implement `smartunpack()` with type handling | Developer A | P0 | ✅ Complete |
+| T-003 | Create message envelope structure | Developer A | P0 | ✅ Complete |
+| T-004 | Implement transport adapter | Developer B | P0 | ✅ Complete |
+| T-005 | Add correlation ID support | Developer A | P0 | ✅ Complete |
+
+### File Server Tasks
+
+| Task ID | Description | Assignee | Priority | Status |
+|---------|-------------|----------|----------|--------|
+| T-006 | Implement Plik upload handler | Developer B | P1 | ✅ Complete |
+| T-007 | Implement file download with retry | Developer B | P1 | ✅ Complete |
+| T-008 | Add exponential backoff logic | Developer B | P1 | ✅ Complete |
+
+### Platform Tasks
+
+| Task ID | Description | Assignee | Priority | Status |
+|---------|-------------|----------|----------|--------|
+| T-009 | Implement Arrow IPC (Julia/Python/Node.js) | Developer A | P1 | ✅ Complete |
+| T-010 | Implement JSON table (Browser) | Developer B | P1 | ✅ Complete |
+| T-011 | Implement MicroPython optimizations | Developer C | P2 | ✅ Complete |
+| T-012 | Browser WebSocket transport | Developer B | P1 | ✅ Complete |
+
+### Testing Tasks
+
+| Task ID | Description | Assignee | Priority | Status |
+|---------|-------------|----------|------------------|
+| T-013 | Text message tests | QA Team | P1 | ✅ Complete |
+| T-014 | Dictionary tests | QA Team | P1 | ✅ Complete |
+| T-015 | Tabular data tests | QA Team | P1 | ✅ Complete |
+| T-016 | Mixed payload tests | QA Team | P1 | ✅ Complete |
+| T-017 | Large file tests | QA Team | P1 | ✅ Complete |
+
+---
+
+## 4. Test Strategy
+
+### Unit Tests
+
+| Test Category | Coverage | Files | Requirements |
+|---------------|----------|-------|--------------|
+| Serialization | All payload types | `test/test_*_sender.*` | FR-001 through FR-012 |
+| Deserialization | All payload types | `test/test_*_receiver.*` | FR-001 through FR-012 |
+| Transport selection | Direct vs link | `test/test_*_mix_payloads.*` | FR-003, FR-004, FR-006 |
+| File server upload | Plik integration | Platform-specific | FR-008, FR-009 |
+| File server download | Exponential backoff | Platform-specific | FR-010, FR-011 |
+
+### Integration Tests
+
+| Scenario | Platforms | Payloads | Transport | Requirements |
+|----------|-----------|----------|-----------|--------------|
+| Single text (small) | All | text | direct | FR-001, FR-012 |
+| Single dictionary (small) | All | dictionary | direct | FR-002, FR-012 |
+| Single arrow table (small) | Desktop | arrowtable | direct | FR-002, FR-012 |
+| Single JSON table (small) | All | jsontable | direct | FR-001, FR-002, FR-006 |
+| Single image (small) | All | image | direct | FR-001, FR-006 |
+| Single text (large) | All | text | link | FR-003, FR-008, FR-009 |
+| Mixed payloads | All | text + dictionary + image | mixed | FR-006, FR-007 |
+
+### Test Coverage Targets
+
+| Phase | Coverage Target | Method |
+|-------|----------------|--------|
+| Phase 1 | 70% | Unit tests per platform |
+| Phase 2 | 80% | Add integration tests |
+| Phase 3 | 85% | Add edge case tests |
+| Phase 4 | 90% | Add performance tests |
+
+---
+
+## 5. Build and Deployment Preparation
+
+### Continuous Integration
+
+| Check | Command | Purpose |
+|-------|---------|---------|
+| Linting | `npm run lint` | Code style enforcement |
+| Type checking | `npx tsc --noEmit` | Type safety (JavaScript/TypeScript) |
+| Unit tests | `npm test` | Functionality validation |
+| Integration tests | `npm run test:integration` | Cross-platform validation |
+| Coverage | `npm run coverage` | Test coverage tracking |
+
+### Deployment Pipeline
+
+```
+GitHub Push
+ ↓
+CI/CD Pipeline
+ ↓
+├──→ Linting (all platforms)
+├──→ Unit tests (all platforms)
+├──→ Integration tests (cross-platform)
+├──→ Coverage report
+└──→ Build documentation
+ ↓
+Release (if all checks pass)
+ ↓
+├──→ GitHub Releases
+├──→ Package registry (npm, PyPI)
+└──→ Documentation site
+```
+
+---
+
+## 6. Risk Mitigation
+
+### Known Blockers
+
+| Risk | Mitigation Step | Owner |
+|------|----------------|-------|
+| **Browser Arrow IPC** | Use JSON table as fallback | Developer B |
+| **MicroPython memory** | 100KB threshold, direct transport only | Developer C |
+| **File server availability** | Exponential backoff with graceful degradation | Developer B |
+
+### Known Unknowns
+
+| Unknown | Monitoring Strategy | Response Plan |
+|---------|-------------------|---------------|
+| Platform-specific bugs | Comprehensive test coverage | Hotfix with platform-specific handling |
+| Performance bottlenecks | Load testing and profiling | Optimized serialization/deserialization |
+
+---
+
+## 7. Requirements Traceability
+
+### Functional Requirements
+
+| Requirement ID | Implementation Location | Status |
+|---------------|------------------------|--------|
+| FR-001 | All platform modules | ✅ Complete |
+| FR-002 | All platform modules | ✅ Complete |
+| FR-003 | All platform modules (size_threshold logic) | ✅ Complete |
+| FR-004 | All platform modules | ✅ Complete |
+| FR-005 | MicroPython module | ✅ Complete |
+| FR-006 | All platform modules | ✅ Complete |
+| FR-007 | All platform modules | ✅ Complete |
+| FR-008 | All platform modules | ✅ Complete |
+| FR-009 | All platform modules | ✅ Complete |
+| FR-010 | All platform modules | ✅ Complete |
+| FR-011 | All platform modules | ✅ Complete |
+| FR-012 | All platform modules | ✅ Complete |
+| FR-013 | All platform modules | ✅ Complete |
+| FR-014 | All platform modules | ✅ Complete |
+
+### Non-Functional Requirements
+
+| NFR ID | Implementation Location | Status |
+|--------|------------------------|--------|
+| NFR-101 | Serialization functions | ✅ Complete |
+| NFR-102 | Deserialization functions | ✅ Complete |
+| NFR-103 | Transport adapter | ✅ Complete |
+| NFR-104 | File upload handler | ✅ Complete |
+| NFR-105 | File download handler | ✅ Complete |
+| NFR-106 | MicroPython module | ✅ Complete |
+| NFR-107 | Performance benchmarks | ✅ Complete |
+| NFR-201 | Transport adapter | ✅ Complete |
+| NFR-202 | File download retry logic | ✅ Complete |
+| NFR-203 | Transport adapter | ✅ Complete |
+| NFR-401 | Message envelope | ✅ Complete |
+| NFR-402 | Metrics instrumentation | ✅ Complete |
+| NFR-403 | Correlation ID propagation | ✅ Complete |
+
+---
+
+## 8. Validation Gates
+
+### Pre-Release Checklist
+
+| Gate | Check | Pass Criteria |
+|------|-------|--------------|
+| **G-001** | All unit tests pass | 100% pass rate per platform |
+| **G-002** | Integration tests pass | Cross-platform round-trip successful |
+| **G-003** | Coverage threshold | ≥80% line coverage |
+| **G-004** | Linting clean | No warnings or errors |
+| **G-005** | Specification compliance | All spec rules validated |
+| **G-006** | Documentation complete | All required docs present |
+
+### CI/CD Validation
+
+| Check | Command | Failure Action |
+|-------|---------|---------------|
+| Syntax | `julia --check-base` | Block PR |
+| Unit tests | `julia test/runtests.jl` | Block PR |
+| Integration | `npm run test:integration` | Block PR |
+| Coverage | `codecov` | Report only |
+
+---
+
+*This implementation plan is versioned and maintained in git alongside the codebase. All implementations must adhere to this plan.*
diff --git a/docs/requirements.md b/docs/requirements.md
index f6b9198..70abc0d 100644
--- a/docs/requirements.md
+++ b/docs/requirements.md
@@ -1,7 +1,7 @@
# Requirements Document: msghandler
-**Version**: 1.2.0
-**Date**: 2026-05-13
+**Version**: 1.3.0
+**Date**: 2026-05-22
**Status**: Active
**Ground Truth**: [`src/msghandler.jl`](../src/msghandler.jl)
@@ -11,7 +11,7 @@
### 1.1 Business Goal
-msghandler is a cross-platform, bi-directional data bridge that enables seamless communication between **Julia**, **JavaScript**, **Python**, **Dart**, **Rust**, and **MicroPython** applications using NATS as the message bus. The system implements the **Claim-Check pattern** for efficient handling of large payloads (>0.5MB) by uploading them to an HTTP file server instead of sending raw binary data over NATS.
+msghandler is a cross-platform, bi-directional data bridge that enables seamless communication between **Julia**, **JavaScript**, **Python**, **Dart**, **Rust**, and **MicroPython** applications using a message broker as the transport layer. The system implements the **Claim-Check pattern** for efficient handling of large payloads (>0.5MB) by uploading them to an HTTP file server instead of sending raw binary data over the transport layer.
### 1.2 User Stories (with acceptance criteria)
@@ -19,13 +19,13 @@ msghandler is a cross-platform, bi-directional data bridge that enables seamless
|-------|----------|---------------------|
| **As a Julia developer**, I want to send text messages to JavaScript/Dart applications that lives on a server and also on a browser | P1 | Text messages are serialized, encoded, and received correctly across platforms |
| **As a Python developer**, I want to send tabular data to Julia/Dart applications | P1 | DataFrame exchange works with both Arrow IPC and JSON formats |
-| **As a JavaScript developer**, I want to send large files (>0.5MB) from JavaScript applications that lives on a server and also on a browser to other applications | P1 | Large files are automatically uploaded to file server and URLs are sent via NATS |
+| **As a JavaScript developer**, I want to send large files (>0.5MB) from JavaScript applications that lives on a server and also on a browser to other applications | P1 | Large files are automatically uploaded to file server and URLs are sent via the transport layer |
| **As a Dart developer**, I want to send text messages to other platforms | P1 | Text messages are serialized, encoded, and received correctly across platforms |
| **As a Dart developer**, I want to send dictionary data to other platforms | P1 | JSON-serializable data is exchanged correctly |
| **As a Dart developer**, I want to send tabular data (List