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This commit is contained in:
narawat
2026-02-17 21:04:32 +07:00
parent ad87934abf
commit 1d5c6f3348
3 changed files with 142 additions and 147 deletions
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47
docs/architecture.md
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@@ -12,10 +12,16 @@ The system uses **handler functions** to abstract file server operations, allowi
```julia
# Upload handler - uploads data to file server and returns URL
# The handler is passed to smartsend as fileserverUploadHandler parameter
# It receives: (fileserver_url::String, dataname::String, data::Vector{UInt8})
# Returns: Dict{String, Any} with keys: "status", "uploadid", "fileid", "url"
fileserverUploadHandler(fileserver_url::String, dataname::String, data::Vector{UInt8})::Dict{String, Any}
# Download handler - fetches data from file server URL
fileserverDownloadHandler(fileserver_url::String, url::String, max_retries::Int, base_delay::Int, max_delay::Int)::Vector{UInt8}
# Download handler - fetches data from file server URL with exponential backoff
# The handler is passed to smartreceive as fileserverDownloadHandler parameter
# It receives: (url::String, max_retries::Int, base_delay::Int, max_delay::Int, correlation_id::String)
# Returns: Vector{UInt8} (the downloaded data)
fileserverDownloadHandler(url::String, max_retries::Int, base_delay::Int, max_delay::Int, correlation_id::String)::Vector{UInt8}
```
This design allows the system to support multiple file server backends without changing the core messaging logic.
@@ -154,8 +160,7 @@ end
"brokerURL": "nats://localhost:4222",
"metadata": {
"content_type": "application/octet-stream",
"content_length": 123456
},
"payloads": [
@@ -168,7 +173,7 @@ end
"size": 15433,
"data": "base64-encoded-string",
"metadata": {
"checksum": "sha256_hash"
}
},
{
@@ -180,7 +185,7 @@ end
"size": 524288,
"data": "http://localhost:8080/file/UPLOAD_ID/FILE_ID/data.arrow",
"metadata": {
"checksum": "sha256_hash"
}
}
]
@@ -321,19 +326,19 @@ function smartsend(
```julia
function smartreceive(
msg::NATS.Message;
fileserverDownloadHandler::Function,
max_retries::Int = 5,
base_delay::Int = 100,
max_delay::Int = 5000
msg::NATS.Message,
fileserverDownloadHandler::Function=_fetch_with_backoff;
max_retries::Int = 5,
base_delay::Int = 100,
max_delay::Int = 5000
)
# Parse envelope
# Iterate through all payloads
# For each payload: check transport type
# If direct: decode Base64 payload
# If link: fetch from URL with exponential backoff using fileserverDownloadHandler
# Deserialize payload based on type
# Return list of (dataname, data) tuples
# Parse envelope
# Iterate through all payloads
# For each payload: check transport type
# If direct: decode Base64 payload
# If link: fetch from URL with exponential backoff using fileserverDownloadHandler
# Deserialize payload based on type
# Return list of (dataname, data) tuples
end
```
@@ -347,10 +352,12 @@ end
3. For each payload:
- Determine transport type (`direct` or `link`)
- If `direct`: decode Base64 data from the message
- If `link`: fetch data from URL using exponential backoff
- If `link`: fetch data from URL using exponential backoff (via `fileserverDownloadHandler`)
- Deserialize based on payload type (`dictionary`, `table`, `binary`, etc.)
4. Return list of `(dataname, data)` tuples
**Note:** The `fileserverDownloadHandler` receives `(url::String, max_retries::Int, base_delay::Int, max_delay::Int, correlation_id::String)` and returns `Vector{UInt8}`.
### JavaScript Implementation
#### Dependencies
@@ -388,10 +395,10 @@ async function smartsend(subject, data, options = {})
async function smartreceive(msg, options = {})
// options object should include:
// - fileserverDownloadHandler: function to fetch data from file server URL
// - fileserver_url: base URL of the file server
// - max_retries: maximum retry attempts for fetching URL
// - base_delay: initial delay for exponential backoff in ms
// - max_delay: maximum delay for exponential backoff in ms
// - correlationId: optional correlation ID for tracing
```
**Process Flow:**

19
src/NATSBridge.jl
View File

@@ -14,8 +14,8 @@
# # Upload handler - uploads data to file server and returns URL
# fileserverUploadHandler(fileserver_url::String, dataname::String, data::Vector{UInt8})::Dict{String, Any}
#
# # Download handler - fetches data from file server URL
# fileserverDownloadHandler(fileserver_url::String, url::String, max_retries::Int, base_delay::Int, max_delay::Int)::Vector{UInt8}
# # Download handler - fetches data from file server URL with exponential backoff
# fileserverDownloadHandler(url::String, max_retries::Int, base_delay::Int, max_delay::Int, correlation_id::String)::Vector{UInt8}
# ```
#
# Multi-Payload Support (Standard API):
@@ -169,7 +169,7 @@ function envelope_to_json(env::msgEnvelope_v1)
"type" => payload.type,
"transport" => payload.transport,
"encoding" => payload.encoding,
"size" => payload.size
"size" => payload.size,
)
# Include data based on transport type
if payload.transport == "direct" && payload.data !== nothing
@@ -286,6 +286,7 @@ function smartsend(
subject::String, # smartreceive's subject
data::AbstractArray{Tuple{String, Any, String}}; # List of (dataname, data, type) tuples
nats_url::String = DEFAULT_NATS_URL,
fileserver_url = DEFAULT_FILESERVER_URL,
fileserverUploadHandler::Function=plik_oneshot_upload, # a function to handle uploading data to specific HTTP fileserver
size_threshold::Int = DEFAULT_SIZE_THRESHOLD,
correlation_id::Union{String, Nothing} = nothing,
@@ -329,7 +330,7 @@ function smartsend(
encoding = "base64",
size = payload_size,
data = payload_b64,
metadata = Dict("content_length" => payload_size)
metadata = Dict("payload_bytes" => payload_size)
)
push!(payloads, payload)
else
@@ -337,9 +338,9 @@ function smartsend(
log_trace(cid, "Using link transport, uploading to fileserver") # Log link transport choice
# Upload to HTTP server
response = fileserverUploadHandler(DEFAULT_FILESERVER_URL, dataname, payload_bytes)
response = fileserverUploadHandler(fileserver_url, dataname, payload_bytes)
if response[:status] != 200 # Check if upload was successful
if response["status"] != 200 # Check if upload was successful
error("Failed to upload data to fileserver: $(response[:status])") # Throw error if upload failed
end
@@ -355,7 +356,7 @@ function smartsend(
encoding = "none",
size = payload_size,
data = url,
metadata = Dict("dataname" => dataname, "content_length" => payload_size, "format" => "arrow_ipc_stream")
metadata = Dict()
)
push!(payloads, payload)
end
@@ -585,11 +586,11 @@ function smartreceive(
elseif transport == "link" # Link transport - payload is at URL
log_trace(json_data["correlationId"], "Link transport - fetching '$dataname' from URL") # Log link transport handling
# Extract URL from the payload
# Extract download URL from the payload
url = String(payload_data["data"])
#[WORKING] Fetch with exponential backoff using the download handler
downloaded_data = fileserverDownloadHandler(json_data["data"], max_retries, base_delay, max_delay,json_data["correlationId"])
downloaded_data = fileserverDownloadHandler(url, max_retries, base_delay, max_delay, json_data["correlationId"])
# Deserialize based on type
data_type = String(payload_data["type"])

213
test/test_julia_julia_data_transfer.jl
View File

@@ -1,11 +1,13 @@
#!/usr/bin/env julia
# Test script for large payload testing using binary transport
# Tests sending a large file (> 1MB) via smartsend with binary type
# Updated to match NATSBridge.jl API
using NATS, JSON, UUIDs, Dates
using HTTP
# Include the bridge module
include("../src/NATSBridge.jl")
include("./src/NATSBridge.jl")
using .NATSBridge
# Configuration
@@ -31,9 +33,55 @@ function log_trace(message)
println("[$timestamp] [Correlation: $correlation_id] $message")
end
# File upload handler for plik server
function plik_upload_handler(fileserver_url::String, dataname::String, data::Vector{UInt8})::Dict{String, Any}
# Get upload ID
url_getUploadID = "$fileserver_url/upload"
headers = ["Content-Type" => "application/json"]
body = """{ "OneShot" : true }"""
httpResponse = HTTP.request("POST", url_getUploadID, headers, body; body_is_form=false)
responseJson = JSON.parse(String(httpResponse.body))
uploadid = responseJson["id"]
uploadtoken = responseJson["uploadToken"]
# Upload file
file_multipart = HTTP.Multipart(dataname, IOBuffer(data), "application/octet-stream")
url_upload = "$fileserver_url/file/$uploadid"
headers = ["X-UploadToken" => uploadtoken]
form = HTTP.Form(Dict("file" => file_multipart))
httpResponse = HTTP.post(url_upload, headers, form)
responseJson = JSON.parse(String(httpResponse.body))
fileid = responseJson["id"]
url = "$fileserver_url/file/$uploadid/$fileid/$dataname"
return Dict("status" => httpResponse.status, "uploadid" => uploadid, "fileid" => fileid, "url" => url)
end
# File download handler for plik server
function plik_download_handler(fileserver_url::String, url::String, max_retries::Int, base_delay::Int, max_delay::Int)::Vector{UInt8}
delay = base_delay
for attempt in 1:max_retries
try
response = HTTP.request("GET", url)
if response.status == 200
return response.body
else
error("Failed to fetch: $(response.status)")
end
catch e
if attempt < max_retries
sleep(delay / 1000.0)
delay = min(delay * 2, max_delay)
end
end
end
error("Failed to fetch data after $max_retries attempts")
end
# Sender: Send large binary file via smartsend
function test_large_binary_send()
conn = NATS.connect(NATS_URL)
# Read the large file as binary data
log_trace("Reading large file: $FILE_PATH")
file_data = read(FILE_PATH)
@@ -43,74 +91,73 @@ function test_large_binary_send()
# Use smartsend with binary type - will automatically use link transport
# if file size exceeds the threshold (1MB by default)
# API: smartsend(subject, [(dataname, data, type), ...]; keywords...)
env = NATSBridge.smartsend(
SUBJECT,
file_data,
"binary",
[(filename, file_data, "binary")], # List of (dataname, data, type) tuples
nats_url = NATS_URL,
fileserver_url = FILESERVER_URL;
dataname=filename
fileserverUploadHandler = plik_upload_handler,
size_threshold = 1_000_000,
correlation_id = correlation_id,
msg_purpose = "chat",
sender_name = "sender",
receiver_name = "",
receiver_id = "",
reply_to = "",
reply_to_msg_id = ""
)
log_trace("Sent message with transport: $(env.transport)")
log_trace("Envelope type: $(env.type)")
log_trace("Sent message with transport: $(env.payloads[1].transport)")
log_trace("Envelope type: $(env.payloads[1].type)")
# Check if link transport was used
if env.transport == "link"
if env.payloads[1].transport == "link"
log_trace("Using link transport - file uploaded to HTTP server")
log_trace("URL: $(env.url)")
log_trace("URL: $(env.payloads[1].data)")
else
log_trace("Using direct transport - payload sent via NATS")
end
NATS.drain(conn)
end
# Receiver: Listen for messages and verify large payload handling
function test_large_binary_receive()
conn = NATS.connect(NATS_URL)
NATS.subscribe(conn, SUBJECT) do msg
log_trace("Received message on $(msg.subject)")
conn = NATS.connect(NATS_URL)
NATS.subscribe(conn, SUBJECT) do msg
log_trace("Received message on $(msg.subject)")
# Use NATSBridge.smartreceive to handle the data
result = NATSBridge.smartreceive(msg)
# Check transport type
if result.envelope.transport == "direct"
log_trace("Received direct transport")
else
# For link transport, result.data is the URL
log_trace("Received link transport")
# Use NATSBridge.smartreceive to handle the data
# API: smartreceive(msg, download_handler; max_retries, base_delay, max_delay)
result = NATSBridge.smartreceive(
msg,
plik_download_handler,
max_retries = 5,
base_delay = 100,
max_delay = 5000
)
# Result is a list of (dataname, data) tuples
for (dataname, data) in result
# Check transport type from the envelope
# For link transport, data is the URL string
# For direct transport, data is the actual payload bytes
if isa(data, Vector{UInt8})
file_size = length(data)
log_trace("Received $(file_size) bytes of binary data for '$dataname'")
# Save received data to a test file
output_path = "./new_$dataname"
write(output_path, data)
log_trace("Saved received data to $output_path")
else
log_trace("Received data for '$dataname' (type: $(typeof(data)))")
end
end
end
# Verify the received data matches the original
if result.envelope.type == "binary"
if isa(result.data, Vector{UInt8})
file_size = length(result.data)
log_trace("Received $(file_size) bytes of binary data")
# Save received data to a test file
println("metadata ", result.envelope.metadata)
dataname = result.envelope.metadata["dataname"]
if dataname != "NA"
output_path = "./new_$dataname"
write(output_path, result.data)
log_trace("Saved received data to $output_path")
end
# Verify file size
original_size = length(read(FILE_PATH))
if file_size == result.envelope.metadata["content_length"]
log_trace("SUCCESS: File size matches! Original: $(result.envelope.metadata["content_length"]) bytes")
else
log_trace("WARNING: File size mismatch! Original: $(result.envelope.metadata["content_length"]), Received: $file_size")
end
end
end
end
# Keep listening for 10 seconds
sleep(120)
NATS.drain(conn)
# Keep listening for 10 seconds
sleep(120)
NATS.drain(conn)
end
@@ -123,68 +170,8 @@ println("File: $FILE_PATH")
println("start smartsend")
test_large_binary_send()
# # Run receiver
# Run receiver
# println("testing smartreceive")
# test_large_binary_receive()
println("Test completed.")