un-inception/clients/python/async/examples/stream_processing.py
russell@unturf.com 35bbd37877 fix: CI validation scripts and example exit codes
lint-all-sdks.sh:
- Update paths to find SDKs in clients/ directory structure
- Add checks for Python, JavaScript, Ruby, Go, Rust, PHP, Perl, Lua, Bash, C
- Exit non-zero on lint failures (previously always exit 0)

validate-examples.sh:
- Fix race condition with parallel execution - aggregate results from temp files
  after all jobs complete (subshell variables don't propagate to parent)
- Add aggregate_results() function to collect stats from result JSON files

Python async SDK:
- Make aiohttp import optional with DependencyError exception
- Add _check_aiohttp() helper for clear error messages

Python examples (async + sync):
- Exit with code 0 when API keys missing (CI-friendly skip)
- Change "Error:" to "Skipping:" for missing credentials
- Wrap un_async imports in try/except for aiohttp ImportError
2026-02-07 18:01:51 -05:00

107 lines
3.2 KiB
Python

#!/usr/bin/env python3
"""
Stream Processing example for unsandbox Python SDK - Asynchronous Version
Demonstrates async generator patterns and streaming data processing.
Shows how to handle potentially large datasets with async/await.
To run:
export UNSANDBOX_PUBLIC_KEY="your-public-key"
export UNSANDBOX_SECRET_KEY="your-secret-key"
python3 stream_processing.py
Expected output:
Processing stream of data...
[stream-task-1] Processed 10 items, sum: 45
[stream-task-2] Processed 10 items, sum: 145
[stream-task-3] Processed 10 items, sum: 245
Stream processing completed!
"""
import asyncio
import sys
import os
# Add src to path for development
sys.path.insert(0, os.path.join(os.path.dirname(__file__), "..", "src"))
try:
from un_async import execute_code, CredentialsError
except ImportError as e:
print(f"Missing dependency: {e}")
print("Install with: pip install aiohttp")
sys.exit(0) # Exit gracefully for CI
async def run_stream_task(task_num: int, start: int, count: int, public_key: str, secret_key: str):
"""Execute stream processing task asynchronously."""
code = f"""
# Simulate stream processing with generator
def stream_generator(start, count):
for i in range(start, start + count):
yield i
# Process stream
total = 0
item_count = 0
for item in stream_generator({start}, {count}):
total += item
item_count += 1
print(f"Processed {{item_count}} items, sum: {{total}}")
"""
try:
result = await execute_code("python", code, public_key, secret_key)
output = result.get("stdout", "").strip()
print(f"[stream-task-{task_num}] {output}")
return {"task": task_num, "status": "completed"}
except Exception as e:
print(f"[stream-task-{task_num}] Error: {e}")
return {"task": task_num, "status": "failed"}
async def main():
"""Execute multiple stream processing tasks concurrently."""
try:
# Resolve credentials from environment
public_key = os.environ.get("UNSANDBOX_PUBLIC_KEY")
secret_key = os.environ.get("UNSANDBOX_SECRET_KEY")
if not public_key or not secret_key:
print("Skipping: UNSANDBOX_PUBLIC_KEY and UNSANDBOX_SECRET_KEY environment variables required")
print("To run: export UNSANDBOX_PUBLIC_KEY=your-key UNSANDBOX_SECRET_KEY=your-key")
return 0 # Exit gracefully for CI
# Create concurrent tasks for stream processing
print("Processing stream of data...")
tasks = [
run_stream_task(1, 0, 10, public_key, secret_key),
run_stream_task(2, 10, 10, public_key, secret_key),
run_stream_task(3, 20, 10, public_key, secret_key),
]
# Wait for all tasks to complete
results = await asyncio.gather(*tasks)
print("Stream processing completed!")
# Check results
all_completed = all(r.get("status") == "completed" for r in results)
return 0 if all_completed else 1
except CredentialsError as e:
print(f"Credentials error: {e}")
return 1
except Exception as e:
print(f"Error: {e}")
import traceback
traceback.print_exc()
return 1
if __name__ == "__main__":
exit_code = asyncio.run(main())
sys.exit(exit_code)