mirror of
https://github.com/Sea-Haven-Industries/proposal-system.git
synced 2026-09-30 04:13:13 +00:00
184bc1da7e
BLOCK-10: Add CloudWatch alarms (DLQ, Lambda errors, RDS, API 5xx) with SNS email BLOCK-11: Remove sync-over-async deadlock in CurrentUserService BLOCK-12: Add AppDelegate OAuth URL callback handler for mobile BLOCK-13: Wire mobile 401 interceptor to dispatch Redux logout BLOCK-14: Fix JWT base64 padding crash and SysAdmin role detection BLOCK-15: Reset pagination to page 1 on filter change BLOCK-16: Add unsaved-changes guard (beforeunload + useBlocker) to AdminWorkspace FIX-08: Add BulkUpdateLineItems FluentValidation validator FIX-13: Display auth errors on LoginPage FIX-25: Add token refresh with retry queue to mobile API client FIX-44: Add httpx retry logic to all Lambda handlers FIX-42/43: Align docker-compose PG version (15) and DB name (proposals) with RDS
342 lines
11 KiB
Python
342 lines
11 KiB
Python
"""Proposal System - Suggestion Engine Lambda.
|
|
|
|
Queries Bedrock Knowledge Base for similar proposals and invokes Claude
|
|
to generate line item suggestions for new proposals.
|
|
"""
|
|
|
|
import json
|
|
import logging
|
|
import os
|
|
import time
|
|
|
|
import boto3
|
|
import httpx
|
|
|
|
logger = logging.getLogger(__name__)
|
|
logger.setLevel(os.environ.get("LOG_LEVEL", "INFO"))
|
|
|
|
KNOWLEDGE_BASE_ID = os.environ.get("KNOWLEDGE_BASE_ID", "")
|
|
MODEL_ID = os.environ.get("MODEL_ID", "us.anthropic.claude-sonnet-4-5-20250929-v1:0")
|
|
API_BASE_URL = os.environ.get("API_BASE_URL", "")
|
|
INTERNAL_API_KEY_SECRET_ARN = os.environ.get("INTERNAL_API_KEY_SECRET_ARN", "")
|
|
|
|
bedrock_agent = boto3.client("bedrock-agent-runtime")
|
|
bedrock_runtime = boto3.client("bedrock-runtime")
|
|
secrets_client = boto3.client("secretsmanager")
|
|
|
|
_cached_api_key: str | None = None
|
|
|
|
|
|
def _get_api_key() -> str:
|
|
global _cached_api_key
|
|
if _cached_api_key is None:
|
|
if INTERNAL_API_KEY_SECRET_ARN:
|
|
resp = secrets_client.get_secret_value(SecretId=INTERNAL_API_KEY_SECRET_ARN)
|
|
_cached_api_key = resp["SecretString"]
|
|
else:
|
|
_cached_api_key = ""
|
|
return _cached_api_key
|
|
|
|
|
|
def handler(event, context):
|
|
for record in event.get("Records", []):
|
|
body = json.loads(record["body"])
|
|
payload = body.get("payload", body)
|
|
proposal_id = payload["proposalId"]
|
|
trigger = payload.get("trigger", "generate")
|
|
process_suggestion(proposal_id, trigger)
|
|
return {"statusCode": 200}
|
|
|
|
|
|
def process_suggestion(proposal_id: str, trigger: str):
|
|
proposal = fetch_proposal(proposal_id)
|
|
if not proposal:
|
|
logger.warning("Proposal %s not found", proposal_id)
|
|
return
|
|
|
|
scope = proposal.get("refinedScope") or proposal.get("scopeOfWork", "")
|
|
category = proposal.get("serviceCategory", "")
|
|
priority = proposal.get("priority", "")
|
|
|
|
existing_items = fetch_line_items(proposal_id)
|
|
|
|
similar_proposals = retrieve_similar(scope, category)
|
|
|
|
suggested_items = generate_line_items(scope, category, priority, similar_proposals)
|
|
|
|
post_line_items(proposal_id, suggested_items, existing_items)
|
|
|
|
store_similar_references(proposal_id, similar_proposals)
|
|
|
|
update_status_to_in_review(proposal_id)
|
|
|
|
|
|
def fetch_line_items(proposal_id: str) -> list[dict]:
|
|
try:
|
|
resp = _retry_request(
|
|
"GET",
|
|
f"{API_BASE_URL}/api/proposals/{proposal_id}/line-items",
|
|
headers=_api_headers(),
|
|
)
|
|
if resp.status_code == 200:
|
|
return resp.json()
|
|
except Exception as e:
|
|
logger.error("Error fetching line items: %s", e)
|
|
return []
|
|
|
|
|
|
def fetch_proposal(proposal_id: str) -> dict | None:
|
|
try:
|
|
resp = _retry_request(
|
|
"GET",
|
|
f"{API_BASE_URL}/api/proposals/{proposal_id}",
|
|
headers=_api_headers(),
|
|
)
|
|
if resp.status_code == 200:
|
|
return resp.json()
|
|
except Exception as e:
|
|
logger.error("Error fetching proposal: %s", e)
|
|
return None
|
|
|
|
|
|
def retrieve_similar(scope: str, category: str) -> list[dict]:
|
|
if not KNOWLEDGE_BASE_ID:
|
|
logger.info("No Knowledge Base configured, skipping retrieval")
|
|
return []
|
|
|
|
try:
|
|
filter_config = (
|
|
{"equals": {"key": "service_category", "value": category}}
|
|
if category
|
|
else None
|
|
)
|
|
|
|
params = {
|
|
"knowledgeBaseId": KNOWLEDGE_BASE_ID,
|
|
"retrievalQuery": {"text": scope},
|
|
"retrievalConfiguration": {
|
|
"vectorSearchConfiguration": {
|
|
"numberOfResults": 10,
|
|
}
|
|
},
|
|
}
|
|
|
|
if filter_config:
|
|
params["retrievalConfiguration"]["vectorSearchConfiguration"]["filter"] = (
|
|
filter_config
|
|
)
|
|
|
|
response = bedrock_agent.retrieve(**params)
|
|
|
|
results = []
|
|
for result in response.get("retrievalResults", []):
|
|
content = result.get("content", {}).get("text", "")
|
|
score = result.get("score", 0.0)
|
|
metadata = result.get("metadata", {})
|
|
source_uri = result.get("location", {}).get("s3Location", {}).get("uri", "")
|
|
|
|
results.append(
|
|
{
|
|
"content": content,
|
|
"score": score,
|
|
"metadata": metadata,
|
|
"sourceUri": source_uri,
|
|
}
|
|
)
|
|
|
|
return results
|
|
|
|
except Exception as e:
|
|
logger.error("Error retrieving from KB: %s", e)
|
|
return []
|
|
|
|
|
|
def generate_line_items(
|
|
scope: str,
|
|
category: str,
|
|
priority: str,
|
|
similar_proposals: list[dict],
|
|
) -> list[dict]:
|
|
context_block = ""
|
|
if similar_proposals:
|
|
context_block = "Here are similar historical proposals and their line items for reference:\n\n"
|
|
for i, sp in enumerate(similar_proposals[:5], 1):
|
|
context_block += (
|
|
f"--- Similar Proposal {i} (relevance: {sp['score']:.2f}) ---\n"
|
|
)
|
|
context_block += sp["content"] + "\n\n"
|
|
|
|
prompt = f"""You are a construction/facilities proposal estimator for Sea Haven Industries.
|
|
Based on the scope of work and similar historical proposals, generate a detailed list of line items
|
|
with quantities, units, and estimated pricing.
|
|
|
|
Service Category: {category}
|
|
Priority: {priority}
|
|
|
|
Scope of Work:
|
|
{scope}
|
|
|
|
{context_block}
|
|
|
|
Generate line items as a JSON array. Each item should have:
|
|
- description: clear description of the work/material
|
|
- quantity: numeric quantity
|
|
- unit: unit of measurement (e.g., "sq ft", "hours", "each", "linear ft")
|
|
- unitPrice: price per unit in dollars (or null if lump sum)
|
|
- totalPrice: total price for this line item in dollars
|
|
- pricingMode: "UnitPrice" if unit price provided, "TotalPrice" if lump sum
|
|
|
|
Respond ONLY with the JSON array, no additional text."""
|
|
|
|
try:
|
|
response = bedrock_runtime.invoke_model(
|
|
modelId=MODEL_ID,
|
|
contentType="application/json",
|
|
accept="application/json",
|
|
body=json.dumps(
|
|
{
|
|
"anthropic_version": "bedrock-2023-05-31",
|
|
"max_tokens": 4096,
|
|
"messages": [{"role": "user", "content": prompt}],
|
|
"temperature": 0.3,
|
|
}
|
|
),
|
|
)
|
|
|
|
response_body = json.loads(response["body"].read())
|
|
content = response_body["content"][0]["text"]
|
|
|
|
content = content.strip()
|
|
if content.startswith("```"):
|
|
content = content.split("\n", 1)[1]
|
|
content = content.rsplit("```", 1)[0]
|
|
|
|
line_items = json.loads(content)
|
|
return line_items if isinstance(line_items, list) else []
|
|
|
|
except Exception as e:
|
|
logger.error("Error generating line items: %s", e)
|
|
return []
|
|
|
|
|
|
def post_line_items(proposal_id: str, items: list[dict], existing_items: list[dict]):
|
|
if not items and not existing_items:
|
|
return
|
|
|
|
line_items_payload = []
|
|
|
|
# Preserve non-AI items (Manual, Vendor, Historical)
|
|
preserved = [li for li in existing_items if li.get("source") != "AI"]
|
|
for i, li in enumerate(preserved):
|
|
line_items_payload.append(
|
|
{
|
|
"id": li.get("id"),
|
|
"description": li["description"],
|
|
"quantity": float(li.get("quantity", 1)),
|
|
"unit": li.get("unit", "each"),
|
|
"unitPrice": li.get("unitPrice"),
|
|
"totalPrice": float(li.get("totalPrice", 0)),
|
|
"pricingMode": li.get("pricingMode", "TotalPrice"),
|
|
"sortOrder": i + 1,
|
|
"source": li.get("source", "Manual"),
|
|
}
|
|
)
|
|
|
|
# Add new AI-generated items after preserved ones
|
|
offset = len(line_items_payload)
|
|
for i, item in enumerate(items):
|
|
pricing_mode = item.get("pricingMode", "TotalPrice")
|
|
if pricing_mode not in ("UnitPrice", "TotalPrice", "Both"):
|
|
pricing_mode = "UnitPrice" if item.get("unitPrice") else "TotalPrice"
|
|
|
|
line_items_payload.append(
|
|
{
|
|
"id": None,
|
|
"description": item["description"],
|
|
"quantity": float(item.get("quantity", 1)),
|
|
"unit": item.get("unit", "each"),
|
|
"unitPrice": item.get("unitPrice"),
|
|
"totalPrice": float(item.get("totalPrice", 0)),
|
|
"pricingMode": pricing_mode,
|
|
"sortOrder": offset + i + 1,
|
|
"source": "AI",
|
|
}
|
|
)
|
|
|
|
try:
|
|
resp = _retry_request(
|
|
"PUT",
|
|
f"{API_BASE_URL}/api/proposals/{proposal_id}/line-items",
|
|
json={"lineItems": line_items_payload},
|
|
headers=_api_headers(),
|
|
timeout=15,
|
|
)
|
|
if resp.status_code not in (200, 201):
|
|
logger.error(
|
|
"Failed to post line items: %s %s", resp.status_code, resp.text
|
|
)
|
|
except Exception as e:
|
|
logger.error("Error posting line items: %s", e)
|
|
|
|
|
|
def store_similar_references(proposal_id: str, similar_proposals: list[dict]):
|
|
if not similar_proposals:
|
|
return
|
|
|
|
for sp in similar_proposals[:5]:
|
|
source_uri = sp.get("sourceUri", "")
|
|
library_item_id = source_uri.split("/")[-1] if source_uri else ""
|
|
if not library_item_id:
|
|
continue
|
|
|
|
try:
|
|
_retry_request(
|
|
"POST",
|
|
f"{API_BASE_URL}/api/proposals/{proposal_id}/similar-references",
|
|
json={
|
|
"referencedLibraryItemId": library_item_id,
|
|
"similarityScore": sp["score"],
|
|
},
|
|
headers=_api_headers(),
|
|
)
|
|
except Exception as e:
|
|
logger.error("Error storing similar reference: %s", e)
|
|
|
|
|
|
def update_status_to_in_review(proposal_id: str):
|
|
try:
|
|
_retry_request(
|
|
"PUT",
|
|
f"{API_BASE_URL}/api/proposals/{proposal_id}",
|
|
json={"status": "InReview"},
|
|
headers=_api_headers(),
|
|
)
|
|
except Exception as e:
|
|
logger.error("Error updating status: %s", e)
|
|
|
|
|
|
def _api_headers() -> dict:
|
|
headers = {"Content-Type": "application/json"}
|
|
api_key = _get_api_key()
|
|
if api_key:
|
|
headers["X-Internal-Api-Key"] = api_key
|
|
return headers
|
|
|
|
|
|
def _retry_request(
|
|
method: str, url: str, *, max_retries: int = 3, **kwargs
|
|
) -> httpx.Response:
|
|
kwargs.setdefault("timeout", 10)
|
|
for attempt in range(max_retries):
|
|
try:
|
|
resp = httpx.request(method, url, **kwargs)
|
|
if resp.status_code < 500:
|
|
return resp
|
|
except (httpx.ConnectError, httpx.ReadTimeout, httpx.WriteTimeout) as exc:
|
|
if attempt == max_retries - 1:
|
|
raise
|
|
logger.warning(
|
|
"Retryable error (attempt %d/%d): %s", attempt + 1, max_retries, exc
|
|
)
|
|
time.sleep(min(2**attempt, 4))
|
|
return resp # type: ignore[possibly-undefined]
|