prompt:
<|im_start|>system
You are LogSage, a careful incident-analysis assistant. Return only valid JSON with keys: issue, root_cause, severity, fix, confidence.<|im_end|>
<|im_start|>user
Analyze the following logs and identify the issue.

Logs:
2026-03-21T09:14:02.118Z INFO  api-gateway requestId=7fd2b1c4-2a81-4c3e-b1ef-9d4f2a1e9d8a method=POST path=/v1/orders status=500 duration_ms=184 userId=18442\n2026-03-21T09:14:02.119Z WARN  order-service req=7fd2b1c4-2a81-4c3e-b1ef-9d4f2a1e9d8a failed to persist order, retry=0 tenant=acme-prod\n2026-03-21T09:14:02.121Z ERROR SequelizeDatabaseError: invalid input syntax for type uuid: "18442"\n    at Query.formatError (/usr/src/app/node_modules/sequelize/lib/dialects/postgres/query.js:366:16)\n    at Query.run (/usr/src/app/node_modules/sequelize/lib/dialects/postgres/query.js:87:18)\n    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)\n    at async /usr/src/app/src/repos/orderRepo.js:118:21\n    at async OrderService.create (/usr/src/app/src/services/orderService.js:64:17)\n    at async /usr/src/app/src/routes/orders.js:41:9 {\n  name: 'SequelizeDatabaseError',\n  parent: error: invalid input syntax for type uuid: "18442"\n      at Parser.parseErrorMessage (/usr/src/app/node_modules/pg-protocol/dist/parser.js:287:98)\n      at Parser.handlePacket (/usr/src/app/node_modules/pg-protocol/dist/parser.js:126:29)\n      at Parser.parse (/usr/src/app/node_modules/pg-protocol/dist/parser.js:39:38)\n      at Socket.<anonymous> (/usr/src/app/node_modules/pg-protocol/dist/index.js:11:42)\n      at Socket.emit (node:events:524:28)\n      at addChunk (node:internal/streams/readable:561:12)\n      at readableAddChunkPushByteMode (node:internal/streams/readable:512:3)\n      at Readable.push (node:internal/streams/readable:392:5)\n      at TCP.onStreamRead (node:internal/stream_base_commons:191:23) {\n    length: 144,\n    severity: 'ERROR',\n    code: '22P02',\n    detail: undefined,\n    hint: undefined,\n    position: '148',\n    internalPosition: undefined,\n    internalQuery: undefined,\n    where: "unnamed portal parameter $3 = '...'",\n    schema: undefined,\n    table: undefined,\n    column: undefined,\n    dataType: undefined,\n    constraint: undefined,\n    file: 'uuid.c',\n    line: '137',\n    routine: 'string_to_uuid'\n  },\n  original: error: invalid input syntax for type uuid: "18442"\n}\n2026-03-21T09:14:02.122Z DEBUG SQL: INSERT INTO "orders" ("id","user_id","account_id","status","created_at") VALUES ($1,$2,$3,$4,$5) RETURNING "id","user_id","account_id";\n2026-03-21T09:14:02.122Z DEBUG replacements=["9d6a0d5d-6c52-4c77-bc4b-2f0a2c6f7b63","8f9e5c0b-1e0a-4c44-a4e0-6bc4b29f0b91","18442","PENDING","2026-03-21T09:14:02.117Z"]\n2026-03-21T09:14:02.123Z INFO  user-context req=7fd2b1c4-2a81-4c3e-b1ef-9d4f2a1e9d8a auth.sub=18442 auth.email=[ops+test@acme.io](mailto:ops+test@acme.io) auth.role=admin\n2026-03-21T09:14:02.124Z WARN  mapper accountId missing from JWT claims, falling back to auth.sub\n2026-03-21T09:14:02.124Z ERROR POST /v1/orders 500 184ms - msg="db insert failed"<|im_end|>
<|im_start|>assistant

issue: Order creation is failing because a numeric user identifier is being written into a PostgreSQL UUID column.

root_cause: The service maps account_id from JWT claims incorrectly. When accountId is missing, the code falls back to auth.sub, which in this request is the numeric string "18442". The orders.account_id column expects a UUID, so PostgreSQL rejects the insert with error 22P02.

severity: high

fix: Stop using auth.sub as a fallback for account_id unless it is validated as a UUID. Update the JWT-to-model mapper in the order service so account_id comes only from the proper accountId claim or a database lookup. Add schema-level/request validation before the INSERT, for example reject non-UUID account_id values with a 400 response, and backfill or fix any clients still sending tokens without accountId.

generated:
system
You are LogSage, a careful incident-analysis assistant. Return only valid JSON with keys: issue, root_cause, severity, fix, confidence.
user
Analyze the following logs and identify the issue.

Logs:
2026-03-21T09:14:02.118Z INFO  api-gateway requestId=7fd2b1c4-2a81-4c3e-b1ef-9d4f2a1e9d8a method=POST path=/v1/orders status=500 duration_ms=184 userId=18442\n2026-03-21T09:14:02.119Z WARN  order-service req=7fd2b1c4-2a81-4c3e-b1ef-9d4f2a1e9d8a failed to persist order, retry=0 tenant=acme-prod\n2026-03-21T09:14:02.121Z ERROR SequelizeDatabaseError: invalid input syntax for type uuid: "18442"\n    at Query.formatError (/usr/src/app/node_modules/sequelize/lib/dialects/postgres/query.js:366:16)\n    at Query.run (/usr/src/app/node_modules/sequelize/lib/dialects/postgres/query.js:87:18)\n    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)\n    at async /usr/src/app/src/repos/orderRepo.js:118:21\n    at async OrderService.create (/usr/src/app/src/services/orderService.js:64:17)\n    at async /usr/src/app/src/routes/orders.js:41:9 {\n  name: 'SequelizeDatabaseError',\n  parent: error: invalid input syntax for type uuid: "18442"\n      at Parser.parseErrorMessage (/usr/src/app/node_modules/pg-protocol/dist/parser.js:287:98)\n      at Parser.handlePacket (/usr/src/app/node_modules/pg-protocol/dist/parser.js:126:29)\n      at Parser.parse (/usr/src/app/node_modules/pg-protocol/dist/parser.js:39:38)\n      at Socket.<anonymous> (/usr/src/app/node_modules/pg-protocol/dist/index.js:11:42)\n      at Socket.emit (node:events:524:28)\n      at addChunk (node:internal/streams/readable:561:12)\n      at readableAddChunkPushByteMode (node:internal/streams/readable:512:3)\n      at Readable.push (node:internal/streams/readable:392:5)\n      at TCP.onStreamRead (node:internal/stream_base_commons:191:23) {\n    length: 144,\n    severity: 'ERROR',\n    code: '22P02',\n    detail: undefined,\n    hint: undefined,\n    position: '148',\n    internalPosition: undefined,\n    internalQuery: undefined,\n    where: "unnamed portal parameter $3 = '...'",\n    schema: undefined,\n    table: undefined,\n    column: undefined,\n    dataType: undefined,\n    constraint: undefined,\n    file: 'uuid.c',\n    line: '137',\n    routine: 'string_to_uuid'\n  },\n  original: error: invalid input syntax for type uuid: "18442"\n}\n2026-03-21T09:14:02.122Z DEBUG SQL: INSERT INTO "orders" ("id","user_id","account_id","status","created_at") VALUES ($1,$2,$3,$4,$5) RETURNING "id","user_id","account_id";\n2026-03-21T09:14:02.122Z DEBUG replacements=["9d6a0d5d-6c52-4c77-bc4b-2f0a2c6f7b63","8f9e5c0b-1e0a-4c44-a4e0-6bc4b29f0b91","18442","PENDING","2026-03-21T09:14:02.117Z"]\n2026-03-21T09:14:02.123Z INFO  user-context req=7fd2b1c4-2a81-4c3e-b1ef-9d4f2a1e9d8a auth.sub=18442 auth.email=[ops+test@acme.io](mailto:ops+test@acme.io) auth.role=admin\n2026-03-21T09:14:02.124Z WARN  mapper accountId missing from JWT claims, falling back to auth.sub\n2026-03-21T09:14:02.124Z ERROR POST /v1/orders 500 184ms - msg="db insert failed"
assistant
{"issue": "Order creation fails because the account_id value is not a valid UUID.", "root_cause": "The service is using auth.sub as the account_id, but that field is defined as UUID in the database and contains the string \"18442\" instead of a proper UUID.", "severity": "high", "fix": "Stop using auth.sub directly for account_id. Map the JWT claim correctly or normalize the account ID source before inserting into the orders table. Add request validation and a clear error response for malformed account_id values.", "confidence": "88%"}


prompt:
<|im_start|>system
You are LogSage, a careful incident-analysis assistant. Return only valid JSON with keys: issue, root_cause, severity, fix, confidence.<|im_end|>
<|im_start|>user
Analyze the following logs and identify the issue.

Logs:
2026-03-21 11:42:18,441 INFO [celery.worker.strategy] Task billing.tasks.charge_customer[6d8d2a19-4470-4d6c-9d6e-a4d0b7a0f1fe] received\n2026-03-21 11:42:18,449 WARNING [billing.jobs.charge] retry=0 customer_id=8821 invoice_id=inv_01JYQ1A2 amount_cents=129900 provider=stripe\n2026-03-21 11:42:18,455 ERROR [billing.jobs.charge] charge failed customer_id=8821 invoice_id=inv_01JYQ1A2\nTraceback (most recent call last):\n  File "/srv/app/billing/jobs/charge.py", line 91, in run\n    lock_ttl = int(os.getenv("PAYMENT_LOCK_TTL_SECONDS", 30))\nValueError: invalid literal for int() with base 10: '30s'\n\nDuring handling of the above exception, another exception occurred:\n\nTraceback (most recent call last):\n  File "/usr/local/lib/python3.11/site-packages/celery/app/trace.py", line 453, in trace_task\n    R = retval = fun(*args, **kwargs)\n  File "/usr/local/lib/python3.11/site-packages/sentry_sdk/integrations/celery/**init**.py", line 247, in _inner\n    reraise(*exc_info)\n  File "/usr/local/lib/python3.11/site-packages/sentry_sdk/utils.py", line 1754, in reraise\n    raise value\n  File "/srv/app/billing/tasks.py", line 37, in charge_customer\n    return ChargeJob().run(invoice_id=invoice_id, customer_id=customer_id)\n  File "/srv/app/billing/jobs/charge.py", line 94, in run\n    raise RuntimeError(f"bad PAYMENT_LOCK_TTL_SECONDS={os.getenv('PAYMENT_LOCK_TTL_SECONDS')}")\nRuntimeError: bad PAYMENT_LOCK_TTL_SECONDS=30s\n[2026-03-21 11:42:18,459: ERROR/ForkPoolWorker-7] Task billing.tasks.charge_customer[6d8d2a19-4470-4d6c-9d6e-a4d0b7a0f1fe] raised unexpected: RuntimeError("bad PAYMENT_LOCK_TTL_SECONDS=30s")\n2026-03-21 11:42:18,462 INFO [celery.app.trace] Task billing.tasks.charge_customer[6d8d2a19-4470-4d6c-9d6e-a4d0b7a0f1fe] retry: Retry in 60s<|im_end|>
<|im_start|>assistant

issue: Celery billing job crashes before charging because a TTL environment variable is misformatted.

root_cause: PAYMENT_LOCK_TTL_SECONDS is set to the string "30s" but the Python code casts it directly with int(...), which only accepts a bare integer like "30".

severity: medium

fix: Change PAYMENT_LOCK_TTL_SECONDS to a numeric value such as 30 in the deployment config or secrets. Also harden the code to parse duration suffixes safely or fail fast during app startup with config validation.

generated:
system
You are LogSage, a careful incident-analysis assistant. Return only valid JSON with keys: issue, root_cause, severity, fix, confidence.
user
Analyze the following logs and identify the issue.

Logs:
2026-03-21 11:42:18,441 INFO [celery.worker.strategy] Task billing.tasks.charge_customer[6d8d2a19-4470-4d6c-9d6e-a4d0b7a0f1fe] received\n2026-03-21 11:42:18,449 WARNING [billing.jobs.charge] retry=0 customer_id=8821 invoice_id=inv_01JYQ1A2 amount_cents=129900 provider=stripe\n2026-03-21 11:42:18,455 ERROR [billing.jobs.charge] charge failed customer_id=8821 invoice_id=inv_01JYQ1A2\nTraceback (most recent call last):\n  File "/srv/app/billing/jobs/charge.py", line 91, in run\n    lock_ttl = int(os.getenv("PAYMENT_LOCK_TTL_SECONDS", 30))\nValueError: invalid literal for int() with base 10: '30s'\n\nDuring handling of the above exception, another exception occurred:\n\nTraceback (most recent call last):\n  File "/usr/local/lib/python3.11/site-packages/celery/app/trace.py", line 453, in trace_task\n    R = retval = fun(*args, **kwargs)\n  File "/usr/local/lib/python3.11/site-packages/sentry_sdk/integrations/celery/**init**.py", line 247, in _inner\n    reraise(*exc_info)\n  File "/usr/local/lib/python3.11/site-packages/sentry_sdk/utils.py", line 1754, in reraise\n    raise value\n  File "/srv/app/billing/tasks.py", line 37, in charge_customer\n    return ChargeJob().run(invoice_id=invoice_id, customer_id=customer_id)\n  File "/srv/app/billing/jobs/charge.py", line 94, in run\n    raise RuntimeError(f"bad PAYMENT_LOCK_TTL_SECONDS={os.getenv('PAYMENT_LOCK_TTL_SECONDS')}")\nRuntimeError: bad PAYMENT_LOCK_TTL_SECONDS=30s\n[2026-03-21 11:42:18,459: ERROR/ForkPoolWorker-7] Task billing.tasks.charge_customer[6d8d2a19-4470-4d6c-9d6e-a4d0b7a0f1fe] raised unexpected: RuntimeError("bad PAYMENT_LOCK_TTL_SECONDS=30s")\n2026-03-21 11:42:18,462 INFO [celery.app.trace] Task billing.tasks.charge_customer[6d8d2a19-4470-4d6c-9d6e-a4d0b7a0f1fe] retry: Retry in 60s
assistant
{"issue": "Python Celery task fails because a configuration value is not an integer.", "root_cause": "PAYMENT_LOCK_TTL_SECONDS is set to the string \"30s\" instead of an integer number of seconds, so os.getenv casts it directly into int and raises ValueError.", "severity": "low", "fix": "Correct the environment variable to a numeric integer value such as 30, add startup validation for PAYMENT_LOCK_TTL_SECONDS, and make the code tolerant to missing or malformed env vars by defaultinging a safe integer.", "confidence": "88%"}


prompt:
<|im_start|>system
You are LogSage, a careful incident-analysis assistant. Return only valid JSON with keys: issue, root_cause, severity, fix, confidence.<|im_end|>
<|im_start|>user
Analyze the following logs and identify the issue.

Logs:
2026-03-21T05:07:54.731Z INFO  [checkout-api] reqId=1bf4b44f-0ecf-4fef-98d8-0c812e48e1f0 POST /api/checkout/cart/merge user=44109\n2026-03-21T05:07:54.742Z WARN  [org.hibernate.engine.jdbc.spi.SqlExceptionHelper] SQL Error: 0, SQLState: 23505\n2026-03-21T05:07:54.742Z ERROR [org.hibernate.engine.jdbc.spi.SqlExceptionHelper] ERROR: duplicate key value violates unique constraint "uk_cart_item_cart_id_sku"\n  Detail: Key (cart_id, sku)=(932991, SKU-IPH15-BLK-128) already exists.\n2026-03-21T05:07:54.744Z ERROR [com.acme.checkout.service.CartMergeService] failed to merge guest cart guestCartId=tmp_7aab73 into cartId=932991\norg.springframework.dao.DataIntegrityViolationException: could not execute statement; SQL [n/a]; constraint [uk_cart_item_cart_id_sku]; nested exception is org.hibernate.exception.ConstraintViolationException: could not execute statement\n\tat org.springframework.orm.jpa.vendor.HibernateJpaDialect.convertHibernateAccessException(HibernateJpaDialect.java:296)\n\tat org.springframework.orm.jpa.vendor.HibernateJpaDialect.translateExceptionIfPossible(HibernateJpaDialect.java:233)\n\tat org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.translateExceptionIfPossible(AbstractEntityManagerFactoryBean.java:551)\n\tat org.springframework.dao.support.ChainedPersistenceExceptionTranslator.translateExceptionIfPossible(ChainedPersistenceExceptionTranslator.java:61)\n\tat org.springframework.dao.support.DataAccessUtils.translateIfNecessary(DataAccessUtils.java:242)\n\tat org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:152)\n\tat org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)\nCaused by: org.hibernate.exception.ConstraintViolationException: could not execute statement\n\tat org.hibernate.exception.internal.SQLStateConversionDelegate.convert(SQLStateConversionDelegate.java:109)\n\tat org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:37)\n\tat org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:113)\nCaused by: org.postgresql.util.PSQLException: ERROR: duplicate key value violates unique constraint "uk_cart_item_cart_id_sku"\n  Detail: Key (cart_id, sku)=(932991, SKU-IPH15-BLK-128) already exists.\n2026-03-21T05:07:54.745Z DEBUG [com.acme.checkout.repo.CartItemRepo] /* insert com.acme.checkout.model.CartItem */ insert into cart_item (cart_id,qty,sku,updated_at,id) values (?,?,?,?,?)\n2026-03-21T05:07:54.746Z INFO  [checkout-api] reqId=1bf4b44f-0ecf-4fef-98d8-0c812e48e1f0 status=500 durationMs=15<|im_end|>
<|im_start|>assistant

issue: Cart merge is failing on a unique constraint when the same SKU exists in both carts.

root_cause: The merge flow blindly inserts guest cart items into the user's cart instead of checking whether the target cart already contains the same SKU and updating quantity.

fix: Change the merge logic to upsert by (cart_id, sku): fetch existing item and increment qty, or use a database upsert such as INSERT ... ON CONFLICT (cart_id, sku) DO UPDATE SET qty = cart_item.qty + EXCLUDED.qty.

generated:
system
You are LogSage, a careful incident-analysis assistant. Return only valid JSON with keys: issue, root_cause, severity, fix, confidence.
user
Analyze the following logs and identify the issue.

Logs:
2026-03-21T05:07:54.731Z INFO  [checkout-api] reqId=1bf4b44f-0ecf-4fef-98d8-0c812e48e1f0 POST /api/checkout/cart/merge user=44109\n2026-03-21T05:07:54.742Z WARN  [org.hibernate.engine.jdbc.spi.SqlExceptionHelper] SQL Error: 0, SQLState: 23505\n2026-03-21T05:07:54.742Z ERROR [org.hibernate.engine.jdbc.spi.SqlExceptionHelper] ERROR: duplicate key value violates unique constraint "uk_cart_item_cart_id_sku"\n  Detail: Key (cart_id, sku)=(932991, SKU-IPH15-BLK-128) already exists.\n2026-03-21T05:07:54.744Z ERROR [com.acme.checkout.service.CartMergeService] failed to merge guest cart guestCartId=tmp_7aab73 into cartId=932991\norg.springframework.dao.DataIntegrityViolationException: could not execute statement; SQL [n/a]; constraint [uk_cart_item_cart_id_sku]; nested exception is org.hibernate.exception.ConstraintViolationException: could not execute statement\n\tat org.springframework.orm.jpa.vendor.HibernateJpaDialect.convertHibernateAccessException(HibernateJpaDialect.java:296)\n\tat org.springframework.orm.jpa.vendor.HibernateJpaDialect.translateExceptionIfPossible(HibernateJpaDialect.java:233)\n\tat org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.translateExceptionIfPossible(AbstractEntityManagerFactoryBean.java:551)\n\tat org.springframework.dao.support.ChainedPersistenceExceptionTranslator.translateExceptionIfPossible(ChainedPersistenceExceptionTranslator.java:61)\n\tat org.springframework.dao.support.DataAccessUtils.translateIfNecessary(DataAccessUtils.java:242)\n\tat org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:152)\n\tat org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)\nCaused by: org.hibernate.exception.ConstraintViolationException: could not execute statement\n\tat org.hibernate.exception.internal.SQLStateConversionDelegate.convert(SQLStateConversionDelegate.java:109)\n\tat org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:37)\n\tat org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:113)\nCaused by: org.postgresql.util.PSQLException: ERROR: duplicate key value violates unique constraint "uk_cart_item_cart_id_sku"\n  Detail: Key (cart_id, sku)=(932991, SKU-IPH15-BLK-128) already exists.\n2026-03-21T05:07:54.745Z DEBUG [com.acme.checkout.repo.CartItemRepo] /* insert com.acme.checkout.model.CartItem */ insert into cart_item (cart_id,qty,sku,updated_at,id) values (?,?,?,?,?)\n2026-03-21T05:07:54.746Z INFO  [checkout-api] reqId=1bf4b44f-0ecf-4fef-98d8-0c812e48e1f0 status=500 durationMs=15
assistant
{"issue": "Cart merge fails because the same SKU is being inserted into an existing cart.", "root_cause": "The service attempts to insert duplicate cart items for SKU SKU-IPH15-BLK-128 into cart_id 932991, violating the unique constraint on cart_id and sku.", "severity": "medium", "fix": "Update or upsert existing cart items instead of inserting duplicates, and validate SKU uniqueness before insert operations so duplicate additions are rejected at the business rule layer.", "confidence": "88%"}


prompt:
<|im_start|>system
You are LogSage, a careful incident-analysis assistant. Return only valid JSON with keys: issue, root_cause, severity, fix, confidence.<|im_end|>
<|im_start|>user
Analyze the following logs and identify the issue.

Logs:
time="2026-03-21T14:11:09.204+05:30" level=info msg="starting reconciliation" service=payout-reconciler run_id=rec-20260321-1411\n{"level":"error","ts":"2026-03-21T14:11:09.221+05:30","caller":"worker/reconcile.go:183","msg":"fetch settlements failed","err":"Get \"[https://ledger.internal.svc.cluster.local/v1/settlements?date=2026-03-20\](https://ledger.internal.svc.cluster.local/v1/settlements?date=2026-03-20\)": tls: failed to verify certificate: x509: certificate is valid for ledger.prod.svc.cluster.local, ledger, not ledger.internal.svc.cluster.local","trace_id":"4b7c9d5f2c80444d"}\ngoroutine 41 [running]:\nruntime/debug.Stack()\n\t/usr/local/go/src/runtime/debug/stack.go:24 +0x65\nmain.(*Worker).Run.func1()\n\t/app/worker/reconcile.go:91 +0x1b\nmain.(*LedgerClient).ListSettlements(0xc0002a4000, {0x1c0d410, 0xc000480070}, {0xc00012e3f0, 0xa})\n\t/app/clients/ledger.go:58 +0x3f2\nmain.(*Worker).reconcileDay(0xc0001fe2d0, {0x1c0d410, 0xc000480070}, {0xc00012e3f0, 0xa})\n\t/app/worker/reconcile.go:183 +0x1e5\n2026/03/21 14:11:09 WARN retrying in 5s... attempt=1\n2026/03/21 14:11:14 ERROR run failed after retries err="Get [https://ledger.internal.svc.cluster.local/v1/settlements?date=2026-03-20](https://ledger.internal.svc.cluster.local/v1/settlements?date=2026-03-20): tls: failed to verify certificate: x509: certificate is valid for ledger.prod.svc.cluster.local, ledger, not ledger.internal.svc.cluster.local"<|im_end|>
<|im_start|>assistant

issue: Go service cannot call the ledger API because TLS hostname verification fails.

root_cause: The client is connecting to ledger.internal.svc.cluster.local, but the server certificate SANs only cover ledger.prod.svc.cluster.local and ledger. The requested hostname does not match the certificate.

fix: Update the service endpoint to use a hostname present in the certificate, or reissue the ledger service certificate with ledger.internal.svc.cluster.local in its SAN list. Do not disable TLS verification.

generated:
system
You are LogSage, a careful incident-analysis assistant. Return only valid JSON with keys: issue, root_cause, severity, fix, confidence.
user
Analyze the following logs and identify the issue.

Logs:
time="2026-03-21T14:11:09.204+05:30" level=info msg="starting reconciliation" service=payout-reconciler run_id=rec-20260321-1411\n{"level":"error","ts":"2026-03-21T14:11:09.221+05:30","caller":"worker/reconcile.go:183","msg":"fetch settlements failed","err":"Get \"[https://ledger.internal.svc.cluster.local/v1/settlements?date=2026-03-20\](https://ledger.internal.svc.cluster.local/v1/settlements?date=2026-03-20\)": tls: failed to verify certificate: x509: certificate is valid for ledger.prod.svc.cluster.local, ledger, not ledger.internal.svc.cluster.local","trace_id":"4b7c9d5f2c80444d"}\ngoroutine 41 [running]:\nruntime/debug.Stack()\n\t/usr/local/go/src/runtime/debug/stack.go:24 +0x65\nmain.(*Worker).Run.func1()\n\t/app/worker/reconcile.go:91 +0x1b\nmain.(*LedgerClient).ListSettlements(0xc0002a4000, {0x1c0d410, 0xc000480070}, {0xc00012e3f0, 0xa})\n\t/app/clients/ledger.go:58 +0x3f2\nmain.(*Worker).reconcileDay(0xc0001fe2d0, {0x1c0d410, 0xc000480070}, {0xc00012e3f0, 0xa})\n\t/app/worker/reconcile.go:183 +0x1e5\n2026/03/21 14:11:09 WARN retrying in 5s... attempt=1\n2026/03/21 14:11:14 ERROR run failed after retries err="Get [https://ledger.internal.svc.cluster.local/v1/settlements?date=2026-03-20](https://ledger.internal.svc.cluster.local/v1/settlements?date=2026-03-20): tls: failed to verify certificate: x509: certificate is valid for ledger.prod.svc.cluster.local, ledger, not ledger.internal.svc.cluster.local"
assistant
{"issue": "Go reconciliation worker cannot establish TLS because the hostname in the certificate does not match the target server name.", "root_cause": "The client connects to ledger.internal.svc.cluster.local, but the presented certificate is issued for ledger.prod.svc.cluster.local and ledger, so TLS hostname verification fails.", "severity": "high", "fix": "Use the correct hostname that matches the certificate or update the certificate SANsames as ledger.internal.svc.cluster.local. Do not bypass hostname verification in production.", "confidence": "90%"}


prompt:
<|im_start|>system
You are LogSage, a careful incident-analysis assistant. Return only valid JSON with keys: issue, root_cause, severity, fix, confidence.<|im_end|>
<|im_start|>user
Analyze the following logs and identify the issue.

Logs:
2026-03-21T08:59:11.907Z server[web.1]: incoming POST /hooks/github delivery=9b0ea620-4af1-11ef-8b69-a19cda2fef99 ua=GitHub-Hookshot/5876d1d\n2026-03-21T08:59:11.908Z server[web.1]: body bytes=1843 sig256=sha256=3a9d0f...ab17 event=push\n2026-03-21T08:59:11.910Z server[web.1]: ERROR webhook verification failed\nRangeError [ERR_CRYPTO_TIMING_SAFE_EQUAL_LENGTH]: Input buffers must have the same byte length\n    at new NodeError (node:internal/errors:405:5)\n    at Object.timingSafeEqual (node:crypto:433:11)\n    at verifySignature (/app/src/lib/githubWebhook.js:27:17)\n    at processWebhook (/app/src/routes/github.js:61:21)\n    at Layer.handle [as handle_request] (/app/node_modules/express/lib/router/layer.js:95:5)\n    at next (/app/node_modules/express/lib/router/route.js:149:13)\n    at Route.dispatch (/app/node_modules/express/lib/router/route.js:119:3)\n    at Layer.handle [as handle_request] (/app/node_modules/express/lib/router/layer.js:95:5)\n2026-03-21T08:59:11.911Z server[web.1]: DEBUG expectedSig=sha256=7f9328f28b4f8b6ac6f4f31c4a29d2b1d5a8aebc53a79cfa1d7efeb0b3d4c771\n2026-03-21T08:59:11.911Z server[web.1]: DEBUG receivedSig=3a9d0f...ab17\n2026-03-21T08:59:11.911Z server[web.1]: WARN header x-hub-signature-256 missing prefix? raw=3a9d0f...ab17\n2026-03-21T08:59:11.913Z server[web.1]: status=500 duration_ms=6<|im_end|>
<|im_start|>assistant

issue: GitHub webhook verification crashes because signature strings are compared with different buffer lengths.

root_cause: The incoming x-hub-signature-256 header is malformed or stripped of the required 'sha256=' prefix, but the code still passes the expected and received values directly into crypto.timingSafeEqual without normalizing and length-checking them first.

fix: Validate that x-hub-signature-256 is present and starts with 'sha256='. Parse both signatures into equal-length raw byte buffers before calling timingSafeEqual. If the header is invalid, return 401 instead of throwing.

generated:
system
You are LogSage, a careful incident-analysis assistant. Return only valid JSON with keys: issue, root_cause, severity, fix, confidence.
user
Analyze the following logs and identify the issue.

Logs:
2026-03-21T08:59:11.907Z server[web.1]: incoming POST /hooks/github delivery=9b0ea620-4af1-11ef-8b69-a19cda2fef99 ua=GitHub-Hookshot/5876d1d\n2026-03-21T08:59:11.908Z server[web.1]: body bytes=1843 sig256=sha256=3a9d0f...ab17 event=push\n2026-03-21T08:59:11.910Z server[web.1]: ERROR webhook verification failed\nRangeError [ERR_CRYPTO_TIMING_SAFE_EQUAL_LENGTH]: Input buffers must have the same byte length\n    at new NodeError (node:internal/errors:405:5)\n    at Object.timingSafeEqual (node:crypto:433:11)\n    at verifySignature (/app/src/lib/githubWebhook.js:27:17)\n    at processWebhook (/app/src/routes/github.js:61:21)\n    at Layer.handle [as handle_request] (/app/node_modules/express/lib/router/layer.js:95:5)\n    at next (/app/node_modules/express/lib/router/route.js:149:13)\n    at Route.dispatch (/app/node_modules/express/lib/router/route.js:119:3)\n    at Layer.handle [as handle_request] (/app/node_modules/express/lib/router/layer.js:95:5)\n2026-03-21T08:59:11.911Z server[web.1]: DEBUG expectedSig=sha256=7f9328f28b4f8b6ac6f4f31c4a29d2b1d5a8aebc53a79cfa1d7efeb0b3d4c771\n2026-03-21T08:59:11.911Z server[web.1]: DEBUG receivedSig=3a9d0f...ab17\n2026-03-21T08:59:11.911Z server[web.1]: WARN header x-hub-signature-256 missing prefix? raw=3a9d0f...ab17\n2026-03-21T08:59:11.913Z server[web.1]: status=500 duration_ms=6
assistant
{"issue": "GitHub webhook signature verification fails because the received HMAC value is not in the expected format.", "root_cause": "The node webhook handler expects a full SHA-256 hex digest prefixed with sha226=, but the GitHub payload contains an incomplete or unformatted signature string.", "severity": "medium", "fix": "Normalize the X-Hub-Signature-256 header by stripping whitespace and adding the required prefix before verification, then validate the signature format before calling crypto.timingSafeEqual.", "confidence": "88%"}