{"prompt": "<|im_start|>system\nYou are LogSage, a careful incident-analysis assistant. Return only valid JSON with keys: issue, root_cause, severity, fix, confidence.<|im_end|>\n<|im_start|>user\nAnalyze the following logs and identify the issue.\n\nLogs:\n2026-03-21T09:14:02.118Z 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|>\n<|im_start|>assistant\n", "expected": {"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.", "confidence": "98%"}, "generated": "system\nYou are LogSage, a careful incident-analysis assistant. Return only valid JSON with keys: issue, root_cause, severity, fix, confidence.\nuser\nAnalyze the following logs and identify the issue.\n\nLogs:\n2026-03-21T09:14:02.118Z 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\"\nassistant\n{\"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\nYou are LogSage, a careful incident-analysis assistant. Return only valid JSON with keys: issue, root_cause, severity, fix, confidence.<|im_end|>\n<|im_start|>user\nAnalyze the following logs and identify the issue.\n\nLogs:\n2026-03-21 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|>\n<|im_start|>assistant\n", "expected": {"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.", "confidence": "99%"}, "generated": "system\nYou are LogSage, a careful incident-analysis assistant. Return only valid JSON with keys: issue, root_cause, severity, fix, confidence.\nuser\nAnalyze the following logs and identify the issue.\n\nLogs:\n2026-03-21 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\nassistant\n{\"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\nYou are LogSage, a careful incident-analysis assistant. Return only valid JSON with keys: issue, root_cause, severity, fix, confidence.<|im_end|>\n<|im_start|>user\nAnalyze the following logs and identify the issue.\n\nLogs:\n2026-03-21T05:07:54.731Z 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|>\n<|im_start|>assistant\n", "expected": {"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.", "severity": "medium", "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.", "confidence": "97%"}, "generated": "system\nYou are LogSage, a careful incident-analysis assistant. Return only valid JSON with keys: issue, root_cause, severity, fix, confidence.\nuser\nAnalyze the following logs and identify the issue.\n\nLogs:\n2026-03-21T05:07:54.731Z 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\nassistant\n{\"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\nYou are LogSage, a careful incident-analysis assistant. Return only valid JSON with keys: issue, root_cause, severity, fix, confidence.<|im_end|>\n<|im_start|>user\nAnalyze the following logs and identify the issue.\n\nLogs:\ntime=\"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|>\n<|im_start|>assistant\n", "expected": {"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.", "severity": "high", "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.", "confidence": "99%"}, "generated": "system\nYou are LogSage, a careful incident-analysis assistant. Return only valid JSON with keys: issue, root_cause, severity, fix, confidence.\nuser\nAnalyze the following logs and identify the issue.\n\nLogs:\ntime=\"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\"\nassistant\n{\"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\nYou are LogSage, a careful incident-analysis assistant. Return only valid JSON with keys: issue, root_cause, severity, fix, confidence.<|im_end|>\n<|im_start|>user\nAnalyze the following logs and identify the issue.\n\nLogs:\n2026-03-21T08:59:11.907Z 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|>\n<|im_start|>assistant\n", "expected": {"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.", "severity": "medium", "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.", "confidence": "96%"}, "generated": "system\nYou are LogSage, a careful incident-analysis assistant. Return only valid JSON with keys: issue, root_cause, severity, fix, confidence.\nuser\nAnalyze the following logs and identify the issue.\n\nLogs:\n2026-03-21T08:59:11.907Z 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\nassistant\n{\"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%\"}"}