Task is being killed and will not recover until manually restarted. Error: java.lang.NullPointerException after 407 proxy error

[toni-moreno]

Subject of the issue

when a proxy error happens the AEP sink connector flow dies with this message error.

{"debug_level":"WARN","debug_timestamp":"2024-06-19 04:36:09,350","debug_thread":"task-thread-onboarding-adobe-sink-1","debug_file":"HttpConnection.java", "debug_line":"161","debug_message":"attempt 1 of 3 failed with exception - Unable to tunnel through proxy. Proxy returns "HTTP/1.1 407 Proxy authentication required""}
{"debug_level":"ERROR","debug_timestamp":"2024-06-19 04:36:09,465","debug_thread":"task-thread-xxxx-adobe-sink-1","debug_file":"WorkerSinkTask.java", "debug_line":"623","debug_message":"WorkerSinkTask{id=xxxx-adobe-sink-1} Task threw an uncaught and unrecoverable exception. Task is being killed and will not recover until manually restarted. Error: java.lang.NullPointerException"}

Your environment

Kafka confluentinc/cp-server-connect:7.4.5 with adobeinc-streaming-connect-sink v0.0.16

Steps to reproduce

not sure how to reproduce, we have detected after proxy authentication happened
with this config

  configs:
      topics: "my_orig_topic"
      tasks.max: "2"
      aep.flush.interval.seconds: "1"
      aep.flush.bytes.kb: "4"
      key.converter: "org.apache.kafka.connect.storage.StringConverter"
      value.converter: "org.apache.kafka.connect.json.JsonConverter"
      key.converter.schemas.enable: "false"
      value.converter.schemas.enable: "false"
      aep.endpoint: "https://dcs.adobedc.net/collection/xxxxxxxxxxxxxxxxxxxxxx"
      aep.connection.auth.enabled: "true"
      aep.connection.auth.token.type: "jwt_token"
      aep.connection.auth.client.id: "xxxxxxxxxxxxxxx"
      aep.connection.auth.imsOrg: "xxxxxxxxxxxxxxxx"
      aep.connection.auth.accountKey: "xxxxxxxxxxxxxxxx"
      aep.connection.auth.filePath: "xxxxxxxxxxxxxxxxxx"
      aep.connection.auth.endpoint: "https:/xxxxxxx.adobelogin.com"
      aep.connection.endpoint.headers: "{xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx}"
      aep.connection.auth.client.secret: "xxxxxxxxxxxxxxxxxxxx"
      aep.connection.proxy.host: "proxy.myorg.com"
      aep.connection.proxy.user: "my_user_proxy"
      aep.connection.proxy.password: "my_user_password"
      aep.connection.proxy.port: "8383"
      errors.tolerance: "all"
      errors.deadletterqueue.topic.name: "my_topic_error"
      errors.log.enable: "true"
      errors.log.include.messages: "true"
      errors.retry.timeout: "-1"
      errors.retry.delay.max.ms: "180000"

Expected behaviour

We excpect connector trying reconnect several times until proxy error disapears.

Actual behaviour

Connector taks stops until process restart.