hyperboria/nexus/pipe/README.md

Nexus Pipe

Pipe processes Kafka queue of operations. This version has cut configs subdirectory due to hard reliance of configs on the network infrastructure you are using. You have to write your own configs taking example below into account.

Sample configs/base.yaml

---
log_path: '/var/log/nexus-pipe/{{ ENV_TYPE }}'
pipe:
  brokers: |
    kafka-0.example.net,
    kafka-1.example.net    
  schema:
    - consumers:
        - class: nexus.pipe.consumers.CrossReferencesBulkConsumer
          topics:
            - name: cross_references
              workers: 4
      group_id: pipe
      processors:
        - class: nexus.pipe.processors.CrossReferencesProcessor
          kwargs:
            brokers: |
              kafka-0.example.net,
              kafka-1.example.net              
            database:
              database: nexus
              host: postgres.example.net
              password: '{{ DATABASE_PASSWORD }}'
              username: '{{ DATABASE_USERNAME }}'
    - consumers:
        - class: nexus.pipe.consumers.DocumentOperationsJsonConsumer
          topics:
            - name: operations
              workers: 2
        - class: nexus.pipe.consumers.DocumentOperationsConsumer
          topics:
            - name: operations_binary_hp
              workers: 4
            - name: operations_binary
              workers: 14
      group_id: pipe
      processors:
        - class: nexus.pipe.processors.ActionProcessor
          kwargs:
            actions:
              - class: nexus.actions.FillDocumentOperationUpdateDocumentScimagPbFromExternalSourceAction
                kwargs:
                  crossref:
                    rps: 50
                    user_agent: 'ScienceLegion/1.0 (Linux x86_64; ) ScienceLegion/1.0.0'
              - class: nexus.actions.CleanDocumentOperationUpdateDocumentScimagPbAction
              - class: nexus.actions.SendDocumentOperationUpdateDocumentScimagPbToGoldenPostgresAction
                kwargs:
                  database:
                    database: nexus
                    host: postgres.example.net
                    password: '{{ DATABASE_PASSWORD }}'
                    username: '{{ DATABASE_USERNAME }}'
              - class: nexus.actions.SendDocumentOperationUpdateDocumentScimagPbReferencesToKafkaAction
                kwargs:
                  brokers: |
                    kafka-0.example.net,
                    kafka-1.example.net                    
                  topic: cross_references
              - class: nexus.actions.SendDocumentOperationUpdateDocumentPbToSummaAction
                kwargs:
                  summa:
                    base_url: http://summa.example.net
                    timeout: 15
                    ttl_dns_cache: 30
            filter:
              class: nexus.pipe.filters.DocumentOperationFilter
              kwargs:
                document: scimag
                operation: update_document
        - class: nexus.pipe.processors.ActionProcessor
          kwargs:
            actions:
              - class: nexus.actions.CleanDocumentOperationUpdateDocumentScitechPbAction
              - class: nexus.actions.SendDocumentOperationUpdateDocumentScitechPbToGoldenPostgresAction
                kwargs:
                  database:
                    database: nexus
                    host: postgres.example.net
                    password: '{{ DATABASE_PASSWORD }}'
                    username: '{{ DATABASE_USERNAME }}'
              - class: nexus.actions.SendDocumentOperationUpdateDocumentPbToSummaAction
                kwargs:
                  summa:
                    base_url: http://summa.example.net
                    timeout: 15
                    ttl_dns_cache: 30
            filter:
              class: nexus.pipe.filters.DocumentOperationFilter
              kwargs:
                document: scitech
                operation: update_document