http request action

[DmitryRomanov]

Add new http_request action plugin for sending HTTP requests with event data as body.

Features

• HTTP methods: POST, GET, PATCH
• URL templating with {param_name} placeholders
• Custom headers support
• Query string parameters from unused URL params
• Retry with exponential backoff
• Response body writing to configurable field
• HTTP/2 support (optional)
• Metrics: request count + latency histogram

Config

pipelines:
  - name: http_pipeline
    actions:
      - type: http_request
        address: "http://example.com/api/{tenant_id}"
        method: POST
        content_type: "application/json"
        params:
          tenant_id: "field.tenant"
          user_id: ".user"
        response_field: "http_response"
        retry: 3
        retention: 100ms
        timeout: 5s