openapi: 3.1.0
info:
  title: Spring Boot 3 Actuator Environment Threads API
  description: Production-ready monitoring and management endpoints provided by Spring Boot 3 Actuator. Includes health checks, Micrometer metrics, environment inspection, logger configuration, thread dumps, scheduled tasks, HTTP exchange tracing, and more. Endpoints are served under the /actuator base path and can be secured via Spring Security.
  version: 3.2.0
  contact:
    name: Spring Team
    url: https://spring.io/team
  license:
    name: Apache 2.0
    url: https://www.apache.org/licenses/LICENSE-2.0
servers:
- url: http://localhost:8080/actuator
  description: Local Spring Boot 3 application with Actuator enabled
tags:
- name: Threads
  description: Thread and heap diagnostics
paths:
  /threaddump:
    get:
      operationId: getThreadDump
      summary: Get Thread Dump
      description: Returns a snapshot of all live threads in the JVM including stack traces, thread states, and lock information.
      tags:
      - Threads
      responses:
        '200':
          description: Thread dump
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ThreadDumpResponse'
            text/plain:
              schema:
                type: string
components:
  schemas:
    ThreadDumpResponse:
      type: object
      description: JVM thread dump snapshot
      properties:
        threads:
          type: array
          items:
            type: object
            properties:
              threadName:
                type: string
              threadId:
                type: integer
                format: int64
              blockedTime:
                type: integer
                format: int64
              blockedCount:
                type: integer
                format: int64
              waitedTime:
                type: integer
                format: int64
              waitedCount:
                type: integer
                format: int64
              lockName:
                type: string
                nullable: true
              lockOwnerId:
                type: integer
                format: int64
              lockOwnerName:
                type: string
                nullable: true
              daemon:
                type: boolean
              inNative:
                type: boolean
              suspended:
                type: boolean
              threadState:
                type: string
                enum:
                - NEW
                - RUNNABLE
                - BLOCKED
                - WAITING
                - TIMED_WAITING
                - TERMINATED
              priority:
                type: integer
              stackTrace:
                type: array
                items:
                  type: object
                  properties:
                    classLoaderName:
                      type: string
                    moduleName:
                      type: string
                    moduleVersion:
                      type: string
                    methodName:
                      type: string
                    fileName:
                      type: string
                    lineNumber:
                      type: integer
                    className:
                      type: string
                    nativeMethod:
                      type: boolean