ADK.Application (ADK v0.0.1-alpha.1)

OTP Application for ADK.

Supervision Tree

ADK.Supervisor (rest_for_one)
├── ADK.SessionRegistry        — Registry for session lookup by {app, user, session_id}
├── ADK.Plugin.Registry        — Agent storing global plugins
├── ADK.Auth.InMemoryStore     — Agent for credential storage (dev/test)
├── ADK.Artifact.InMemory      — Agent for artifact storage (dev/test)
├── ADK.Memory.InMemory        — ETS-backed memory store (dev/test)
├── ADK.Session.Store.InMemory — ETS-backed session persistence
├── ADK.SessionSupervisor      — DynamicSupervisor for session GenServers
├── ADK.RunnerSupervisor       — Task.Supervisor for async agent executions
├── ADK.Telemetry.SpanStore    — ETS-backed debug span storage
├── ADK.Workflow.Checkpoint.EtsStore — ETS-backed workflow checkpoints
├── ADK.Tool.Approval          — GenServer for HITL tool approval (optional)
├── ADK.LLM.CircuitBreaker     — Circuit breaker for LLM calls
└── ADK.LLM.Router             — Smart multi-backend LLM router with failover

Uses rest_for_one because sessions depend on the Registry being alive. If the Registry restarts, all sessions must restart to re-register.

Configuration

Optional application env to control which children start:

config :adk,
  start_credential_store: true,   # default true
  start_artifact_store: true,     # default true
  start_circuit_breaker: true,    # default true
  start_llm_router: true,         # default true
  start_approval_server: false,   # default false — enable for HITL in server mode
  circuit_breaker: [              # CircuitBreaker options
    failure_threshold: 5,
    reset_timeout_ms: 60_000
  ],
  llm_router: [                   # LLM Router options
    backends: [],
    fallback_error: :all_backends_failed
  ]