runs/

Runs Service

The Runs Service implements the RunService gRPC interface using buf connect. It manages workflow runs, actions, attempts, and cluster events.

Features

• Create and manage runs
• Track actions and their execution state
• Record action attempts and retries
• Store cluster events and phase transitions
• List and filter runs and actions
• Abort runs and individual actions
• Dual database support: SQLite (default) and PostgreSQL
• Health and readiness checks
• Streaming RPCs for real-time updates

Running the Service

Prerequisites

1. Go 1.24 or later
2. (Optional) PostgreSQL running for production use

Quick Start with SQLite

The service uses SQLite by default, no database setup required!

# Build and run
go build -o runs-service cmd/main.go
./runs-service --config config.yaml

Or using make:

make build
make run

The service will:

1. Create/connect to SQLite database (runs.db)
2. Run database migrations
3. Start HTTP/2 server on port 8090 (configurable)

Setup with PostgreSQL

For production deployments, use PostgreSQL:

# Using Docker
docker run --name flyte-runs-postgres \
  -e POSTGRES_PASSWORD=postgres \
  -e POSTGRES_DB=flyte_runs \
  -p 5433:5432 \
  -d postgres:15

# Or use your existing PostgreSQL instance
createdb flyte_runs

Run with PostgreSQL config:

./runs-service --config config-postgres.yaml

Configuration

SQLite (default) - config.yaml:

runs:
  server:
    host: "0.0.0.0"
    port: 8090
  watchBufferSize: 100

database:
  sqlite:
    file: "./runs.db"

logger:
  level: 4  # Info level
  show-source: true

PostgreSQL - config-postgres.yaml:

runs:
  server:
    host: "0.0.0.0"
    port: 8090
  watchBufferSize: 100

database:
  postgres:
    host: "localhost"
    port: 5433
    dbname: "flyte_runs"
    username: "postgres"
    password: "postgres"
    extraOptions: "sslmode=disable"
  maxIdleConnections: 10
  maxOpenConnections: 100
  connMaxLifeTime: 1h

logger:
  level: 4
  show-source: true

Testing

Run unit tests

go test ./...
# or
make test

Run integration test with client

Using SQLite:

# Terminal 1: Start the service
go run cmd/main.go --config config.yaml

# Terminal 2: Run the test client
go run testclient/main.go

Or use make:

make integration-test

Using PostgreSQL:

make integration-test-postgres

Expected output:

Test 1: Creating a run with task spec...
✓ Run created successfully: test-run-001

Test 2: Creating a run with auto-generated name...
✓ Run with auto-generated name created: run-1759535665

Test 3: Getting run details...
✓ Retrieved run details: details:{}

Test 4: Listing runs...
✓ Found 2 runs

Test 5: Listing actions for the run...
✓ Found 0 actions

Test 6: Aborting an action...
✓ Action aborted successfully

Test 7: Aborting a run...
✓ Run aborted successfully

All tests completed successfully! 🎉

Check service health

# Health check
curl http://localhost:8090/healthz

# Readiness check
curl http://localhost:8090/readyz

Inspect database

SQLite:

sqlite3 runs.db

# View runs
SELECT id, org, project, domain, name, root_action_name, created_at
FROM runs
ORDER BY created_at DESC;

# View actions
SELECT id, org, project, domain, run_name, name, phase, action_type
FROM actions
ORDER BY created_at DESC;

PostgreSQL:

# Connect to PostgreSQL
psql -h localhost -p 5433 -U postgres -d flyte_runs

# View runs
SELECT id, org, project, domain, name, root_action_name, created_at
FROM runs
ORDER BY created_at DESC;

# View actions
SELECT id, org, project, domain, run_name, name, phase, action_type
FROM actions
ORDER BY created_at DESC;

API Endpoints

The service exposes the following buf connect endpoints:

Run Management

• POST /flyteidl2.workflow.RunService/CreateRun - Create a new run
• POST /flyteidl2.workflow.RunService/GetRunDetails - Get run details
• POST /flyteidl2.workflow.RunService/ListRuns - List runs with filtering
• POST /flyteidl2.workflow.RunService/AbortRun - Abort a run

Action Management

• POST /flyteidl2.workflow.RunService/GetActionDetails - Get action details
• POST /flyteidl2.workflow.RunService/GetActionData - Get action input/output data
• POST /flyteidl2.workflow.RunService/ListActions - List actions for a run
• POST /flyteidl2.workflow.RunService/AbortAction - Abort a specific action

Streaming (Watch) RPCs

• POST /flyteidl2.workflow.RunService/WatchRunDetails - Stream run detail updates
• POST /flyteidl2.workflow.RunService/WatchActionDetails - Stream action detail updates
• POST /flyteidl2.workflow.RunService/WatchRuns - Stream run updates
• POST /flyteidl2.workflow.RunService/WatchActions - Stream action updates
• POST /flyteidl2.workflow.RunService/WatchClusterEvents - Stream cluster events

Health Endpoints

• GET /healthz - Health check
• GET /readyz - Readiness check

Database Schema

runs table

CREATE TABLE runs (
    id BIGSERIAL PRIMARY KEY,
    org VARCHAR(255) NOT NULL,
    project VARCHAR(255) NOT NULL,
    domain VARCHAR(255) NOT NULL,
    name VARCHAR(255) NOT NULL,
    root_action_name VARCHAR(255) NOT NULL,
    trigger_org VARCHAR(255),
    trigger_project VARCHAR(255),
    trigger_domain VARCHAR(255),
    trigger_name VARCHAR(255),
    run_spec JSONB NOT NULL,
    created_by_principal VARCHAR(255),
    created_by_k8s_service_account VARCHAR(255),
    created_at TIMESTAMP NOT NULL DEFAULT NOW(),
    updated_at TIMESTAMP NOT NULL DEFAULT NOW(),
    UNIQUE(org, project, domain, name)
);

actions table

CREATE TABLE actions (
    id BIGSERIAL PRIMARY KEY,
    org VARCHAR(255) NOT NULL,
    project VARCHAR(255) NOT NULL,
    domain VARCHAR(255) NOT NULL,
    run_name VARCHAR(255) NOT NULL,
    name VARCHAR(255) NOT NULL,
    run_id BIGINT NOT NULL REFERENCES runs(id),
    parent_action_name VARCHAR(255),
    action_type VARCHAR(50) NOT NULL,
    phase VARCHAR(50) NOT NULL DEFAULT 'PHASE_QUEUED',
    task_spec JSONB,
    trace_spec JSONB,
    condition_spec JSONB,
    input_uri TEXT,
    metadata JSONB,
    created_at TIMESTAMP NOT NULL DEFAULT NOW(),
    updated_at TIMESTAMP NOT NULL DEFAULT NOW(),
    UNIQUE(org, project, domain, run_name, name)
);

action_attempts table

CREATE TABLE action_attempts (
    id BIGSERIAL PRIMARY KEY,
    action_id BIGINT NOT NULL REFERENCES actions(id),
    attempt_number INT NOT NULL,
    phase VARCHAR(50) NOT NULL DEFAULT 'PHASE_QUEUED',
    start_time TIMESTAMP,
    end_time TIMESTAMP,
    outputs JSONB,
    log_info JSONB,
    log_context JSONB,
    created_at TIMESTAMP NOT NULL DEFAULT NOW(),
    updated_at TIMESTAMP NOT NULL DEFAULT NOW(),
    UNIQUE(action_id, attempt_number)
);

cluster_events table

CREATE TABLE cluster_events (
    id BIGSERIAL PRIMARY KEY,
    attempt_id BIGINT NOT NULL REFERENCES action_attempts(id),
    occurred_at TIMESTAMP NOT NULL,
    message TEXT NOT NULL,
    created_at TIMESTAMP NOT NULL DEFAULT NOW()
);

phase_transitions table

CREATE TABLE phase_transitions (
    id BIGSERIAL PRIMARY KEY,
    attempt_id BIGINT NOT NULL REFERENCES action_attempts(id),
    phase VARCHAR(50) NOT NULL,
    start_time TIMESTAMP NOT NULL,
    end_time TIMESTAMP,
    created_at TIMESTAMP NOT NULL DEFAULT NOW()
);

Project Structure

runs/
├── cmd/
│   └── main.go              # Entry point
├── config/
│   └── config.go            # Configuration structs
├── repository/
│   ├── interfaces.go        # Repository interface
│   ├── models.go            # Database models
│   └── postgres.go          # PostgreSQL/SQLite implementation
├── service/
│   └── run_service.go       # Service implementation
├── migrations/
│   └── migrations.go        # Database migrations
├── client/
│   └── main.go              # Test client
├── config.yaml              # SQLite configuration (default)
├── config-postgres.yaml     # PostgreSQL configuration
├── Makefile                 # Build and test commands
└── README.md                # This file

Development

Build commands

# Build service
make build

# Build client
make build-testclient

# Clean artifacts
make clean

Database switching

The service automatically selects the database based on configuration:

• If database.sqlite.file is set → uses SQLite
• If database.postgres is set → uses PostgreSQL

No code changes needed, just update config.yaml!

Adding new features

1. Update proto definitions in /flyteidl2/workflow/
2. Regenerate code: buf generate
3. Update repository interface in repository/interfaces.go
4. Implement in repository/postgres.go
5. Add service handler in service/run_service.go
6. Add tests and update client

Troubleshooting

Port already in use

If port 8090 is already in use, update in config.yaml:

runs:
  server:
    port: 8091  # Use a different port

Database connection issues

SQLite:

• Check file permissions on ./runs.db
• Ensure directory is writable

PostgreSQL:

• Verify PostgreSQL is running: pg_isready -h localhost -p 5433
• Check credentials in config-postgres.yaml
• Ensure database exists: psql -h localhost -p 5433 -U postgres -l

Service won't start

Check logs for detailed error messages. Common issues:

• Config file not found (use --config flag)
• Database connection failed
• Port already in use