-- broker_queueinstance table
-- Tracks active and historical broker queue instances

CREATE TABLE IF NOT EXISTS broker_queueinstance (
    id_broker_queueinstance BIGSERIAL PRIMARY KEY,
    name VARCHAR(255) NOT NULL,
    hostname VARCHAR(255) NOT NULL,
    pid INTEGER NOT NULL,
    version VARCHAR(50) NOT NULL,
    status VARCHAR(20) NOT NULL DEFAULT 'active',
    started_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
    last_ping_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
    shutdown_at TIMESTAMP WITH TIME ZONE,
    queue_count INTEGER NOT NULL DEFAULT 0,
    jobs_handled BIGINT NOT NULL DEFAULT 0,

    CONSTRAINT broker_queueinstance_status_check CHECK (status IN ('active', 'inactive', 'shutdown'))
);

-- Indexes
CREATE INDEX IF NOT EXISTS idx_broker_queueinstance_status ON broker_queueinstance(status);
CREATE INDEX IF NOT EXISTS idx_broker_queueinstance_hostname ON broker_queueinstance(hostname);
CREATE INDEX IF NOT EXISTS idx_broker_queueinstance_last_ping ON broker_queueinstance(last_ping_at);

-- Comments
COMMENT ON TABLE broker_queueinstance IS 'Tracks broker queue instances (active and historical)';
COMMENT ON COLUMN broker_queueinstance.name IS 'Human-readable name of the broker instance';
COMMENT ON COLUMN broker_queueinstance.hostname IS 'Hostname where the broker is running';
COMMENT ON COLUMN broker_queueinstance.pid IS 'Process ID of the broker';
COMMENT ON COLUMN broker_queueinstance.status IS 'Current status: active, inactive, or shutdown';
COMMENT ON COLUMN broker_queueinstance.jobs_handled IS 'Total number of jobs handled by this instance';