实现七月迭代公共技术基础

migrations/000165_create_public_outbox.up.sql

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+-- 创建公共 Outbox；该表及全部公共索引、约束只由 tech-public-foundation 维护。
+CREATE TABLE tb_outbox_event (
+    id bigserial PRIMARY KEY,
+    event_id varchar(64) NOT NULL,
+    event_type varchar(150) NOT NULL,
+    payload_version integer NOT NULL DEFAULT 1,
+    aggregate_type varchar(100) NOT NULL,
+    aggregate_id varchar(100) NOT NULL,
+    resource_type varchar(100) NOT NULL,
+    resource_id varchar(100) NOT NULL,
+    business_key varchar(150) NOT NULL DEFAULT '',
+    request_id varchar(100) NOT NULL DEFAULT '',
+    correlation_id varchar(100) NOT NULL DEFAULT '',
+    payload jsonb NOT NULL,
+    status integer NOT NULL DEFAULT 1,
+    retry_count integer NOT NULL DEFAULT 0,
+    max_retries integer NOT NULL DEFAULT 10,
+    next_attempt_at timestamptz NOT NULL DEFAULT NOW(),
+    lease_owner varchar(100),
+    lease_expires_at timestamptz,
+    last_error_code varchar(100) NOT NULL DEFAULT '',
+    last_error_summary varchar(500) NOT NULL DEFAULT '',
+    delivered_at timestamptz,
+    created_at timestamptz NOT NULL DEFAULT NOW(),
+    updated_at timestamptz NOT NULL DEFAULT NOW(),
+    CONSTRAINT uq_outbox_event_id UNIQUE (event_id),
+    CONSTRAINT ck_outbox_event_status CHECK (status IN (1, 2, 3, 4)),
+    CONSTRAINT ck_outbox_event_payload_version CHECK (payload_version > 0),
+    CONSTRAINT ck_outbox_event_retry_count CHECK (retry_count >= 0 AND max_retries > 0)
+);
+
+CREATE INDEX idx_outbox_event_claim
+    ON tb_outbox_event (status, next_attempt_at, lease_expires_at, created_at);
+CREATE INDEX idx_outbox_event_type_status
+    ON tb_outbox_event (event_type, status);
+CREATE INDEX idx_outbox_event_aggregate
+    ON tb_outbox_event (aggregate_type, aggregate_id, created_at);
+CREATE INDEX idx_outbox_event_resource
+    ON tb_outbox_event (resource_type, resource_id, created_at);
+CREATE INDEX idx_outbox_event_request_id ON tb_outbox_event (request_id) WHERE request_id <> '';
+CREATE INDEX idx_outbox_event_correlation_id ON tb_outbox_event (correlation_id) WHERE correlation_id <> '';
+
+COMMENT ON TABLE tb_outbox_event IS '公共可靠事件 Outbox';
+COMMENT ON COLUMN tb_outbox_event.status IS '投递状态 1=待投递, 2=投递中, 3=已投递, 4=投递失败';