312 lines
13 KiB
PL/PgSQL
312 lines
13 KiB
PL/PgSQL
-- 推送消息接收服务数据库设计
|
||
-- 创建数据库和基础表结构
|
||
|
||
-- 1. 创建数据库 (需要管理员权限执行)
|
||
-- CREATE DATABASE push_messages;
|
||
-- CREATE USER push_service WITH PASSWORD 'your_secure_password';
|
||
-- GRANT ALL PRIVILEGES ON DATABASE push_messages TO push_service;
|
||
|
||
-- 使用数据库
|
||
-- \c push_messages;
|
||
|
||
-- 2. 创建扩展
|
||
CREATE EXTENSION IF NOT EXISTS "uuid-ossp";
|
||
CREATE EXTENSION IF NOT EXISTS "pg_trgm";
|
||
|
||
-- 3. 推送消息主表
|
||
CREATE TABLE push_messages (
|
||
id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
|
||
message_id VARCHAR(255) UNIQUE, -- 外部消息ID（如果有）
|
||
push_type VARCHAR(50) NOT NULL, -- 推送类型：SOS, HEALTH, LOCATION, ALERT 等
|
||
user_id VARCHAR(255), -- 用户ID
|
||
device_id VARCHAR(255), -- 设备ID
|
||
source_ip INET, -- 来源IP地址
|
||
user_agent TEXT, -- 用户代理
|
||
|
||
-- 消息内容（JSON格式存储原始数据）
|
||
raw_data JSONB NOT NULL, -- 原始接收到的完整数据
|
||
parsed_data JSONB, -- 解析后的结构化数据
|
||
|
||
-- 时间戳
|
||
received_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP,
|
||
created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP,
|
||
updated_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP,
|
||
|
||
-- 处理状态
|
||
processing_status VARCHAR(20) DEFAULT 'pending', -- pending, processed, failed, ignored
|
||
processed_at TIMESTAMP WITH TIME ZONE,
|
||
error_message TEXT,
|
||
retry_count INTEGER DEFAULT 0,
|
||
|
||
-- 优先级和分类
|
||
priority INTEGER DEFAULT 5, -- 1-10，数字越小优先级越高
|
||
category VARCHAR(100), -- 消息分类
|
||
tags TEXT[], -- 标签数组
|
||
|
||
-- 验证和重复检查
|
||
checksum VARCHAR(64), -- 消息校验和，用于去重
|
||
is_duplicate BOOLEAN DEFAULT FALSE,
|
||
original_message_id UUID, -- 如果是重复消息，指向原始消息ID
|
||
|
||
-- 地理位置信息（如果有）
|
||
latitude DECIMAL(10, 8),
|
||
longitude DECIMAL(11, 8),
|
||
location_accuracy FLOAT,
|
||
location_timestamp TIMESTAMP WITH TIME ZONE,
|
||
|
||
-- 索引和搜索
|
||
search_vector tsvector, -- 全文搜索向量
|
||
|
||
-- 软删除
|
||
is_deleted BOOLEAN DEFAULT FALSE,
|
||
deleted_at TIMESTAMP WITH TIME ZONE
|
||
);
|
||
|
||
-- 4. 推送类型配置表
|
||
CREATE TABLE push_types (
|
||
id SERIAL PRIMARY KEY,
|
||
type_code VARCHAR(50) UNIQUE NOT NULL,
|
||
type_name VARCHAR(100) NOT NULL,
|
||
description TEXT,
|
||
default_priority INTEGER DEFAULT 5,
|
||
validation_schema JSONB, -- JSON Schema 用于验证消息格式
|
||
is_active BOOLEAN DEFAULT TRUE,
|
||
created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP,
|
||
updated_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP
|
||
);
|
||
|
||
-- 5. 消息处理日志表
|
||
CREATE TABLE message_processing_logs (
|
||
id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
|
||
message_id UUID REFERENCES push_messages(id) ON DELETE CASCADE,
|
||
processing_step VARCHAR(100) NOT NULL,
|
||
status VARCHAR(20) NOT NULL, -- started, completed, failed
|
||
started_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP,
|
||
completed_at TIMESTAMP WITH TIME ZONE,
|
||
duration_ms INTEGER,
|
||
details JSONB,
|
||
error_details TEXT
|
||
);
|
||
|
||
-- 6. 设备信息表
|
||
CREATE TABLE devices (
|
||
id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
|
||
device_id VARCHAR(255) UNIQUE NOT NULL,
|
||
device_name VARCHAR(255),
|
||
device_type VARCHAR(100), -- sensor, mobile, wearable, etc.
|
||
user_id VARCHAR(255),
|
||
last_seen_at TIMESTAMP WITH TIME ZONE,
|
||
is_active BOOLEAN DEFAULT TRUE,
|
||
metadata JSONB, -- 设备元数据
|
||
created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP,
|
||
updated_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP
|
||
);
|
||
|
||
-- 7. 用户信息表（简化）
|
||
CREATE TABLE users (
|
||
id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
|
||
user_id VARCHAR(255) UNIQUE NOT NULL,
|
||
user_name VARCHAR(255),
|
||
user_type VARCHAR(50), -- student, teacher, elder, caregiver, etc.
|
||
contact_info JSONB, -- 联系方式
|
||
preferences JSONB, -- 用户偏好设置
|
||
is_active BOOLEAN DEFAULT TRUE,
|
||
created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP,
|
||
updated_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP
|
||
);
|
||
|
||
-- 8. 系统统计表
|
||
CREATE TABLE system_stats (
|
||
id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
|
||
stat_date DATE DEFAULT CURRENT_DATE,
|
||
stat_hour INTEGER DEFAULT EXTRACT(HOUR FROM CURRENT_TIMESTAMP),
|
||
push_type VARCHAR(50),
|
||
message_count INTEGER DEFAULT 0,
|
||
success_count INTEGER DEFAULT 0,
|
||
error_count INTEGER DEFAULT 0,
|
||
avg_processing_time_ms FLOAT,
|
||
created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP,
|
||
UNIQUE(stat_date, stat_hour, push_type)
|
||
);
|
||
|
||
-- 9. 创建索引
|
||
CREATE INDEX idx_push_messages_received_at ON push_messages(received_at DESC);
|
||
CREATE INDEX idx_push_messages_push_type ON push_messages(push_type);
|
||
CREATE INDEX idx_push_messages_user_id ON push_messages(user_id);
|
||
CREATE INDEX idx_push_messages_device_id ON push_messages(device_id);
|
||
CREATE INDEX idx_push_messages_processing_status ON push_messages(processing_status);
|
||
CREATE INDEX idx_push_messages_priority ON push_messages(priority);
|
||
CREATE INDEX idx_push_messages_checksum ON push_messages(checksum);
|
||
CREATE INDEX idx_push_messages_location ON push_messages USING GIST(ST_POINT(longitude, latitude)) WHERE latitude IS NOT NULL AND longitude IS NOT NULL;
|
||
CREATE INDEX idx_push_messages_search_vector ON push_messages USING GIN(search_vector);
|
||
CREATE INDEX idx_push_messages_raw_data ON push_messages USING GIN(raw_data);
|
||
CREATE INDEX idx_push_messages_parsed_data ON push_messages USING GIN(parsed_data);
|
||
|
||
CREATE INDEX idx_processing_logs_message_id ON message_processing_logs(message_id);
|
||
CREATE INDEX idx_processing_logs_started_at ON message_processing_logs(started_at DESC);
|
||
|
||
CREATE INDEX idx_devices_device_id ON devices(device_id);
|
||
CREATE INDEX idx_devices_user_id ON devices(user_id);
|
||
CREATE INDEX idx_devices_last_seen_at ON devices(last_seen_at DESC);
|
||
|
||
CREATE INDEX idx_users_user_id ON users(user_id);
|
||
|
||
CREATE INDEX idx_system_stats_date_hour ON system_stats(stat_date DESC, stat_hour DESC);
|
||
CREATE INDEX idx_system_stats_push_type ON system_stats(push_type);
|
||
|
||
-- 10. 创建触发器函数
|
||
CREATE OR REPLACE FUNCTION update_updated_at_column()
|
||
RETURNS TRIGGER AS $$
|
||
BEGIN
|
||
NEW.updated_at = CURRENT_TIMESTAMP;
|
||
RETURN NEW;
|
||
END;
|
||
$$ language 'plpgsql';
|
||
|
||
CREATE OR REPLACE FUNCTION update_search_vector()
|
||
RETURNS TRIGGER AS $$
|
||
BEGIN
|
||
NEW.search_vector := to_tsvector('english',
|
||
COALESCE(NEW.push_type, '') || ' ' ||
|
||
COALESCE(NEW.user_id, '') || ' ' ||
|
||
COALESCE(NEW.device_id, '') || ' ' ||
|
||
COALESCE(NEW.category, '') || ' ' ||
|
||
COALESCE(array_to_string(NEW.tags, ' '), '') || ' ' ||
|
||
COALESCE(NEW.raw_data::text, '')
|
||
);
|
||
RETURN NEW;
|
||
END;
|
||
$$ language 'plpgsql';
|
||
|
||
-- 11. 创建触发器
|
||
CREATE TRIGGER update_push_messages_updated_at
|
||
BEFORE UPDATE ON push_messages
|
||
FOR EACH ROW EXECUTE FUNCTION update_updated_at_column();
|
||
|
||
CREATE TRIGGER update_push_messages_search_vector
|
||
BEFORE INSERT OR UPDATE ON push_messages
|
||
FOR EACH ROW EXECUTE FUNCTION update_search_vector();
|
||
|
||
CREATE TRIGGER update_push_types_updated_at
|
||
BEFORE UPDATE ON push_types
|
||
FOR EACH ROW EXECUTE FUNCTION update_updated_at_column();
|
||
|
||
CREATE TRIGGER update_devices_updated_at
|
||
BEFORE UPDATE ON devices
|
||
FOR EACH ROW EXECUTE FUNCTION update_updated_at_column();
|
||
|
||
CREATE TRIGGER update_users_updated_at
|
||
BEFORE UPDATE ON users
|
||
FOR EACH ROW EXECUTE FUNCTION update_updated_at_column();
|
||
|
||
-- 12. 插入基础推送类型配置
|
||
INSERT INTO push_types (type_code, type_name, description, default_priority, validation_schema) VALUES
|
||
('SOS', '紧急求救', 'SOS紧急求救信号', 1, '{"type": "object", "required": ["userId"], "properties": {"userId": {"type": "string"}, "emergencyLevel": {"type": "string", "enum": ["LOW", "MEDIUM", "HIGH", "CRITICAL"]}}}'),
|
||
('HEALTH', '健康数据', '健康监测数据推送', 3, '{"type": "object", "required": ["userId"], "properties": {"userId": {"type": "string"}, "H": {"type": "number"}, "O": {"type": "number"}, "T": {"type": "number"}}}'),
|
||
('LOCATION', '位置信息', '位置定位数据推送', 4, '{"type": "object", "required": ["userId"], "properties": {"userId": {"type": "string"}, "lat": {"type": "number"}, "lng": {"type": "number"}, "accuracy": {"type": "number"}}}'),
|
||
('ALERT', '告警信息', '各类告警信息推送', 2, '{"type": "object", "required": ["userId", "alertType"], "properties": {"userId": {"type": "string"}, "alertType": {"type": "string"}, "severity": {"type": "string"}}}'),
|
||
('ACTIVITY', '活动数据', '运动和活动数据推送', 5, '{"type": "object", "required": ["userId"], "properties": {"userId": {"type": "string"}, "activityType": {"type": "string"}, "duration": {"type": "number"}, "calories": {"type": "number"}}}'),
|
||
('DEVICE_STATUS', '设备状态', '设备状态信息推送', 4, '{"type": "object", "required": ["deviceId"], "properties": {"deviceId": {"type": "string"}, "status": {"type": "string"}, "batteryLevel": {"type": "number"}}}');
|
||
|
||
-- 13. 创建视图
|
||
-- 最近24小时消息统计视图
|
||
CREATE VIEW recent_message_stats AS
|
||
SELECT
|
||
push_type,
|
||
COUNT(*) as total_count,
|
||
COUNT(*) FILTER (WHERE processing_status = 'processed') as processed_count,
|
||
COUNT(*) FILTER (WHERE processing_status = 'failed') as failed_count,
|
||
COUNT(*) FILTER (WHERE processing_status = 'pending') as pending_count,
|
||
AVG(EXTRACT(EPOCH FROM (processed_at - received_at)) * 1000) as avg_processing_time_ms,
|
||
MIN(received_at) as first_received,
|
||
MAX(received_at) as last_received
|
||
FROM push_messages
|
||
WHERE received_at >= CURRENT_TIMESTAMP - INTERVAL '24 hours'
|
||
AND is_deleted = FALSE
|
||
GROUP BY push_type;
|
||
|
||
-- 活跃设备统计视图
|
||
CREATE VIEW active_devices_stats AS
|
||
SELECT
|
||
device_type,
|
||
COUNT(*) as total_devices,
|
||
COUNT(*) FILTER (WHERE last_seen_at >= CURRENT_TIMESTAMP - INTERVAL '1 hour') as active_1h,
|
||
COUNT(*) FILTER (WHERE last_seen_at >= CURRENT_TIMESTAMP - INTERVAL '24 hours') as active_24h,
|
||
COUNT(*) FILTER (WHERE last_seen_at >= CURRENT_TIMESTAMP - INTERVAL '7 days') as active_7d
|
||
FROM devices
|
||
WHERE is_active = TRUE
|
||
GROUP BY device_type;
|
||
|
||
-- 14. 创建函数
|
||
-- 清理旧数据函数
|
||
CREATE OR REPLACE FUNCTION cleanup_old_messages(days_to_keep INTEGER DEFAULT 30)
|
||
RETURNS INTEGER AS $$
|
||
DECLARE
|
||
deleted_count INTEGER;
|
||
BEGIN
|
||
-- 软删除超过指定天数的消息
|
||
UPDATE push_messages
|
||
SET is_deleted = TRUE, deleted_at = CURRENT_TIMESTAMP
|
||
WHERE received_at < CURRENT_TIMESTAMP - (days_to_keep || ' days')::INTERVAL
|
||
AND is_deleted = FALSE;
|
||
|
||
GET DIAGNOSTICS deleted_count = ROW_COUNT;
|
||
|
||
-- 记录清理日志
|
||
INSERT INTO message_processing_logs (message_id, processing_step, status, details)
|
||
VALUES (NULL, 'cleanup_old_messages', 'completed',
|
||
json_build_object('days_to_keep', days_to_keep, 'deleted_count', deleted_count));
|
||
|
||
RETURN deleted_count;
|
||
END;
|
||
$$ LANGUAGE plpgsql;
|
||
|
||
-- 获取消息统计函数
|
||
CREATE OR REPLACE FUNCTION get_message_stats(hours_back INTEGER DEFAULT 24)
|
||
RETURNS TABLE(
|
||
push_type VARCHAR,
|
||
total_count BIGINT,
|
||
processed_count BIGINT,
|
||
failed_count BIGINT,
|
||
pending_count BIGINT,
|
||
avg_processing_time_ms NUMERIC
|
||
) AS $$
|
||
BEGIN
|
||
RETURN QUERY
|
||
SELECT
|
||
pm.push_type,
|
||
COUNT(*) as total_count,
|
||
COUNT(*) FILTER (WHERE pm.processing_status = 'processed') as processed_count,
|
||
COUNT(*) FILTER (WHERE pm.processing_status = 'failed') as failed_count,
|
||
COUNT(*) FILTER (WHERE pm.processing_status = 'pending') as pending_count,
|
||
AVG(EXTRACT(EPOCH FROM (pm.processed_at - pm.received_at)) * 1000) as avg_processing_time_ms
|
||
FROM push_messages pm
|
||
WHERE pm.received_at >= CURRENT_TIMESTAMP - (hours_back || ' hours')::INTERVAL
|
||
AND pm.is_deleted = FALSE
|
||
GROUP BY pm.push_type
|
||
ORDER BY total_count DESC;
|
||
END;
|
||
$$ LANGUAGE plpgsql;
|
||
|
||
-- 15. 创建定时任务（需要pg_cron扩展）
|
||
-- 每天凌晨2点清理30天前的数据
|
||
-- SELECT cron.schedule('cleanup-old-messages', '0 2 * * *', 'SELECT cleanup_old_messages(30);');
|
||
|
||
-- 16. 权限设置
|
||
GRANT ALL PRIVILEGES ON ALL TABLES IN SCHEMA public TO push_service;
|
||
GRANT ALL PRIVILEGES ON ALL SEQUENCES IN SCHEMA public TO push_service;
|
||
GRANT EXECUTE ON ALL FUNCTIONS IN SCHEMA public TO push_service;
|
||
|
||
-- 17. 初始化完成标记
|
||
INSERT INTO system_stats (stat_date, stat_hour, push_type, message_count)
|
||
VALUES (CURRENT_DATE, EXTRACT(HOUR FROM CURRENT_TIMESTAMP), 'SYSTEM', 0)
|
||
ON CONFLICT (stat_date, stat_hour, push_type) DO NOTHING;
|
||
|
||
COMMENT ON DATABASE push_messages IS '推送消息接收服务数据库 - 存储所有接收到的推送消息及相关数据';
|
||
COMMENT ON TABLE push_messages IS '推送消息主表 - 存储所有接收到的推送消息';
|
||
COMMENT ON TABLE push_types IS '推送类型配置表 - 定义各种推送消息类型及其验证规则';
|
||
COMMENT ON TABLE message_processing_logs IS '消息处理日志表 - 记录消息处理过程的详细日志';
|
||
COMMENT ON TABLE devices IS '设备信息表 - 存储推送消息来源设备的信息';
|
||
COMMENT ON TABLE users IS '用户信息表 - 存储用户基本信息';
|
||
COMMENT ON TABLE system_stats IS '系统统计表 - 存储系统运行统计数据';
|