'use strict';
|
|
const assert = require('assert');
|
const awaitFirst = require('await-first');
|
|
module.exports = app => {
|
app.addSingleton('redis', createClient);
|
};
|
|
let count = 0;
|
function createClient(config, app) {
|
const Redis = app.config.redis.Redis || require('ioredis');
|
let client;
|
|
if (config.cluster === true) {
|
assert(config.nodes && config.nodes.length !== 0, '[egg-redis] cluster nodes configuration is required when use cluster redis');
|
|
config.nodes.forEach(client => {
|
assert(client.host && client.port && client.password !== undefined && client.db !== undefined,
|
`[egg-redis] 'host: ${client.host}', 'port: ${client.port}', 'password: ${client.password}', 'db: ${client.db}' are required on config`);
|
});
|
app.coreLogger.info('[egg-redis] cluster connecting');
|
client = new Redis.Cluster(config.nodes, config);
|
} else if (config.sentinels) {
|
assert(config.sentinels && config.sentinels.length !== 0, '[egg-redis] sentinels configuration is required when use redis sentinel');
|
|
config.sentinels.forEach(sentinel => {
|
assert(sentinel.host && sentinel.port,
|
`[egg-redis] 'host: ${sentinel.host}', 'port: ${sentinel.port}' are required on config`);
|
});
|
|
assert(config.name && config.password !== undefined && config.db !== undefined,
|
`[egg-redis] 'name of master: ${config.name}', 'password: ${config.password}', 'db: ${config.db}' are required on config`);
|
|
app.coreLogger.info('[egg-redis] sentinel connecting start');
|
client = new Redis(config);
|
} else {
|
assert(config.host && config.port && config.password !== undefined && config.db !== undefined,
|
`[egg-redis] 'host: ${config.host}', 'port: ${config.port}', 'password: ${config.password}', 'db: ${config.db}' are required on config`);
|
app.coreLogger.info('[egg-redis] server connecting redis://:***@%s:%s/%s',
|
config.host, config.port, config.db);
|
client = new Redis(config);
|
}
|
|
client.on('connect', () => {
|
app.coreLogger.info('[egg-redis] client connect success');
|
});
|
client.on('error', err => {
|
app.coreLogger.error('[egg-redis] client error: %s', err);
|
app.coreLogger.error(err);
|
});
|
|
app.beforeStart(async () => {
|
const index = count++;
|
if (config.weakDependent) {
|
app.coreLogger.info(`[egg-redis] instance[${index}] is weak dependent and won't block app start`);
|
client.once('ready', () => {
|
app.coreLogger.info(`[egg-redis] instance[${index}] status OK`);
|
});
|
return;
|
}
|
|
await awaitFirst(client, [ 'ready', 'error' ]);
|
app.coreLogger.info(`[egg-redis] instance[${index}] status OK, client ready`);
|
});
|
|
return client;
|
}
|