apollo-node-client
v1.4.3
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Node.js Client for Apollo
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apollo-node-client
Node.js Client for Apollo
install
$ npm install apollo-node-client --save
Examples
Usage
实例化 ConfigService
const { ConfigService } = require('apollo-node-client');
const service = new ConfigService({
configServerUrl: 'http://localhost:8080/',
appId: 'SampleApp',
clusterName: 'default',
secret: 'cf86d564d10a46d4a5989dfdeed3a3a2'
});
获取默认 namespace
的配置(application
)
const config = await service.getAppConfig();
config.getAllConfig(); // Map(1) { 'mysql.user' => 'root' }
console.log(config.getProperty('mysql.user')); // root
console.log(config.getProperty('mysql.missing', 'default')); // default
获取 properties
格式 namespace
的配置
const config = await service.getConfig('application');
config.getAllConfig(); // Map(1) { 'mysql.user' => 'root' }
console.log(config.getProperty('mysql.user')); // root
console.log(config.getProperty('mysql.missing', 'default')); // default
获取 json
格式 namespace
的配置
const config = await service.getConfig('config.json');
config.getAllConfig(); // { mysql: { user: 'root' } }
console.log(config.getProperty('mysql.user')); // root
console.log(config.getProperty('mysql.missing', 'default')); // default
获取 xml/yml/yaml/txt
格式 namespace
的配置
const config = await service.getConfig('config.txt');
config.getAllConfig(); // txt config
console.log(config.getProperty('', 'default')); // txt config
console.log(config.getProperty()); // txt config
指定灰度发布的服务 ip
const config = await service.getConfig('application', '192.168.3.4');
config.getAllConfig(); // Map(1) { 'mysql.user' => 'root' }
console.log(config.getProperty('mysql.user')); // root
console.log(config.getProperty('mysql.missing', 'default')); // default
监听配置变化事件
config.addChangeListener((changeEvent) => {
for (const key of changeEvent.changedKeys()) {
const change = changeEvent.getChange(key);
if (change) {
console.log(`namespace: ${change.getNamespace()},
changeType: ${change.getChangeType()},
propertyName: ${change.getPropertyName()},
oldValue: ${change.getOldValue()},
newValue: ${change.getNewValue()}`);
}
}
});
API
Class: ConfigService
new ConfigService( options )
options
<Object>configServerUrl
<string> Apollo 配置服务的地址appId
<string> 应用的 appId[clusterName]
<string> 集群名[secret]
<string> 服务端密钥 access key
- Returns: ConfigService
configService.getAppConfig( [ ip ] )
[ip]
<string> 应用部署的机器ipReturns: Promise<PropertiesConfig> 默认的
namespace
为application
configService.getConfig( namespaceName, [ ip ] )
namespaceName
<string> Namespace的名字,以后缀名判断是什么类型格式的Config
。如果没有后缀名,默认为properties
,目前支持.json
,.properties
,.xml
,.yml
,.yaml
,.txt
[ip]
<string> 应用部署的机器ipReturns: Promise<PropertiesConfig | JSONConfig | PlainConfig>
Class: PropertiesConfig
propertiesConfig.getAllConfig()
- Returns: Map<string, string>
propertiesConfig.getProperty( key, [ defaultValue ] )
key
<string> 要获取的配置的key
[defaultValue]
<string> 默认值,当传入的key
不存在时,会返回defaultValue
Returns: undefined | string
propertiesConfig.addChangeListener( handle )
handle
( changeEvent: ConfigChangeEvent<string> ) => void 监听配置变化事件的回调函数Returns: void
Class: JSONConfig
jsonConfig.getAllConfig()
- Returns: JSONValueType
jsonConfig.getProperty( key, [ defaultValue ] )
key
<string> 要获取的配置的key
[defaultValue]
<string> 默认值,当传入的key
不存在时,会返回defaultValue
Returns: undefined | JSONValueType
jsonConfig.addChangeListener( handle )
handle
( changeEvent: ConfigChangeEvent<JSONValueType> ) => void 监听配置变化事件的回调函数Returns: void
Class: PlainConfig
plainConfig.getAllConfig()
- Returns: string
plainConfig.getProperty( key, [ defaultValue ] )
key
<string> 兼容其他类型的 Config,不做校验,传入任意key
都会返回整个配置文本内容[defaultValue]
<string> 默认值,当配置不存在时,会返回defaultValue
Returns: undefined | string
Class: ConfigChangeEvent
configChangeEvent.getNamespace()
- Returns: string
configChangeEvent.changedKeys()
- Returns: string[]
configChangeEvent.getChange()
- Returns: undefined | ConfigChange<T>
Class: ConfigChange<T>
configChange.getNamespace()
- Returns: string
configChange.getPropertyName()
- Returns: string
configChange.getOldValues()
- Returns: undefined | T
configChange.getNewValue()
- Returns: undefined | T
configChange.getChangeType()
- Returns: PropertyChangeType
Enum: PropertyChangeType
propertyChangeType.ADDED
propertyChangeType.MODIFIED
propertyChangeType.DELETED
Contributing
Contributions are always welcome!