Global Config
Pandora.js designed a set of configuration files, hoping to isolate the configuration of the application in different global scenario, causing the same results.
Pandora. js designed a simple and efficient configuration coverage mechanism that users can make some changes to cover default behavior.
We injected the configuration package with the PANDORA_CONFIG environment variable, this configuration package can be directly require like a file, or a npm package.
PANDORA_CONFIG=pandora-ali pandora start .
PANDORA_CONFIG=./index.js pandora start .
The content of the file: Only write the part which you want to override
Load multiple configurations from the command line
In essence, cover configuration is just cover the object from other configuration file, so only need to split file path.
Notice: Pandora.js uses : as a delimiter to split multiple paths
$ export PANDORA_CONFIG=pandora-ali:./index.js
$ pandora start
Default Configuration
This file maintained at default.ts.
Pandora.js provides a set of default configuration to ensure start correctly, By default there are some standard content:
- actuator - Monitoring config, basic is EndPoints
- reporter - report monitoring data
- environment - standard environment implementation
Based on these keys, covering, adding operations to modify configuration. Here is the default configuration, it may be changed in code.
All of the following free variables (that is, not declared, such as DefaultEnvironment) are all available via require('dorapan') or require('pandora').
export default {
// Config Environment Implementation
environment: DefaultEnvironment,
actuator: {
// Config actuator's RESTFul server
http: {
enabled: true,
port: 7002, // listen on 7002 by default
},
// Config EndPoints
endPoint: {
// Config error collection endPoint
error: {
enabled: true,
target: ErrorEndPoint,
resource: ErrorResource,
initConfig: {
// Errors cache size, how many recent errors to cache
maxErrorCount: 100
}
},
// Config health check endPoint
health: {
enabled: true,
target: HealthEndPoint,
resource: HealthResource,
initConfig: {
// HTTP Check
port: {
enabled: true,
checkUrl: `http://127.1:6001`
},
// Disk Check
disk_space: {
enabled: true,
rate: 80,
}
}
},
// Config application info collection endPoint
info: {
enabled: true,
target: InfoEndPoint,
resource: InfoResource,
},
// Config process info collection endPoint
process: {
enabled: true,
target: ProcessEndPoint,
resource: ProcessResource,
},
// Config custom metrics endPoint
metrics: {
enabled: true,
target: MetricsEndPoint,
resource: MetricsResource,
initConfig: {
collector: NormalMetricsCollector
}
},
// Config trace EndPoint
trace: {
enabled: true,
target: TraceEndPoint,
resource: TraceResource,
initConfig: {
// Traces cache size, how many recent errors to cache
cacheSize: 1000,
// Sampling rate
rate: process.env.NODE_ENV !== 'production' ? 100 : 10,
// If the trace with the highest priority is out of the sample rate limit,
// such as a wrong trace.
priority: true
}
}
},
},
// Config monitoring data reporters
reporter: {
file: {
enabled: true,
// Default implementation is FileMetricsManagerReporter
// FileMetricsManagerReporter write Metrics to ~/logs/pandorajs/metrics.log as a log file.
target: FileMetricsManagerReporter,
interval: 5
}
},
// Config application logs
logger: {
// log directory
logsDir: join(homedir(), 'logs'),
// Log configuration for each application, basically stdout
appLogger: {
// Please make sure you do not change this configuration by default without output to the stdout of daemon
stdoutLevel: 'NONE',
// Default record INFO information, such as application start or stop, is recommended to keep INFO
level: 'INFO'
},
// Service log is scattered into a single log file, it is recommended to keep false
isolatedServiceLogger: false
}
};