monorepo/services/moleculer.config.ts

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'use strict';
import { BrokerOptions, Errors, MetricRegistry, ServiceBroker } from 'moleculer'
/**
* Moleculer ServiceBroker configuration file
*
* More info about options:
* https://moleculer.services/docs/0.14/configuration.html
*
*
* Overwriting options in production:
* ================================
* You can overwrite any option with environment variables.
* For example to overwrite the 'logLevel' value, use `LOGLEVEL=warn` env var.
* To overwrite a nested parameter, e.g. retryPolicy.retries, use `RETRYPOLICY_RETRIES=10` env var.
*
* To overwrite brokers deeply nested default options, which are not presented in 'moleculer.config.js',
* use the `MOL_` prefix and double underscore `__` for nested properties in .env file.
* For example, to set the cacher prefix to `MYCACHE`, you should declare an env var as `MOL_CACHER__OPTIONS__PREFIX=mycache`.
* It will set this:
* {
* cacher: {
* options: {
* prefix: 'mycache'
* }
* }
* }
*/
const brokerConfig: BrokerOptions = {
// Namespace of nodes to segment your nodes on the same network.
namespace: 'red-plateaus',
// Unique node identifier. Must be unique in a namespace.
nodeID: null,
// Custom metadata store. Store here what you want. Accessing: `this.broker.metadata`
metadata: {},
// Enable/disable logging or use custom logger. More info: https://moleculer.services/docs/0.14/logging.html
// Available logger types: 'Console', 'File', 'Pino', 'Winston', 'Bunyan', 'debug', 'Log4js', 'Datadog'
logger: {
type: 'Console',
options: {
// Using colors on the output
colors: true,
// Print module names with different colors (like docker-compose for containers)
moduleColors: false,
// Line formatter. It can be 'json', 'short', 'simple', 'full', a `Function` or a template string like '{timestamp} {level} {nodeID}/{mod}: {msg}'
formatter: 'full',
// Custom object printer. If not defined, it uses the `util.inspect` method.
objectPrinter: null,
// Auto-padding the module name in order to messages begin at the same column.
autoPadding: false,
},
},
// Default log level for built-in console logger. It can be overwritten in logger options above.
// Available values: trace, debug, info, warn, error, fatal
logLevel: 'info',
// Define transporter.
// More info: https://moleculer.services/docs/0.14/networking.html
// Note: During the development, you don't need to define it because all services will be loaded locally.
// In production you can set it via `TRANSPORTER=nats://localhost:4222` environment variable.
transporter: null,
// Define a cacher.
// More info: https://moleculer.services/docs/0.14/caching.html
cacher: {
type: 'Memory',
options: {
maxParamsLength: 60,
ttl: 60
}
},
// Define a serializer.
// Available values: 'JSON', 'Avro', 'ProtoBuf', 'MsgPack', 'Notepack', 'Thrift'.
// More info: https://moleculer.services/docs/0.14/networking.html#Serialization
serializer: 'Avro',
// Number of milliseconds to wait before reject a request with a RequestTimeout error. Disabled: 0
requestTimeout: 10 * 1000,
// Retry policy settings. More info: https://moleculer.services/docs/0.14/fault-tolerance.html#Retry
retryPolicy: {
// Enable feature
enabled: false,
// Count of retries
retries: 5,
// First delay in milliseconds.
delay: 100,
// Maximum delay in milliseconds.
maxDelay: 1000,
// Backoff factor for delay. 2 means exponential backoff.
factor: 2,
// A function to check failed requests.
check: (err: Errors.MoleculerError) => err && !!err.retryable,
},
// Limit of calling level. If it reaches the limit, broker will throw an MaxCallLevelError error. (Infinite loop protection)
maxCallLevel: 100,
// Number of seconds to send heartbeat packet to other nodes.
heartbeatInterval: 10,
// Number of seconds to wait before setting node to unavailable status.
heartbeatTimeout: 30,
// Cloning the params of context if enabled. High performance impact, use it with caution!
contextParamsCloning: false,
// Tracking requests and waiting for running requests before shuting down. More info: https://moleculer.services/docs/0.14/context.html#Context-tracking
tracking: {
// Enable feature
enabled: false,
// Number of milliseconds to wait before shuting down the process.
shutdownTimeout: 5000,
},
// Disable built-in request & emit balancer. (Transporter must support it, as well.). More info: https://moleculer.services/docs/0.14/networking.html#Disabled-balancer
disableBalancer: false,
// Settings of Service Registry. More info: https://moleculer.services/docs/0.14/registry.html
registry: {
// Define balancing strategy. More info: https://moleculer.services/docs/0.14/balancing.html
// Available values: 'RoundRobin', 'Random', 'CpuUsage', 'Latency', 'Shard'
strategy: 'RoundRobin',
// Enable local action call preferring. Always call the local action instance if available.
preferLocal: true,
},
// Settings of Circuit Breaker. More info: https://moleculer.services/docs/0.14/fault-tolerance.html#Circuit-Breaker
circuitBreaker: {
// Enable feature
enabled: false,
// Threshold value. 0.5 means that 50% should be failed for tripping.
threshold: 0.5,
// Minimum request count. Below it, CB does not trip.
minRequestCount: 20,
// Number of seconds for time window.
windowTime: 60,
// Number of milliseconds to switch from open to half-open state
halfOpenTime: 10 * 1000,
// A function to check failed requests.
check: (err: Errors.MoleculerError) => err && err.code >= 500,
},
// Settings of bulkhead feature. More info: https://moleculer.services/docs/0.14/fault-tolerance.html#Bulkhead
bulkhead: {
// Enable feature.
enabled: false,
// Maximum concurrent executions.
concurrency: 10,
// Maximum size of queue
maxQueueSize: 100,
},
// Enable action & event parameter validation. More info: https://moleculer.services/docs/0.14/validating.html
validator: true,
errorHandler: null,
// Enable/disable built-in metrics function. More info: https://moleculer.services/docs/0.14/metrics.html
metrics: {
enabled: false,
// Available built-in reporters: 'Console', 'CSV', 'Event', 'Prometheus', 'Datadog', 'StatsD'
reporter: {
type: '',
},
},
// Enable built-in tracing function. More info: https://moleculer.services/docs/0.14/tracing.html
tracing: {
enabled: false,
// Available built-in exporters: 'Console', 'Datadog', 'Event', 'EventLegacy', 'Jaeger', 'Zipkin'
exporter: {
type: '', // Console exporter is only for development!
},
},
// Register custom middlewares
middlewares: [],
// Register custom REPL commands.
replCommands: null,
/*
// Called after broker created.
created : (broker: ServiceBroker): void => {},
// Called after broker started.
started: async (broker: ServiceBroker): Promise<void> => {},
stopped: async (broker: ServiceBroker): Promise<void> => {},
*/
};
export = brokerConfig;