90 lines
2.1 KiB
TypeScript
90 lines
2.1 KiB
TypeScript
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export type Environment = 'local' | 'test' | 'staging' | 'production' ;
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// interfaces
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import { Client as ElasticClient } from 'elasticsearch'
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export interface LogContext {
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zone?: string,
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containerName?: string
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environment: Environment
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}
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export type TLogSeverity = 'log' | 'info' | 'warn' | 'error' | 'fatal'
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export interface IStandardLogParams {
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message: string
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severity: string
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}
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export interface IElasticLogConstructorOptions {
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port: number
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domain: string
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ssl: boolean
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user?: string
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pass?: string
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logContext: LogContext
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}
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export class ElasticLog<T> {
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client: ElasticClient
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logContext: LogContext
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logScheduler = new LogScheduler()
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/**
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* sets up an instance of Elastic log
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* @param optionsArg
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*/
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constructor (optionsArg: IElasticLogConstructorOptions) {
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this.logContext = optionsArg.logContext
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this.client = new ElasticClient({
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host: this.computeHostString(optionsArg),
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log: 'trace'
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});
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};
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/**
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* computes the host string from the constructor options
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* @param optionsArg
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*/
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private computeHostString(optionsArg: IElasticLogConstructorOptions): string {
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let hostString = `${optionsArg.domain}:${optionsArg.port}`;
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if(optionsArg.user && optionsArg.pass) {
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hostString = `${optionsArg.user}:${optionsArg.pass}@${hostString}`
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}
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if(optionsArg.ssl) {
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hostString = `https://${hostString}`
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} else {
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hostString = `http://${hostString}`
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}
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return hostString;
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}
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log(logObject: IStandardLogParams) {
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const now = new Date()
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this.client.index({
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index: `logs-${now.getFullYear()}.${now.getMonth() + 1}.${now.getDate()}`,
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type: 'log',
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body: {
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'@timestamp': now.toISOString(),
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container: this.logContext.containerName,
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environment: this.logContext.environment,
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severity: logObject.severity,
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message: logObject.message
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}
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}, (error, response) => {
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if(error) {
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console.log(error)
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this.logScheduler.addFailedLog(logObject)
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}
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})
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}
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};
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export class LogScheduler {
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logStorage: any[]
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addFailedLog(objectArg: any | IStandardLogParams) {
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}
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}
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