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Merge pull request #46 from Omniaevo/develop
Log monitored topics to file beside system notifications
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,80 @@ | ||
| import os from "os"; | ||
| import path from "path"; | ||
| import fs from "fs"; | ||
| import * as moment from "moment"; | ||
|
|
||
| class MessageLogger { | ||
| #subPath = ""; | ||
| #basePath = ""; | ||
| #separator = path.sep; | ||
|
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| #writing = false; | ||
| #writingCache = []; | ||
|
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| constructor(connectionName = moment().valueOf().toString()) { | ||
| this.#subPath = this.#pathSafe(connectionName); | ||
| this.#basePath = os.homedir() + "/mqtt5-explorer-logs"; | ||
| } | ||
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| get logsFolder() { | ||
| return this.#basePath + this.#separator + this.#subPath; | ||
| } | ||
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| enqueue({ topic, payload, properties }) { | ||
| const now = moment(); | ||
| this.#writingCache.unshift({ | ||
| topic, | ||
| payload, | ||
| properties: properties ? JSON.stringify(properties) : "", | ||
| when: now.valueOf(), | ||
| date: now.format("YYYY-MM-DD HH:mm:ss.SSS"), | ||
| }); | ||
| } | ||
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| async startLogging() { | ||
| this.#writing = true; | ||
| this.#subPath += this.#separator + moment().format("YYYY-MM-DD_HH-mm-ss"); | ||
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| // Create folders path | ||
| fs.mkdirSync(this.logsFolder, { recursive: true }); | ||
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| while (this.#writing) { | ||
| if (this.#writingCache.length === 0) { | ||
| await this.#sleep(1000); | ||
| continue; | ||
| } | ||
|
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| const { topic, payload, properties, when, date } = | ||
| this.#writingCache.pop(); | ||
| const fileName = | ||
| this.logsFolder + this.#separator + this.#pathSafe(topic) + ".csv"; | ||
|
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| // Create file if not exists | ||
| if (!fs.existsSync(fileName)) { | ||
| fs.writeFileSync(fileName, "Timestamp;Date;Value;Properties\n", { | ||
| flag: "w", | ||
| }); | ||
| } | ||
|
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| // Update log file | ||
| fs.writeFileSync(fileName, `${when};${date};${payload};${properties}\n`, { | ||
| flag: "a", | ||
| }); | ||
| } | ||
| } | ||
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| stopLogging() { | ||
| this.#writing = false; | ||
| this.#writingCache = []; | ||
| } | ||
|
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| #pathSafe = (topic) => { | ||
| return topic?.replace(/\//g, "_") || "unknown-topic"; | ||
| }; | ||
|
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| #sleep = (ms) => { | ||
| return new Promise((resolve) => setTimeout(resolve, ms)); | ||
| }; | ||
| } | ||
|
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| export default MessageLogger; |
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