mirror of
https://gitlab.com/wgp/dougal/software.git
synced 2025-12-06 09:57:09 +00:00
6a21ddd1cd
The events listener now uses a proper self-consuming queue and the event handlers have been rewritten accordingly. The way this works is that running init() on the handlers library instantiates the handlers and returns two higher-order functions, prepare() and despatch(). A call to the latter of these is appended to the queue with each new incoming event. The handlers have access to a context object (ctx) which may be used to persist data between calls and/or exchange data between handlers. This is used notably to give the handlers access to project configurations, which are themselves refreshed by a project configuration change handler (DetectProjectConfigurationChange).
89 lines
2.7 KiB
JavaScript
89 lines
2.7 KiB
JavaScript
const { schema2pid } = require('../../lib/db/connection');
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const { event } = require('../../lib/db');
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const { ALERT, ERROR, WARNING, NOTICE, INFO, DEBUG } = require('DOUGAL_ROOT/debug')(__filename);
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class DetectSOLEOL {
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author = `*${this.constructor.name}*`;
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prev = null;
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constructor () {
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DEBUG(`${this.author} instantiated`);
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}
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async run (data, ctx) {
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if (!data || data.channel !== "realtime") {
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return;
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}
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if (!(data.payload && data.payload.new && data.payload.new.meta)) {
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return;
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}
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if (!this.prev) {
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DEBUG("Initialising `prev`");
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this.prev = data;
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return;
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}
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try {
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DEBUG("Running");
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// DEBUG("%j", data);
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const cur = data?.payload?.new?.meta;
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const prev = this.prev?.payload?.new?.meta;
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const sequence = Number(cur._sequence);
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// DEBUG("%j", prev);
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// DEBUG("%j", cur);
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DEBUG("prv.lineName: %s\ncur.lineName: %s\nprv._sequence: %s\ncur._sequence: %s\nprv.lineStatus: %s\ncur.lineStatus: %s", prev.lineName, cur.lineName, prev._sequence, cur._sequence, prev.lineStatus, cur.lineStatus);
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if (prev.lineName == cur.lineName && prev._sequence == cur._sequence &&
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prev.lineStatus != "online" && cur.lineStatus == "online" && sequence) {
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INFO("Transition to ONLINE detected");
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// We must use schema2pid because the pid may not have been
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// populated for this event.
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const projectId = await schema2pid(cur._schema ?? prev._schema);
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const labels = ["FSP", "FGSP"];
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const remarks = `SEQ ${cur._sequence}, SOL ${cur.lineName}, BSP: ${(cur.speed*3.6/1.852).toFixed(1)} kt, Water depth: ${Number(cur.waterDepth).toFixed(0)} m.`;
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const payload = {
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type: "sequence",
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sequence,
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point: cur._point,
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remarks,
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labels,
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meta: {auto: true, author: `*${this.constructor.name}*`}
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}
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INFO("Posting event", projectId, payload);
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await event.post(projectId, payload);
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} else if (prev.lineName == cur.lineName && prev._sequence == cur._sequence &&
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prev.lineStatus == "online" && cur.lineStatus != "online" && sequence) {
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INFO("Transition to OFFLINE detected");
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const projectId = await schema2pid(prev._schema ?? cur._schema);
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const labels = ["LSP", "LGSP"];
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const remarks = `SEQ ${cur._sequence}, EOL ${cur.lineName}, BSP: ${(cur.speed*3.6/1.852).toFixed(1)} kt, Water depth: ${Number(cur.waterDepth).toFixed(0)} m.`;
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const payload = {
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type: "sequence",
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sequence,
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point: cur._point,
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remarks,
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labels,
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meta: {auto: true, author: `*${this.constructor.name}*`}
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}
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INFO("Posting event", projectId, payload);
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await event.post(projectId, payload);
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}
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} catch (err) {
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DEBUG(`${this.author} error`, err);
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throw err;
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} finally {
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this.prev = data;
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}
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}
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}
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module.exports = DetectSOLEOL;
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