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buffer events

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Signed-off-by: Jari Kolehmainen <jari.kolehmainen@gmail.com>
This commit is contained in:
Jari Kolehmainen 2020-03-23 19:42:21 +02:00
parent 6d3f20b9f6
commit e4826fdc7d
1 changed files with 19 additions and 7 deletions
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26
src/main/routes/watch.ts
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@ -10,6 +10,8 @@ class ApiWatcher {
private response: ServerResponse
private watchRequest: Request
private watch: Watch
private processor: NodeJS.Timeout
private eventBuffer: any[] = []
constructor(apiUrl: string, kubeConfig: KubeConfig, response: ServerResponse) {
this.apiUrl = apiUrl
@ -18,17 +20,30 @@ class ApiWatcher {
}
public start() {
if (this.processor) {
clearInterval(this.processor)
}
this.processor = setInterval(() => {
console.log(this.eventBuffer.length)
const events = this.eventBuffer.splice(0)
events.map(event => this.sendEvent(event))
this.response.flushHeaders()
}, 50)
this.watchRequest = this.watch.watch(this.apiUrl, {}, this.watchHandler.bind(this), this.doneHandler.bind(this))
}
public stop() {
if (!this.watchRequest) { return }
if (this.processor) {
clearInterval(this.processor)
}
logger.debug("Stopping watcher for api: " + this.apiUrl)
this.watchRequest.abort()
}
private watchHandler(phase: string, obj: RuntimeRawExtension) {
this.sendEvent({
this.eventBuffer.push({
type: phase,
object: obj
})
@ -47,14 +62,9 @@ class ApiWatcher {
this.start()
}
private sendEvent(evt: any, autoFlush = true) {
private sendEvent(evt: any) {
// convert to "text/event-stream" format
this.response.write(`data: ${JSON.stringify(evt)}\n\n`);
if (autoFlush) {
// eslint-disable-next-line @typescript-eslint/ban-ts-ignore
// @ts-ignore
this.response.flush()
}
}
}
@ -84,10 +94,12 @@ class WatchRoute extends LensApi {
})
request.raw.req.on("close", () => {
logger.debug("Watch request closed")
watchers.map(watcher => watcher.stop())
})
request.raw.req.on("end", () => {
logger.debug("Watch request ended")
watchers.map(watcher => watcher.stop())
})