open-nomad/ui/app/utils/classes/stream-logger.js

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import EmberObject, { computed } from '@ember/object';
import { task } from 'ember-concurrency';
import TextDecoder from 'nomad-ui/utils/classes/text-decoder';
import { decode } from 'nomad-ui/utils/stream-frames';
import AbstractLogger from './abstract-logger';
import { fetchFailure } from './log';
import classic from 'ember-classic-decorator';
@classic
export default class StreamLogger extends EmberObject.extend(AbstractLogger) {
reader = null;
Upgrade Ember and friends 3.28 (#12215) * chore: upgrade forward compatible packages * chore: v3.20.2...v3.24.0 * chore: silence string prototype extension deprecation * refact: don't test clicking disabled button job-list Recent test-helper upgrades will guard against clicking disabled buttons as this is not something that real users can do. We need to change our tests accordingly. * fix: await async test helper `expectError` We have to await this async test function otherwise the test's rendering context will be torn down before we run assertions against it. * fix: don't try to click disabled two-step-button Recent test-helper updates prohibit clicking disabled buttons. We need to adapt the tests accordingly. * fix: recommendation-accordion Use up-to-date semantics for handling list-accordion closing in recommendation-accordion. * fixes toggling recommendation-accordion toggle. * fix: simple-unless linting error application.hbs There's no reason to use unless here - we can use if instead. * fix: no-quoteless-attributes recommendation accordion * fix: no-quoteless-attributes recommendation-chart * fix: allow `unless` - global-header.hbs This is a valid use of unless in our opinion. * fix: allow unless in job-diff This is not a great use for unless but we don't want to change this behavior atm. * fix: no-attrs-in-components list-pager There is no need to use this.attrs in classic components. When we will convert to glimmer we will use `@`-instead. * fix: simple-unless job/definition We can convert to a simple if here. * fix: allow inline-styles stats-box component To make linter happy. * fix: disable no-action and no-invalid-interactive Will be adressed in follow-up PRs. * chore: update ember-classic-decorator to latest * chore: upgrade ember-can to latest * chore: upgrade ember-composable-helpers to latest * chore: upgrade ember-concurrency * fix: recomputation deprecation `Trigger` schedule `do` on actions queue to work around recomputation deprecation when triggering Trigger on `did-insert`. * chore: upgrade ember-cli-string-helpers * chore: upgrade ember-copy * chore: upgrade ember-data-model-fragments * chore: upgrade ember-deprecation-workflow * chore: upgrade ember-inline-svg * chore: upgrade ember-modifier * chore: upgrade ember-truth-helpers * chore: upgrade ember-moment & ember-cli-moment-shim * chore: upgrade ember-power-select * chore: upgrade ember-responsive * chore: upgrade ember-sinon * chore: upgrade ember-cli-mirage For now we will stay on 2.2 - upgrades > 2.3 break the build. * chore: upgrade 3.24.0 to 3.28.5 * fix: add missing classic decorators on adapters * fix: missing classic decorators to serializers * fix: don't reopen Ember.Object anymore * fix: remove unused useNativeEvents ember-cli-page-objects doesn't provide this method anymore * fix: add missing attributeBindings for test-selectors ember-test-selectors doesn't provides automatic bindings for data-test-* attributes anymore. * fix: classic decorator for application serializer test * fix: remove `removeContext` from tests. It is unneeded and ember-cli-page-objects doesn't provides this method anymore. * fix: remove deprecations `run.*`-invocations * fix: `collapseWhitespace` in optimize test * fix: make sure to load async relationship before access * fix: dependent keys for relationship computeds We need to add `*.isFulfilled` as dependent keys for computeds that access async relationships. * fix: `computed.read`-invocations use `read` instead * chore: prettify templates * fix: use map instead of mapBy ember-cli-page-object Doesn't work with updated ember-cli-page-object anymore. * fix: remove remaining deprecated `run.*`-calls * chore: add more deprecations deprecation-workflow * fix: `implicit-injection`-deprecation All routes that add watchers will need to inject the store-service as the store service is internally used in watchers. * fix: more implicit injection deprecations * chore: silence implicit-injection deprecation We can tackle the deprecation when we find the time. * fix: new linting errors after upgrade * fix: remove merge conflicts prettierignore * chore: upgrade to run node 12.22 when building binaries
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get isSupported() {
return !!window.ReadableStream;
}
@computed()
get additionalParams() {
return {
follow: true,
};
}
start() {
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return this.poll.perform();
}
stop() {
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const reader = this.reader;
if (reader) {
reader.cancel();
}
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return this.poll.cancelAll();
}
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@task(function* () {
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const url = this.fullUrl;
const logFetch = this.logFetch;
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const reader = yield logFetch(url).then((res) => {
const reader = res.body.getReader();
// It's possible that the logger was stopped between the time
// polling was started and the log request responded.
// If the logger was stopped, the reader needs to be immediately
// canceled to prevent an endless request running in the background.
if (this.poll.isRunning) {
return reader;
}
reader.cancel();
}, fetchFailure(url));
if (!reader) {
return;
}
this.set('reader', reader);
let streamClosed = false;
let buffer = '';
const decoder = new TextDecoder();
while (!streamClosed) {
yield reader.read().then(({ value, done }) => {
streamClosed = done;
// There is no guarantee that value will be a complete JSON object,
// so it needs to be buffered.
buffer += decoder.decode(value, { stream: true });
// Only when the buffer contains a close bracket can we be sure the buffer
// is in a complete state
if (buffer.indexOf('}') !== -1) {
// The buffer can be one or more complete frames with additional text for the
// next frame
const [, chunk, newBuffer] = buffer.match(/(.*\})(.*)$/);
// Peel chunk off the front of the buffer (since it represents complete frames)
// and set the buffer to be the remainder
buffer = newBuffer;
// Assuming the logs endpoint never returns nested JSON (it shouldn't), at this
// point chunk is a series of valid JSON objects with no delimiter.
const { offset, message } = decode(chunk);
if (message) {
this.set('endOffset', offset);
this.write(message);
}
}
});
}
})
poll;
}