@heroku-cli/plugin-ps
Version:
ps core plugin for Heroku CLI
62 lines (61 loc) • 3.01 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
const command_1 = require("@heroku-cli/command");
const cli_ux_1 = require("cli-ux");
const METRICS_HOST = 'api.metrics.heroku.com';
class Enable extends command_1.Command {
async run() {
const { flags } = this.parse(Enable);
cli_ux_1.cli.action.start('Enabling dyno autoscaling');
const [appResponse, formationResponse] = await Promise.all([
this.heroku.get(`/apps/${flags.app}`),
this.heroku.get(`/apps/${flags.app}/formation`)
]);
const app = appResponse.body;
const formations = formationResponse.body;
const webFormation = formations.find((f) => f.type === 'web');
if (!webFormation)
throw new Error(`${flags.app} does not have any web dynos to scale`);
// we only allow this feature with Performance dynos
const { size } = webFormation;
if (!/^Performance/.test(size || ''))
throw new Error('Autoscaling is only available with Performance dynos');
const { body } = await this.heroku.get(`/apps/${app.id}/formation/web/monitors`, {
hostname: METRICS_HOST
});
const scaleMonitor = (body || []).find((m) => m.action_type === 'scale');
let updatedValues = {
is_active: true,
action_type: 'scale',
notification_period: 1440,
op: 'GREATER_OR_EQUAL',
period: 1,
notification_channels: flags.notifications ? ['app'] : []
};
if (scaleMonitor) {
updatedValues = Object.assign({}, updatedValues, { min_quantity: flags.min || scaleMonitor.min_quantity, max_quantity: flags.max || scaleMonitor.max_quantity, value: flags.p95 ? flags.p95 : scaleMonitor.value });
await this.heroku.patch(`/apps/${app.id}/formation/web/monitors/${scaleMonitor.id}`, {
body: updatedValues,
hostname: METRICS_HOST
});
}
else {
updatedValues = Object.assign({}, updatedValues, { name: 'LATENCY_SCALE', min_quantity: flags.min, max_quantity: flags.max, value: flags.p95 ? flags.p95 : 1000 });
await this.heroku.post(`/apps/${app.id}/formation/web/monitors`, {
hostname: METRICS_HOST,
body: updatedValues
});
}
cli_ux_1.cli.action.stop();
}
}
Enable.description = 'enable web dyno autoscaling';
Enable.flags = {
app: command_1.flags.app({ required: true }),
remote: command_1.flags.remote(),
min: command_1.flags.integer({ required: true, description: 'minimum number of dynos' }),
max: command_1.flags.integer({ required: true, description: 'maximum number of dynos' }),
p95: command_1.flags.integer({ description: 'desired p95 response time' }),
notifications: command_1.flags.boolean({ description: 'receive email notifications when the max dyno limit is reached' })
};
exports.default = Enable;