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gapic: Check for updates every 8 hours
Unless the user has opted out of checking.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,80 @@ | ||
| /* | ||
| * Copyright (C) 2017 Google Inc. | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
| package com.google.gapid.util; | ||
|
|
||
| import com.google.common.util.concurrent.ListenableFuture; | ||
| import com.google.gapid.models.Settings; | ||
| import com.google.gapid.proto.service.Service.Release; | ||
| import com.google.gapid.server.Client; | ||
| import java.util.Date; | ||
| import java.util.concurrent.ExecutionException; | ||
| import java.util.concurrent.TimeUnit; | ||
|
|
||
| /** | ||
| * Utility class for checking for new releases of GAPID. | ||
| */ | ||
| public class UpdateWatcher { | ||
| private static final int CHECK_INTERVAL_HOURS = 8; | ||
| private static final long CHECK_INTERVAL_MS = CHECK_INTERVAL_HOURS * 60 * 60 * 1000; | ||
| private static final boolean INCLUDE_PRE_RELEASES = true; | ||
|
|
||
| private final Settings settings; | ||
| private final Client client; | ||
| private final Listener listener; | ||
|
|
||
| /** Callback interface */ | ||
| public interface Listener { | ||
| /** Called whenever a new release is found. */ | ||
| void onNewReleaseAvailable(Release release); | ||
| } | ||
|
|
||
| public UpdateWatcher(Settings settings, Client client, Listener listener) { | ||
| this.settings = settings; | ||
| this.client = client; | ||
| this.listener = listener; | ||
| if (settings.updateAvailable) { | ||
| Scheduler.EXECUTOR.schedule(this::doCheck, 0, TimeUnit.MILLISECONDS); | ||
| } else { | ||
| scheduleCheck(); | ||
| } | ||
| } | ||
|
|
||
| private void scheduleCheck() { | ||
| long now = new Date().getTime(); | ||
| long timeSinceLastUpdateMS = now - settings.lastCheckForUpdates; | ||
| long delay = Math.max(CHECK_INTERVAL_MS - timeSinceLastUpdateMS, 0); | ||
| Scheduler.EXECUTOR.schedule(this::doCheck, delay, TimeUnit.MILLISECONDS); | ||
| } | ||
|
|
||
| private void doCheck() { | ||
| if (settings.autoCheckForUpdates) { | ||
| ListenableFuture<Release> future = client.checkForUpdates(INCLUDE_PRE_RELEASES); | ||
| settings.updateAvailable = false; | ||
| try { | ||
| Release release = future.get(); | ||
| if (release != null) { | ||
| settings.updateAvailable = true; | ||
| listener.onNewReleaseAvailable(release); | ||
| } | ||
| } catch (InterruptedException | ExecutionException e) { | ||
| /* never mind */ | ||
| } | ||
| } | ||
| settings.lastCheckForUpdates = new Date().getTime(); | ||
| settings.save(); | ||
| scheduleCheck(); | ||
| } | ||
| } |
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