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// Copyright 2015 The Bazel Authors. All rights reserved.
//
// 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.devtools.build.lib.runtime;
import com.google.common.eventbus.Subscribe;
import com.google.devtools.build.lib.events.Event;
import com.google.devtools.build.lib.pkgcache.LoadingPhaseCompleteEvent;
import com.google.devtools.build.lib.util.io.AnsiTerminal;
import com.google.devtools.build.lib.util.io.OutErr;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.util.logging.Logger;
/**
* An experimental new output stream.
*/
public class ExperimentalEventHandler extends BlazeCommandEventHandler {
private static Logger LOG = Logger.getLogger(ExperimentalEventHandler.class.getName());
private final AnsiTerminal terminal;
private final boolean debugAllEvents;
public final int terminalWidth;
public ExperimentalEventHandler(OutErr outErr, BlazeCommandEventHandler.Options options) {
super(outErr, options);
this.terminal = new AnsiTerminal(outErr.getErrorStream());
this.terminalWidth = (options.terminalColumns > 0 ? options.terminalColumns : 80);
this.debugAllEvents = options.experimentalUiDebugAllEvents;
}
@Override
public void handle(Event event) {
// Debugging only: show all events visible to the new UI.
if (debugAllEvents) {
try {
outErr.getOutputStream().write((event + "\n").getBytes(StandardCharsets.UTF_8));
outErr.getOutputStream().flush();
} catch (IOException e) {
LOG.warning("IO Error writing to output stream: " + e);
}
return;
}
// The actual new UI.
}
@Subscribe
public void loadingComplete(LoadingPhaseCompleteEvent event) {
try {
terminal.textGreen();
terminal.writeString("INFO:");
terminal.resetTerminal();
terminal.writeString(" " + event.getTargets().size() + " Target(s)\n");
} catch (IOException e) {
LOG.warning("IO Error writing to output stream: " + e);
}
}
public void resetTerminal() {
try {
terminal.resetTerminal();
} catch (IOException e) {
LOG.warning("IO Error writing to user terminal: " + e);
}
}
}
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