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/*
* Copyright (C) 2011 The Android Open Source Project
*
* 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.android.server;
import com.google.android.collect.Lists;
import java.util.ArrayList;
/**
* Parsed event from native side of {@link NativeDaemonConnector}.
*/
public class NativeDaemonEvent {
// TODO: keep class ranges in sync with ResponseCode.h
// TODO: swap client and server error ranges to roughly mirror HTTP spec
private final int mCode;
private final String mMessage;
private final String mRawEvent;
private NativeDaemonEvent(int code, String message, String rawEvent) {
mCode = code;
mMessage = message;
mRawEvent = rawEvent;
}
public int getCode() {
return mCode;
}
public String getMessage() {
return mMessage;
}
@Deprecated
public String getRawEvent() {
return mRawEvent;
}
@Override
public String toString() {
return mRawEvent;
}
/**
* Test if event represents a partial response which is continued in
* additional subsequent events.
*/
public boolean isClassContinue() {
return mCode >= 100 && mCode < 200;
}
/**
* Test if event represents a command success.
*/
public boolean isClassOk() {
return mCode >= 200 && mCode < 300;
}
/**
* Test if event represents a remote native daemon error.
*/
public boolean isClassServerError() {
return mCode >= 400 && mCode < 500;
}
/**
* Test if event represents a command syntax or argument error.
*/
public boolean isClassClientError() {
return mCode >= 500 && mCode < 600;
}
/**
* Test if event represents an unsolicited event from native daemon.
*/
public boolean isClassUnsolicited() {
return mCode >= 600 && mCode < 700;
}
/**
* Verify this event matches the given code.
*
* @throws IllegalStateException if {@link #getCode()} doesn't match.
*/
public void checkCode(int code) {
if (mCode != code) {
throw new IllegalStateException("Expected " + code + " but was: " + this);
}
}
/**
* Parse the given raw event into {@link NativeDaemonEvent} instance.
*
* @throws IllegalArgumentException when line doesn't match format expected
* from native side.
*/
public static NativeDaemonEvent parseRawEvent(String rawEvent) {
final int splitIndex = rawEvent.indexOf(' ');
if (splitIndex == -1) {
throw new IllegalArgumentException("unable to find ' ' separator");
}
final int code;
try {
code = Integer.parseInt(rawEvent.substring(0, splitIndex));
} catch (NumberFormatException e) {
throw new IllegalArgumentException("problem parsing code", e);
}
final String message = rawEvent.substring(splitIndex + 1);
return new NativeDaemonEvent(code, message, rawEvent);
}
/**
* Filter the given {@link NativeDaemonEvent} list, returning
* {@link #getMessage()} for any events matching the requested code.
*/
public static String[] filterMessageList(NativeDaemonEvent[] events, int matchCode) {
final ArrayList<String> result = Lists.newArrayList();
for (NativeDaemonEvent event : events) {
if (event.getCode() == matchCode) {
result.add(event.getMessage());
}
}
return result.toArray(new String[result.size()]);
}
}
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