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Jersey core server implementation
/*
* Copyright (c) 2013, 2018 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0, which is available at
* http://www.eclipse.org/legal/epl-2.0.
*
* This Source Code may also be made available under the following Secondary
* Licenses when the conditions for such availability set forth in the
* Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
* version 2 with the GNU Classpath Exception, which is available at
* https://www.gnu.org/software/classpath/license.html.
*
* SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
*/
package org.glassfish.jersey.server.internal.monitoring;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import org.glassfish.jersey.server.monitoring.ExceptionMapperStatistics;
/**
* Exception mapper statistics.
*
* @author Miroslav Fuksa
*/
final class ExceptionMapperStatisticsImpl implements ExceptionMapperStatistics {
/**
* Builder of exception mapper statistics.
*
* This builder does not need to be threadsafe since it's called only from the jersey-background-task-scheduler.
*/
static class Builder {
private Map, Long> exceptionMapperExecutionCountMap = new HashMap<>();
private long successfulMappings;
private long unsuccessfulMappings;
private long totalMappings;
private ExceptionMapperStatisticsImpl cached;
/**
* Add mappings.
*
* @param success True if mappings were successful.
* @param count Number of mappings.
*/
void addMapping(final boolean success, final int count) {
cached = null;
totalMappings++;
if (success) {
successfulMappings += count;
} else {
unsuccessfulMappings += count;
}
}
/**
* Add an execution of exception mapper.
*
* @param mapper Exception mapper.
* @param count Number of executions of the {@code mapper}.
*/
void addExceptionMapperExecution(final Class mapper, final int count) {
cached = null;
Long cnt = exceptionMapperExecutionCountMap.get(mapper);
cnt = cnt == null ? count : cnt + count;
exceptionMapperExecutionCountMap.put(mapper, cnt);
}
/**
* Build an instance of exception mapper statistics.
*
* @return New instance of exception mapper statistics.
*/
public ExceptionMapperStatisticsImpl build() {
if (cached == null) {
cached = new ExceptionMapperStatisticsImpl(new HashMap<>(this.exceptionMapperExecutionCountMap),
successfulMappings, unsuccessfulMappings, totalMappings);
}
return cached;
}
}
private final Map, Long> exceptionMapperExecutionCount;
private final long successfulMappings;
private final long unsuccessfulMappings;
private final long totalMappings;
private ExceptionMapperStatisticsImpl(final Map, Long> exceptionMapperExecutionCount, final long successfulMappings,
final long unsuccessfulMappings, final long totalMappings) {
this.exceptionMapperExecutionCount = Collections.unmodifiableMap(exceptionMapperExecutionCount);
this.successfulMappings = successfulMappings;
this.unsuccessfulMappings = unsuccessfulMappings;
this.totalMappings = totalMappings;
}
@Override
public Map, Long> getExceptionMapperExecutions() {
return exceptionMapperExecutionCount;
}
@Override
public long getSuccessfulMappings() {
return successfulMappings;
}
@Override
public long getUnsuccessfulMappings() {
return unsuccessfulMappings;
}
@Override
public long getTotalMappings() {
return totalMappings;
}
@Override
public ExceptionMapperStatistics snapshot() {
// snapshot functionality not yet implemented
return this;
}
}