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ShallowTrace.java
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/*
* Copyright 2012 LinkedIn, 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.linkedin.parseq.trace;
import com.linkedin.parseq.internal.ArgumentUtil;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
/**
* A shallow trace is a trace without any relationship information. Use
* {@link ShallowTraceBuilder} to construct new instances of this class.
* <p/>
* This class is immutable and thread-safe.
*
* @author Chris Pettitt (cpettitt@linkedin.com)
* @author Chi Chan (ckchan@linkedin.com)
*/
public class ShallowTrace
{
private final String _name;
private final boolean _hidden;
private final boolean _systemHidden;
private final ResultType _resultType;
private final String _value;
private final Long _startNanos;
private final Long _pendingNanos;
private final Long _endNanos;
private final Map<String, String> _attributes;
/* package private */ ShallowTrace(final String name,
final boolean hidden,
final boolean systemHidden,
final ResultType resultType,
final String value,
final Long startNanos,
final Long pendingNanos,
final Long endNanos,
final Map<String, String> attributes)
{
assert name != null;
assert resultType != null;
_name = name;
_hidden = hidden;
_value = value;
_resultType = resultType;
_startNanos = startNanos;
_pendingNanos = pendingNanos;
_endNanos = endNanos;
_systemHidden = systemHidden;
if (!attributes.isEmpty())
{
Map<String, String> attributeMap = new HashMap<String, String>(attributes);
_attributes = Collections.unmodifiableMap(attributeMap);
}
else
{
_attributes = Collections.emptyMap();
}
switch (resultType)
{
case EARLY_FINISH:
if (value != null)
{
throw new IllegalArgumentException("value cannot be set if the task is finished early");
}
ArgumentUtil.notNull(startNanos, "startNanos");
ArgumentUtil.notNull(pendingNanos, "pendingNanos");
ArgumentUtil.notNull(endNanos, "endNanos");
break;
case ERROR:
case SUCCESS:
ArgumentUtil.notNull(startNanos, "startNanos");
ArgumentUtil.notNull(pendingNanos, "pendingNanos");
ArgumentUtil.notNull(endNanos, "endNanos");
break;
case UNFINISHED:
if (value != null)
{
throw new IllegalArgumentException("value cannot be set if the task is UNFINISHED");
}
break;
default:
throw new IllegalArgumentException("Unexpected result type: " + resultType);
}
if (startNanos != null && resultType != ResultType.UNFINISHED)
{
ArgumentUtil.notNull(pendingNanos, "pendingNanos");
ArgumentUtil.notNull(endNanos, "endNanos");
}
}
public String getName()
{
return _name;
}
public boolean getHidden()
{
return _hidden;
}
public boolean getSystemHidden()
{
return _systemHidden;
}
public String getValue()
{
return _value;
}
public ResultType getResultType()
{
return _resultType;
}
public Long getStartNanos()
{
return _startNanos;
}
public Long getPendingNanos()
{
return _pendingNanos;
}
public Long getEndNanos()
{
return _endNanos;
}
public Map<String,String> getAttributes()
{
return _attributes;
}
@Override
public boolean equals(Object o)
{
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
ShallowTrace that = (ShallowTrace) o;
if (_hidden != that._hidden) return false;
if (_systemHidden != that._systemHidden) return false;
if (_attributes != null ? !_attributes.equals(that._attributes) : that._attributes != null)
return false;
if (_endNanos != null ? !_endNanos.equals(that._endNanos) : that._endNanos != null)
return false;
if (!_name.equals(that._name)) return false;
if (_pendingNanos != null ? !_pendingNanos.equals(that._pendingNanos) : that._pendingNanos != null)
return false;
if (_resultType != that._resultType) return false;
if (_startNanos != null ? !_startNanos.equals(that._startNanos) : that._startNanos != null)
return false;
if (_value != null ? !_value.equals(that._value) : that._value != null)
return false;
return true;
}
@Override
public int hashCode()
{
int result = _name.hashCode();
result = 31 * result + (_hidden ? 1 : 0);
result = 31 * result + (_systemHidden ? 1 : 0);
result = 31 * result + _resultType.hashCode();
result = 31 * result + (_value != null ? _value.hashCode() : 0);
result = 31 * result + (_startNanos != null ? _startNanos.hashCode() : 0);
result = 31 * result + (_pendingNanos != null ? _pendingNanos.hashCode() : 0);
result = 31 * result + (_endNanos != null ? _endNanos.hashCode() : 0);
result = 31 * result + (_attributes != null ? _attributes.hashCode() : 0);
return result;
}
@Override
public String toString()
{
return "ShallowTrace{" +
"_name='" + _name + '\'' +
", _hidden=" + _hidden +
", _systemHidden=" + _systemHidden +
", _resultType=" + _resultType +
", _value='" + _value + '\'' +
", _startNanos=" + _startNanos +
", _pendingNanos=" + _pendingNanos +
", _endNanos=" + _endNanos +
", _attributes=" + _attributes +
'}';
}
}