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JSONMeasurementsExporter.java
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Created
Fri, Jul 26, 12:15
Size
2 KB
Mime Type
text/x-java
Expires
Sun, Jul 28, 12:15 (1 d, 21 h)
Engine
blob
Format
Raw Data
Handle
19360735
Attached To
R7507 YCSB
JSONMeasurementsExporter.java
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/**
* Copyright (c) 2010-2016 Yahoo! Inc., 2017 YCSB contributors All rights reserved.
* <p>
* 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
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* 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. See accompanying
* LICENSE file.
*/
package
com.yahoo.ycsb.measurements.exporter
;
import
org.codehaus.jackson.JsonFactory
;
import
org.codehaus.jackson.JsonGenerator
;
import
org.codehaus.jackson.util.DefaultPrettyPrinter
;
import
java.io.BufferedWriter
;
import
java.io.IOException
;
import
java.io.OutputStream
;
import
java.io.OutputStreamWriter
;
/**
* Export measurements into a machine readable JSON file.
*/
public
class
JSONMeasurementsExporter
implements
MeasurementsExporter
{
private
final
JsonFactory
factory
=
new
JsonFactory
();
private
JsonGenerator
g
;
public
JSONMeasurementsExporter
(
OutputStream
os
)
throws
IOException
{
BufferedWriter
bw
=
new
BufferedWriter
(
new
OutputStreamWriter
(
os
));
g
=
factory
.
createJsonGenerator
(
bw
);
g
.
setPrettyPrinter
(
new
DefaultPrettyPrinter
());
}
public
void
write
(
String
metric
,
String
measurement
,
int
i
)
throws
IOException
{
g
.
writeStartObject
();
g
.
writeStringField
(
"metric"
,
metric
);
g
.
writeStringField
(
"measurement"
,
measurement
);
g
.
writeNumberField
(
"value"
,
i
);
g
.
writeEndObject
();
}
public
void
write
(
String
metric
,
String
measurement
,
long
i
)
throws
IOException
{
g
.
writeStartObject
();
g
.
writeStringField
(
"metric"
,
metric
);
g
.
writeStringField
(
"measurement"
,
measurement
);
g
.
writeNumberField
(
"value"
,
i
);
g
.
writeEndObject
();
}
public
void
write
(
String
metric
,
String
measurement
,
double
d
)
throws
IOException
{
g
.
writeStartObject
();
g
.
writeStringField
(
"metric"
,
metric
);
g
.
writeStringField
(
"measurement"
,
measurement
);
g
.
writeNumberField
(
"value"
,
d
);
g
.
writeEndObject
();
}
public
void
close
()
throws
IOException
{
if
(
g
!=
null
)
{
g
.
close
();
}
}
}
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