forked from openjdk/skara
/
BotLogstashHandler.java
121 lines (106 loc) · 4.29 KB
/
BotLogstashHandler.java
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/*
* Copyright (c) 2018, 2019, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package org.openjdk.skara.bots.cli;
import org.openjdk.skara.bot.LogContextMap;
import org.openjdk.skara.network.RestRequest;
import org.openjdk.skara.json.JSON;
import java.io.*;
import java.net.URI;
import java.time.*;
import java.time.format.DateTimeFormatter;
import java.util.*;
import java.util.logging.*;
import java.util.regex.Pattern;
public class BotLogstashHandler extends StreamHandler {
private final RestRequest endpoint;
private final DateTimeFormatter dateTimeFormatter;
private final Logger log = Logger.getLogger("org.openjdk.skara.bots.cli");
private static class ExtraField {
String name;
String value;
Pattern pattern;
}
private final List<ExtraField> extraFields;
BotLogstashHandler(URI endpoint) {
this.endpoint = new RestRequest(endpoint);
dateTimeFormatter = DateTimeFormatter.ISO_INSTANT
.withLocale(Locale.getDefault())
.withZone(ZoneId.systemDefault());
extraFields = new ArrayList<>();
}
void addExtraField(String name, String value) {
addExtraField(name, value, null);
}
void addExtraField(String name, String value, String pattern) {
var extraField = new ExtraField();
extraField.name = name;
extraField.value = value;
if (pattern != null) {
extraField.pattern = Pattern.compile(pattern);
}
extraFields.add(extraField);
}
private void publishToLogstash(Instant time, Level level, String message, Map<String, String> extraFields) {
try {
var query = JSON.object();
query.put("@timestamp", dateTimeFormatter.format(time));
query.put("level", level.getName());
query.put("level_value", level.intValue());
query.put("message", message);
for (Map.Entry<String, String> entry : LogContextMap.entrySet()) {
query.put(entry.getKey(), entry.getValue());
}
for (var extraField : extraFields.entrySet()) {
query.put(extraField.getKey(), extraField.getValue());
}
endpoint.post("/")
.body(query)
.executeUnparsed();
} catch (RuntimeException | IOException e) {
log.warning("Exception during logstash publishing: " + e.getMessage());
log.throwing("BotSlackHandler", "publish", e);
}
}
private Map<String, String> getExtraFields(LogRecord record) {
var ret = new HashMap<String, String>();
for (var extraField : extraFields) {
if (extraField.pattern != null) {
var matcher = extraField.pattern.matcher(record.getMessage());
if (matcher.matches()) {
var value = matcher.replaceFirst(extraField.value);
ret.put(extraField.name, value);
}
} else {
ret.put(extraField.name, extraField.value);
}
}
return ret;
}
@Override
public void publish(LogRecord record) {
if (record.getLevel().intValue() < getLevel().intValue()) {
return;
}
publishToLogstash(record.getInstant(), record.getLevel(), record.getMessage(), getExtraFields(record));
}
}