1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
|
= Quarkus Google Cloud JSON Logging
Matthias Andreas Benkard
// Meta
:experimental:
:data-uri:
:sectnums:
:toc:
:stem:
:toclevels: 2
:description: Quarkus Google Cloud JSON Logging Manual
:keywords: mulk
// Settings
:icons: font
:source-highlighter: rouge
Structured logging to standard output according to the Google Cloud
Logging specification.
== Summary
This package contains a log formatter for JBoss Logging in the form of
a Quarkus plugin that implements the
https://cloud.google.com/logging/docs/structured-logging[Google Cloud
Logging JSON format] on standard output.
It is possible to log unstructured text, structured data, or a mixture
of both depending on the situation.
== Activation
Add the runtime POM to your dependency list. As long as the JAR is on
the classpath at both build time and runtime, the log formatter
automatically registers itself on startup.
=== Activation with Maven
[source,xml]
----
<project>
...
<dependencies>
...
<dependency>
<groupId>eu.mulk.quarkus-googlecloud-jsonlogging</groupId>
<artifactId>quarkus-googlecloud-jsonlogging</artifactId>
<version>4.0.0</version>
</dependency>
...
</dependencies>
...
</project>
----
=== Activation with Gradle
[source,groovy]
----
dependencies {
...
implementation("eu.mulk.quarkus-googlecloud-jsonlogging:quarkus-googlecloud-jsonlogging:4.0.0")
...
}
----
== Usage
Logging unstructured data requires no code changes. All logs are
automatically converted to Google-Cloud-Logging-compatible JSON.
Structured data can be logged in one of 3 different ways: by passing
https://javadocs.dev/eu.mulk.quarkus-googlecloud-jsonlogging/quarkus-googlecloud-jsonlogging/3.1.0/eu.mulk.quarkus.googlecloud.jsonlogging/eu/mulk/quarkus/googlecloud/jsonlogging/Label.html[Label]s
and
https://javadocs.dev/eu.mulk.quarkus-googlecloud-jsonlogging/quarkus-googlecloud-jsonlogging/3.1.0/eu.mulk.quarkus.googlecloud.jsonlogging/eu/mulk/quarkus/googlecloud/jsonlogging/StructuredParameter.html[StructuredParameter]s
as parameters to individual log entries, by supplying
https://javadocs.dev/eu.mulk.quarkus-googlecloud-jsonlogging/quarkus-googlecloud-jsonlogging/3.1.0/eu.mulk.quarkus.googlecloud.jsonlogging/eu/mulk/quarkus/googlecloud/jsonlogging/LabelProvider.html[LabelProvider]s
and
https://javadocs.dev/eu.mulk.quarkus-googlecloud-jsonlogging/quarkus-googlecloud-jsonlogging/3.1.0/eu.mulk.quarkus.googlecloud.jsonlogging/eu/mulk/quarkus/googlecloud/jsonlogging/StructuredParameterProvider.html[StructuredParameterProvider]s,
or by using the Mapped Diagnostic Context.
=== Using Label and StructuredParameter
Instances of
https://javadocs.dev/eu.mulk.quarkus-googlecloud-jsonlogging/quarkus-googlecloud-jsonlogging/3.1.0/eu.mulk.quarkus.googlecloud.jsonlogging/eu/mulk/quarkus/googlecloud/jsonlogging/Label.html[Label]
and
https://javadocs.dev/eu.mulk.quarkus-googlecloud-jsonlogging/quarkus-googlecloud-jsonlogging/3.1.0/eu.mulk.quarkus.googlecloud.jsonlogging/eu/mulk/quarkus/googlecloud/jsonlogging/StructuredParameter.html[StructuredParameter]
can be passed as log parameters to the `*f` family of logging
functions on JBoss Logging's
https://docs.jboss.org/jbosslogging/latest/org/jboss/logging/Logger.html[Logger].
Simple key–value pairs are represented by
https://javadocs.dev/eu.mulk.quarkus-googlecloud-jsonlogging/quarkus-googlecloud-jsonlogging/3.1.0/eu.mulk.quarkus.googlecloud.jsonlogging/eu/mulk/quarkus/googlecloud/jsonlogging/KeyValueParameter.html[KeyValueParameter].
**Example:**
[source,java]
----
logger.logf(
"Request rejected: unauthorized.",
Label.of("requestId", "123"),
KeyValueParameter.of("resource", "/users/mulk"),
KeyValueParameter.of("method", "PATCH"),
KeyValueParameter.of("reason", "invalid token"));
----
Result:
[source,json]
----
{
"jsonPayload": {
"message": "Request rejected: unauthorized.",
"resource": "/users/mulk",
"method": "PATCH",
"reason": "invalid token"
},
"labels": {
"requestId": "123"
}
}
----
=== Using LabelProvider and StructuredParameterProvider
Any CDI beans that implement
https://javadocs.dev/eu.mulk.quarkus-googlecloud-jsonlogging/quarkus-googlecloud-jsonlogging/3.1.0/eu.mulk.quarkus.googlecloud.jsonlogging/eu/mulk/quarkus/googlecloud/jsonlogging/LabelProvider.html[LabelProvider]
and
https://javadocs.dev/eu.mulk.quarkus-googlecloud-jsonlogging/quarkus-googlecloud-jsonlogging/3.1.0/eu.mulk.quarkus.googlecloud.jsonlogging/eu/mulk/quarkus/googlecloud/jsonlogging/StructuredParameterProvider.html[StructuredParameterProvider]
are discovered at build time and consulted to provide labels and
parameters for each message that is logged. This can be used to
provide contextual information such as tracing and request IDs stored
in thread-local storage.
**Example:**
[source,java]
----
@Singleton
@Unremovable
public final class TraceLogParameterProvider implements StructuredParameterProvider, LabelProvider {
@Override
public StructuredParameter getParameter() {
var b = Json.createObjectBuilder();
b.add("traceId", Span.current().getSpanContext().getTraceId());
b.add("spanId", Span.current().getSpanContext().getSpanId());
return () -> b;
}
@Override
public Collection<Label> getLabels() {
return List.of(Label.of("requestId", "123"));
}
}
----
Result:
[source,json]
----
{
"jsonPayload": {
"message": "Request rejected: unauthorized.",
"traceId": "39f9a49a9567a8bd7087b708f8932550",
"spanId": "c7431b14630b633d"
},
"labels": {
"requestId": "123"
}
}
----
=== Using the Mapped Diagnostic Context
Any key–value pairs in JBoss Logging's thread-local
https://docs.jboss.org/jbosslogging/latest/org/jboss/logging/MDC.html[MDC]
are added to the resulting JSON.
**Example:**
[source,java]
----
MDC.put("resource", "/users/mulk");
MDC.put("method", "PATCH");
logger.logf("Request rejected: unauthorized.");
----
Result:
[source,json]
----
{
"jsonPayload": {
"message": "Request rejected: unauthorized.",
"resource": "/users/mulk",
"method": "PATCH"
}
}
----
|
