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https://github.com/mjfryc/mjaron-tinyloki-java
Tiny Grafana Loki client (log sender) written in pure Java 1.8 without any dependencies.
https://github.com/mjfryc/mjaron-tinyloki-java
android android-library grafana grafana-loki java java-8 java-android java-se java8 library logger logging logs loki
Last synced: 4 months ago
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Tiny Grafana Loki client (log sender) written in pure Java 1.8 without any dependencies.
- Host: GitHub
- URL: https://github.com/mjfryc/mjaron-tinyloki-java
- Owner: mjfryc
- License: mit
- Created: 2021-10-31T12:40:51.000Z (over 3 years ago)
- Default Branch: main
- Last Pushed: 2024-09-10T15:11:34.000Z (5 months ago)
- Last Synced: 2024-09-27T15:41:02.848Z (4 months ago)
- Topics: android, android-library, grafana, grafana-loki, java, java-8, java-android, java-se, java8, library, logger, logging, logs, loki
- Language: Java
- Homepage:
- Size: 235 KB
- Stars: 11
- Watchers: 2
- Forks: 6
- Open Issues: 4
-
Metadata Files:
- Readme: README.md
- License: LICENSE
- Security: SECURITY.md
Awesome Lists containing this project
README
# mjaron-tinyloki-java
[](https://github.com/mjfryc/mjaron-tinyloki-java/actions/workflows/gradle.yml)
[](https://github.com/mjfryc/mjaron-tinyloki-java/actions/workflows/gradle-publish.yml)
[](https://github.com/mjfryc/mjaron-tinyloki-java/actions/workflows/codeql.yml)
[](https://search.maven.org/artifact/io.github.mjfryc/mjaron-tinyloki-java/)
[](https://lgtm.com/projects/g/mjfryc/mjaron-tinyloki-java/alerts/)
Tiny [Grafana Loki](https://grafana.com/oss/loki/) client (log sender) written in pure Java 1.8 without any external dependencies.
* Implements JSON variant of [Loki API](https://grafana.com/docs/loki/latest/api/#post-lokiapiv1push)
* Works with **Android** and **Java SE**
* Thread safe
## API description
HTTP sender requires http URL, optionally basic authentication credentials may be set.
Short example:
```java
import pl.mjaron.tinyloki.*;
public class Sample {
public static void main(String[] args) {
LogController logController = TinyLoki
.withUrl("http://localhost/loki/api/v1/push")
.withBasicAuth("user", "pass")
.start();
ILogStream stream = logController.stream() // Before v0.3.2 use createStream()
.info()
.l("host", "MyComputerName")
.l("customLabel", "custom_value")
.build();
stream.log("Hello world.");
logController.softStop().hardStop();
}
}
```
Verbose example:
```java
import pl.mjaron.tinyloki.*;
public class Sample {
public static void main(String[] args) {
// Initialize log controller instance with URL.
// Usually creating more than one LogController instance doesn't make sense.
// LogController owns separate thread which sends logs periodically.
LogController logController = TinyLoki
.withUrl("http://localhost/loki/api/v1/push")
.withBasicAuth("user", "pass")
.start();
// Create streams. It is thread-safe.
ILogStream stream = logController.createStream(
// Define stream labels...
// Initializing log level to verbose and adding some custom labels.
TinyLoki.verbose()
.l("host", "MyComputerName") // Custom static label.
.l("customLabel", "custom_value") // Custom static label.
// Label names should start with letter
// and contain letters, digits and '_' only.
// Bad characters will be replaced by '_'.
// If first character is bad, it will be replaced by 'A'.
);
// ... new streams and other logs here (thread-safe, non-blocking).
stream.log("Hello world.");
// Optionally flush logs before application exit.
logController
.softStop() // Try to send logs last time. Blocking method.
.hardStop(); // If it doesn't work (soft timeout) - force stop sending thread.
}
}
```
## Integration
### Maven Central
```gradle
implementation 'io.github.mjfryc:mjaron-tinyloki-java:0.3.11'
```
_[Maven Central page](https://search.maven.org/artifact/io.github.mjfryc/mjaron-tinyloki-java/),_
_[Maven Central repository URL](https://repo1.maven.org/maven2/io/github/mjfryc/mjaron-tinyloki-java/)_
### GitHub Packages
Click the [Packages section](https://github.com/mjfryc?tab=packages&repo_name=mjaron-tinyloki-java) on the right.
### Download directly
1. Click the [Packages section](https://github.com/mjfryc?tab=packages&repo_name=mjaron-tinyloki-java) on the right.
2. Find and download jar package from files list to e.g. `your_project_root/libs` dir.
3. Add this jar to project dependencies in build.gradle, e.g:
```gradle
implementation files(project.rootDir.absolutePath + '/libs/mjaron-tinyloki-java-0.3.11.jar')
```
## API design
```mermaid
classDiagram
class Labels {
l(name, value) // Add the label
}
class ILogStream {
<>
log(content)
log(timestamp, content)
release()
}
class ILogCollector {
<>
createStream(labels)
collect()
contentType()
waitForLogs(timeout)
}
class ILogEncoder {
<>
contentEncoding(): String
encode(final byte[] what): byte[]
}
class ILogMonitor {
<>
onConfigured(contentType, contentEncoding)
onEncoded(in, out)
send(message)
sendOk(status)
sendErr(status, message)
onException(exception)
onWorkerThreadExit(isSoft)
}
class ILogSender {
<>
configure(logSenderSettings, logMonitor)
send(bytes)
}
class LogController {
workerThread: Thread
stream(): StreamBuilder
createStream(labels)
start()
softStop()
hardStop()
}
class GzipLogEncoder
class VerboseLogMonitor
class ErrorLogMonitor
class JsonLogStream
class JsonLogCollector
class Settings {
+start(): LogController
}
class TinyLoki {
+withUrl(url)$
}
VerboseLogMonitor --|> ILogMonitor: implements
ErrorLogMonitor --|> ILogMonitor: implements
ILogStream <.. ILogCollector: create
ILogCollector --* LogController
Labels <.. ILogCollector : use
ILogSender --* LogController
GzipLogEncoder --|> ILogEncoder: implements
ILogEncoder --* LogController
ILogMonitor --* LogController
JsonLogStream --|> ILogStream: implements
JsonLogCollector --|> ILogCollector: implements
JsonLogStream <.. JsonLogCollector: create
HttpLogSender --|> ILogSender: implements
DummyLogSender --|> ILogSender: implements
Settings <.. TinyLoki: create
LogController <.. Settings: create
```