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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,7 +1,16 @@ | ||
| FROM node:boron-alpine | ||
| FROM openjdk:8-jre-alpine | ||
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| ADD src/*.js* ./ | ||
| ARG GIT_REPOSITORY= | ||
| ARG GIT_BRANCH_NAME= | ||
| ARG GIT_COMMIT_ID= | ||
| ARG ARTIFACT_VERSION=1.0-SNAPSHOT | ||
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| RUN npm install | ||
| ADD dashboards-controller/target/dashboards-controller-$ARTIFACT_VERSION.jar ./app.jar | ||
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| ENTRYPOINT [ "node", "index.js" ] | ||
| ENTRYPOINT [ "java", "-jar", "app.jar" ] | ||
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| LABEL GIT_REPOSITORY=$GIT_REPOSITORY \ | ||
| GIT_BRANCH_NAME=$GIT_BRANCH_NAME \ | ||
| GIT_COMMIT_ID=$GIT_COMMIT_ID \ | ||
| ARTIFACT_VERSION=$ARTIFACT_VERSION | ||
|
|
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,96 @@ | ||
| <?xml version="1.0" encoding="UTF-8"?> | ||
| <project xmlns="http://maven.apache.org/POM/4.0.0" | ||
| xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" | ||
| xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> | ||
| <parent> | ||
| <artifactId>grafana-dashboards-controller</artifactId> | ||
| <groupId>com.mbenabda.kubernetes</groupId> | ||
| <version>1.0-SNAPSHOT</version> | ||
| </parent> | ||
| <modelVersion>4.0.0</modelVersion> | ||
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| <groupId>com.mbenabda.kubernetes.controllers.grafana.dashboards</groupId> | ||
| <artifactId>dashboards-controller</artifactId> | ||
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| <properties> | ||
| <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> | ||
| <maven.compiler.source>1.8</maven.compiler.source> | ||
| <maven.compiler.target>1.8</maven.compiler.target> | ||
| </properties> | ||
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| <dependencies> | ||
| <dependency> | ||
| <groupId>io.fabric8</groupId> | ||
| <artifactId>kubernetes-client</artifactId> | ||
| <version>3.0.3</version> | ||
| </dependency> | ||
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| <dependency> | ||
| <groupId>com.mbenabda.grafana</groupId> | ||
| <artifactId>api-client</artifactId> | ||
| <version>1.0-SNAPSHOT</version> | ||
| </dependency> | ||
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| <dependency> | ||
| <groupId>com.beust</groupId> | ||
| <artifactId>jcommander</artifactId> | ||
| <version>1.72</version> | ||
| </dependency> | ||
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| <dependency> | ||
| <groupId>com.google.guava</groupId> | ||
| <artifactId>guava</artifactId> | ||
| <version>19.0</version> | ||
| </dependency> | ||
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| <dependency> | ||
| <groupId>org.projectlombok</groupId> | ||
| <artifactId>lombok</artifactId> | ||
| <version>1.16.16</version> | ||
| <scope>provided</scope> | ||
| </dependency> | ||
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| <dependency> | ||
| <groupId>junit</groupId> | ||
| <artifactId>junit</artifactId> | ||
| <version>4.12</version> | ||
| <scope>test</scope> | ||
| </dependency> | ||
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| <dependency> | ||
| <groupId>org.mockito</groupId> | ||
| <artifactId>mockito-core</artifactId> | ||
| <version>2.13.0</version> | ||
| </dependency> | ||
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| </dependencies> | ||
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| <build> | ||
| <plugins> | ||
| <plugin> | ||
| <groupId>org.apache.maven.plugins</groupId> | ||
| <artifactId>maven-shade-plugin</artifactId> | ||
| <version>2.3</version> | ||
| <executions> | ||
| <execution> | ||
| <phase>package</phase> | ||
| <goals> | ||
| <goal>shade</goal> | ||
| </goals> | ||
| <configuration> | ||
| <createDependencyReducedPom>false</createDependencyReducedPom> | ||
| <transformers> | ||
| <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer"> | ||
| <manifestEntries> | ||
| <Main-Class>com.mbenabda.kubernetes.controllers.grafana.dashboards.Main</Main-Class> | ||
| </manifestEntries> | ||
| </transformer> | ||
| </transformers> | ||
| </configuration> | ||
| </execution> | ||
| </executions> | ||
| </plugin> | ||
| </plugins> | ||
| </build> | ||
| </project> |
107 changes: 107 additions & 0 deletions
107
...c/main/java/com/mbenabda/kubernetes/controllers/grafana/dashboards/ConfigMapsWatcher.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,107 @@ | ||
| package com.mbenabda.kubernetes.controllers.grafana.dashboards; | ||
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| import com.fasterxml.jackson.annotation.JsonAutoDetect; | ||
| import com.fasterxml.jackson.annotation.JsonInclude; | ||
| import com.fasterxml.jackson.annotation.PropertyAccessor; | ||
| import com.fasterxml.jackson.databind.DeserializationFeature; | ||
| import com.fasterxml.jackson.databind.JsonNode; | ||
| import com.fasterxml.jackson.databind.ObjectMapper; | ||
| import com.google.common.base.Joiner; | ||
| import com.mbenabda.grafana.client.GrafanaClient; | ||
| import com.mbenabda.grafana.client.exceptions.GrafanaException; | ||
| import io.fabric8.kubernetes.api.model.ConfigMap; | ||
| import io.fabric8.kubernetes.api.model.ObjectMeta; | ||
| import io.fabric8.kubernetes.client.KubernetesClientException; | ||
| import io.fabric8.kubernetes.client.Watcher; | ||
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| import java.io.IOException; | ||
| import java.util.Map; | ||
| import java.util.logging.Level; | ||
| import java.util.logging.Logger; | ||
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| import static java.lang.String.format; | ||
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| class ConfigMapsWatcher implements Watcher<ConfigMap> { | ||
| private static final Joiner KEY_PARTS_JOINER = Joiner.on("/"); | ||
| private final GrafanaClient grafana; | ||
| private final ObjectMapper mapper; | ||
| private static final Logger LOGGER = Logger.getLogger(ConfigMapsWatcher.class.getSimpleName()); | ||
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| public ConfigMapsWatcher(GrafanaClient grafana) { | ||
| this.grafana = grafana; | ||
| this.mapper = | ||
| new ObjectMapper() | ||
| .disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES) | ||
| .setSerializationInclusion(JsonInclude.Include.NON_NULL) | ||
| .setVisibility(PropertyAccessor.FIELD, JsonAutoDetect.Visibility.ANY); | ||
| } | ||
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| @Override | ||
| public void eventReceived(Action action, ConfigMap configMap) { | ||
| try { | ||
| switch (action) { | ||
| case ADDED: { | ||
| JsonNode dashboard = asDashboard(configMap); | ||
| grafana.importDashboard(dashboard); | ||
| LOGGER.info(format("ConfigMap %s was created. Dashboard %s has been added to Grafana", key(configMap), title(dashboard))); | ||
| } | ||
| break; | ||
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| case MODIFIED: { | ||
| JsonNode dashboard = asDashboard(configMap); | ||
| String title = title(dashboard); | ||
| String slug = grafana.slug(title); | ||
| grafana.deleteDashboard(slug); | ||
| grafana.importDashboard(dashboard); | ||
| LOGGER.info(format("ConfigMap %s was modified. Dashboard %s updated accordingly", key(configMap), title)); | ||
| } | ||
| break; | ||
|
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| case DELETED: { | ||
| JsonNode dashboard = asDashboard(configMap); | ||
| String title = title(dashboard); | ||
| String slug = grafana.slug(title); | ||
| grafana.deleteDashboard(slug); | ||
| LOGGER.info(format("ConfigMap %s was deleted. Dashboard %s removed from Grafana", key(configMap), title)); | ||
| } | ||
| break; | ||
| } | ||
| } catch (GrafanaException | IOException e) { | ||
| LOGGER.warning( | ||
| format("Unable to handle %s event on ConfigMap %s because %s", action, key(configMap), e.getMessage()) | ||
| ); | ||
| } | ||
| } | ||
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| private String key(ConfigMap configMap) { | ||
| ObjectMeta metadata = configMap.getMetadata(); | ||
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| return KEY_PARTS_JOINER.join( | ||
| metadata.getNamespace(), | ||
| metadata.getName() | ||
| ); | ||
| } | ||
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| @Override | ||
| public void onClose(KubernetesClientException e) { | ||
| if (e != null) { | ||
| LOGGER.log(Level.WARNING, e.getMessage(), e); | ||
| } | ||
| } | ||
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| private JsonNode asDashboard(ConfigMap configMap) throws IOException { | ||
| return mapper.readTree(dashboardJson(configMap)); | ||
| } | ||
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| private String dashboardJson(ConfigMap configMap) { | ||
| return valueOfFirstKey(configMap.getData()); | ||
| } | ||
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| private static <K, V> V valueOfFirstKey(Map<K, V> data) { | ||
| return data.entrySet().iterator().next().getValue(); | ||
| } | ||
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| private static String title(JsonNode dashboard) { | ||
| return dashboard.get("dashboard").get("title").asText(); | ||
| } | ||
| } |
31 changes: 31 additions & 0 deletions
31
...ller/src/main/java/com/mbenabda/kubernetes/controllers/grafana/dashboards/Controller.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,31 @@ | ||
| package com.mbenabda.kubernetes.controllers.grafana.dashboards; | ||
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| import com.mbenabda.grafana.client.GrafanaClient; | ||
| import com.mbenabda.kubernetes.controllers.grafana.dashboards.configuration.DashboardsWatchOptions; | ||
| import io.fabric8.kubernetes.client.KubernetesClient; | ||
|
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| import java.util.logging.Logger; | ||
|
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| public class Controller { | ||
| private static final Logger LOGGER = Logger.getLogger(Controller.class.getSimpleName()); | ||
|
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| private final DashboardsWatchOptions configMapsFiler; | ||
| private final GrafanaClient grafana; | ||
| private final KubernetesClient k8s; | ||
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| public Controller(KubernetesClient k8s, DashboardsWatchOptions configMapsFiler, GrafanaClient grafana) { | ||
| this.k8s = k8s; | ||
| this.configMapsFiler = configMapsFiler; | ||
| this.grafana = grafana; | ||
| } | ||
|
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| public void run() { | ||
| configMapsFiler | ||
| .with(k8s) | ||
| .watch( | ||
| new ConfigMapsWatcher( | ||
| grafana | ||
| ) | ||
| ); | ||
| } | ||
| } |
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