Add MeterRegistry monitoring

- update and cleanup in README.md
- extract webclient call from registerDevice and add metrics in DeviceRegistryService
- add WebClientCalls.kt
- update kotlin logging dependency
- add MeterRegistry dependency

README.md

@@ -5,16 +5,23 @@ Classes and endpoints, to shape and to steer, Devices and sensors, their purpose
 ## Properties for deployment
 
 | name                                         | required | info                                         |
-|-------------------------------|----------|-------------------------|
-| spring.profiles.active        | *        | Spring Boot environment |
-| server.port                   | *        | HTTP port               |
-| server.ssl.enabled            | *        | HTTP Enable SSL         |
-| server.ssl.key-store          | *        | HTTP Keystore           |
-| server.ssl.key-store-type     | *        | HTTP Cert Type          |
-| server.ssl.key-store-password | **       | HTTP Cert Pass          |
-| device-registry.url           | *        | Device Register URL     |
+|----------------------------------------------|:--------:|----------------------------------------------|
+| spring.profiles.active                       | ✓  | Spring Boot environment                      |
+| server.port                                  | ✓  | HTTP port                                    |
+| server.ssl.enabled                           | ✓  | HTTP Enable SSL                              |
+| server.ssl.key-store                         | ✓  | HTTP Keystore                                |
+| server.ssl.key-store-type                    | ✓  | HTTP Cert Type                               |
+| server.ssl.key-store-password                | ✗  | HTTP Cert Pass                               |
+| device-registry.url                          | ✓  | Device Register URL                          |
+| management.influx.metrics.export.api-version |          | InfluxDB API version                         |
+| management.influx.metrics.export.enabled     |          | Enable/Disable exporting metrics to InfluxDB |
+| management.influx.metrics.export.bucket      | ✓  | InfluxDB bucket name                         |
+| management.influx.metrics.export.org         | ✓  | InfluxDB organization                        |
+| management.influx.metrics.export.token       | ✗  | InfluxDB token                               |
+| management.influx.metrics.export.uri         | ✓  | InfluxDB URL                                 |
+| management.metrics.tags.application          | ✓  | Application instance tag for metrics         |
 
-Required: * can be stored as text, and ** need to be stored as secret.
+*Required: ✓ can be stored as text, and ✗ need to be stored as secret.*
 
 ## Releasing Service
 
@@ -22,39 +29,29 @@ Run `release.sh` script from `master` branch.
 
 ## Development Configuration
 
+
 ### Developer Keystore
 
-1. Open `hosts` file:
-    * On Unix-like systems (Linux, macOS), this directory is typically `/etc/hosts`.
-    * On Windows, this directory is typically `%SystemRoot%\System32\drivers\etc\hosts`.
+We use a keystore to enable HTTPS for our API. To set up your developer environment for local development, please refer to [generate keystore](https://github.com/swordsteel/hlaeja-development/blob/master/doc/keystore.md) documentation. When generating and exporting the certificate for local development, please store it in the `./cert/keystore.p12` folder at the project root.
 
-2. Add the following lines to the `hosts` file:
-    ```text
-    127.0.0.1	registryapi		# Hlæja Registry API
-    ```
+### Global Settings
 
-3. Generate Keystores
-    ```shell
-    keytool -genkeypair -alias registry-api -keyalg RSA -keysize 2048 -validity 3650 -dname "CN=registryapi" -keypass password -keystore ./cert/keystore.p12 -storetype PKCS12 -storepass password
-    ```
+This services rely on a set of global settings to configure development environments. These settings, managed through Gradle properties or environment variables.
 
-4. Export the public certificate
-    ```shell
-    keytool -export -alias registry-api -keystore ./cert/keystore.p12 -storepass password -file ./cert/registry-api.cer -rfc
-    ```
+*Note: For more information on global properties, please refer to our [global settings](https://github.com/swordsteel/hlaeja-development/blob/master/doc/global_settings.md) documentation.*
 
-### Global gradle properties
+#### Gradle Properties
 
-To authenticate with Gradle to access repositories that require authentication, you can set your user and token in the `gradle.properties` file.
-
-Here's how you can do it:
-
-1. Open or create the `gradle.properties` file in your Gradle user home directory:
-   - On Unix-like systems (Linux, macOS), this directory is typically `~/.gradle/`.
-   - On Windows, this directory is typically `C:\Users\<YourUsername>\.gradle\`.
-2. Add the following lines to the `gradle.properties` file:
 ```properties
 repository.user=your_user
 repository.token=your_token_value
+influxdb.token=your_token_value
+```
+
+#### Environment Variables
+
+```properties
+REPOSITORY_USER=your_user
+REPOSITORY_TOKEN=your_token_value
+INFLUXDB_TOKEN=your_token_value
 ```
-   or use environment variables `REPOSITORY_USER` and `REPOSITORY_TOKEN`

build.gradle.kts

@@ -1,3 +1,5 @@
+import com.bmuschko.gradle.docker.tasks.container.DockerCreateContainer
+
 plugins {
     alias(hlaeja.plugins.kotlin.jvm)
     alias(hlaeja.plugins.kotlin.spring)
@@ -13,6 +15,7 @@ dependencies {
     implementation(hlaeja.kotlin.reflect)
     implementation(hlaeja.kotlinx.coroutines)
     implementation(hlaeja.library.hlaeja.common.messages)
+    implementation(hlaeja.micrometer.registry.influx)
     implementation(hlaeja.springboot.starter.actuator)
     implementation(hlaeja.springboot.starter.webflux)
 
@@ -27,6 +30,17 @@ dependencies {
 
 group = "ltd.hlaeja"
 
-tasks.named("processResources") {
+fun influxDbToken(): String = config.findOrDefault("influxdb.token", "INFLUXDB_TOKEN", "")
+
+tasks {
+    named("containerCreate", DockerCreateContainer::class) {
+        withEnvVar("MANAGEMENT_INFLUX_METRICS_EXPORT_TOKEN", influxDbToken())
+    }
+    withType<ProcessResources> {
+        filesMatching("**/application.yml") { filter { it.replace("%INFLUXDB_TOKEN%", influxDbToken()) } }
+        onlyIf { file("src/main/resources/application.yml").exists() }
+    }
+    named("processResources") {
         dependsOn("copyCertificates")
     }
+}

gradle.properties

@@ -1,6 +1,6 @@
 kotlin.code.style=official
 version=0.1.0-SNAPSHOT
-catalog=0.6.0
+catalog=0.7.0-SNAPSHOT
 docker.port.expose=8443
 container.port.expose=8443
 container.port.host=9040

src/main/kotlin/ltd/hlaeja/service/DeviceRegistryService.kt

@@ -1,24 +1,46 @@
 package ltd.hlaeja.service
 
+import io.github.oshai.kotlinlogging.KotlinLogging
+import io.micrometer.core.instrument.Counter
+import io.micrometer.core.instrument.MeterRegistry
 import ltd.hlaeja.library.deviceRegistry.Device
-import ltd.hlaeja.util.logCall
 import ltd.hlaeja.property.DeviceRegistryProperty
-import org.springframework.http.HttpStatus.REQUEST_TIMEOUT
+import ltd.hlaeja.util.deviceRegistryCreateDevice
+import org.springframework.http.HttpStatus.SERVICE_UNAVAILABLE
 import org.springframework.stereotype.Service
+import org.springframework.web.ErrorResponseException
 import org.springframework.web.reactive.function.client.WebClient
-import org.springframework.web.reactive.function.client.awaitBodyOrNull
+import org.springframework.web.reactive.function.client.WebClientRequestException
 import org.springframework.web.server.ResponseStatusException
 
+private val log = KotlinLogging.logger {}
+
 @Service
 class DeviceRegistryService(
+    meterRegistry: MeterRegistry,
     private val webClient: WebClient,
     private val deviceRegistryProperty: DeviceRegistryProperty,
 ) {
+
+    private val registerDeviceSuccess = Counter.builder("device.registry.success")
+        .description("Number of successful device registrations")
+        .register(meterRegistry)
+
+    private val registerDeviceFailure = Counter.builder("device.registry.failure")
+        .description("Number of failed device registrations")
+        .register(meterRegistry)
+
     suspend fun registerDevice(
         request: Device.Request,
-    ): Device.Response = webClient.post()
-        .uri("${deviceRegistryProperty.url}/device".also(::logCall))
-        .bodyValue(request)
-        .retrieve()
-        .awaitBodyOrNull<Device.Response>() ?: throw ResponseStatusException(REQUEST_TIMEOUT)
+    ): Device.Response = try {
+        webClient.deviceRegistryCreateDevice(request, deviceRegistryProperty)
+            .also { registerDeviceSuccess.increment() }
+    } catch (e: ErrorResponseException) {
+        registerDeviceFailure.increment()
+        throw e
+    } catch (e: WebClientRequestException) {
+        registerDeviceFailure.increment()
+        log.error(e) { "Error device registry" }
+        throw ResponseStatusException(SERVICE_UNAVAILABLE)
+    }
 }

src/main/kotlin/ltd/hlaeja/util/Helper.kt

@@ -1,9 +1,7 @@
 package ltd.hlaeja.util
 
-import mu.KotlinLogging
+import io.github.oshai.kotlinlogging.KotlinLogging
 
 private val log = KotlinLogging.logger {}
 
-fun logCall(url: String) {
-    log.debug("calling: {}", url)
-}
+fun logCall(url: String) = log.debug { "calling: $url" }

src/main/kotlin/ltd/hlaeja/util/WebClientCalls.kt

@@ -0,0 +1,17 @@
+package ltd.hlaeja.util
+
+import ltd.hlaeja.library.deviceRegistry.Device
+import ltd.hlaeja.property.DeviceRegistryProperty
+import org.springframework.http.HttpStatus.REQUEST_TIMEOUT
+import org.springframework.web.reactive.function.client.WebClient
+import org.springframework.web.reactive.function.client.awaitBodyOrNull
+import org.springframework.web.server.ResponseStatusException
+
+suspend fun WebClient.deviceRegistryCreateDevice(
+    request: Device.Request,
+    property: DeviceRegistryProperty,
+): Device.Response = post()
+    .uri("${property.url}/device".also(::logCall))
+    .bodyValue(request)
+    .retrieve()
+    .awaitBodyOrNull<Device.Response>() ?: throw ResponseStatusException(REQUEST_TIMEOUT)

src/main/resources/application.yml

@@ -10,6 +10,25 @@ spring:
         name: "%APP_BUILD_OS_NAME%"
         version: "%APP_BUILD_OS_VERSION%"
 
+management:
+  endpoints:
+    enabled-by-default: false
+    web:
+      exposure:
+        include: "health,info"
+  endpoint:
+    health:
+      enabled: true
+      show-details: always
+    info:
+      enabled: true
+  influx:
+    metrics:
+      export:
+        api-version: v2
+        bucket: hlaeja
+        org: hlaeja_ltd
+
 ---
 ###############################
 ### Development environment ###
@@ -30,6 +49,16 @@ server:
 device-registry:
   url: http://localhost:9010
 
+management:
+  metrics:
+    tags:
+      application: register-api
+  influx:
+    metrics:
+      export:
+        enabled: false
+        token: %INFLUXDB_TOKEN%
+
 ---
 ##########################
 ### Docker environment ###
@@ -39,6 +68,15 @@ spring:
     activate:
       on-profile: docker
 
+management:
+  metrics:
+    tags:
+      application: register-api
+  influx:
+    metrics:
+      export:
+        uri: http://InfluxDB:8086
+
 server:
   port: 8443
   ssl: