add Redis cache and some clean up

- update and cleanup in README.md
- update getIdentity to throw response exception with 401 in JwtService
- update http files to use identity from env
- add cacheable to getIdentityFromDevice in DeviceRegistryService
- add RedisCacheConfiguration
- add CacheProperty
- set up cache property
- set up data redis cache

README.md

@@ -5,26 +5,31 @@ 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                      |
+| spring.profiles.active                       | ✓  | Spring Boot environment                      |
-| server.port                                  | *        | HTTP port                                    |
+| server.port                                  | ✓  | HTTP port                                    |
-| server.ssl.enabled                           | *        | HTTP Enable SSL                              |
+| server.ssl.enabled                           | ✓  | HTTP Enable SSL                              |
-| server.ssl.key-store                         | *        | HTTP Keystore                                |
+| server.ssl.key-store                         | ✓  | HTTP Keystore                                |
-| server.ssl.key-store-type                    | *        | HTTP Cert Type                               |
+| server.ssl.key-store-type                    | ✓  | HTTP Cert Type                               |
-| server.ssl.key-store-password                | **       | HTTP Cert Pass                               |
+| server.ssl.key-store-password                | ✗  | HTTP Cert Pass                               |
-| jwt.public-key                               | *        | JWT public key                               |
+| spring.cache.type                            |          | Cache type (redis)                           |
-| device-registry.url                          | *        | Device Register URL                          |
+| spring.data.redis.host                       | ✓  | Redis host                                   |
-| device-data.url                              | *        | Device Data URL                              |
+| spring.data.redis.port                       |          | Redis port                                   |
-| device-configuration.url                     | *        | Device Configuration URL                     |
+| spring.data.redis.database                   | ✓  | Redis database                               |
+| cache.time-to-live                           |          | Cache time to live (minutes)                 |
+| jwt.public-key                               | ✓  | JWT public key                               |
+| device-registry.url                          | ✓  | Device Register URL                          |
+| device-data.url                              | ✓  | Device Data URL                              |
+| device-configuration.url                     | ✓  | Device Configuration 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.bucket      | ✓  | InfluxDB bucket name                         |
-| management.influx.metrics.export.org         | *        | InfluxDB organization                        |
+| management.influx.metrics.export.org         | ✓  | InfluxDB organization                        |
-| management.influx.metrics.export.token       | **       | InfluxDB token                               |
+| management.influx.metrics.export.token       | ✗  | InfluxDB token                               |
-| management.influx.metrics.export.uri         | *        | InfluxDB URL                                 |
+| management.influx.metrics.export.uri         | ✓  | InfluxDB URL                                 |
-| management.metrics.tags.application          | *        | Application instance tag for metrics         |
+| 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
 
@@ -34,43 +39,32 @@ Run `release.sh` script from `master` branch.
 
 ### Developer Keystore
 
-1. Open `hosts` file:
+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.
-    * On Unix-like systems (Linux, macOS), this directory is typically `/etc/hosts`.
-    * On Windows, this directory is typically `%SystemRoot%\System32\drivers\etc\hosts`.
-
-2. Add the following lines to the `hosts` file:
-    ```text
-    127.0.0.1	deviceapi		# Hlæja Device API
-    ```
-
-3. Generate Keystores
-    ```shell
-    keytool -genkeypair -alias device-api -keyalg RSA -keysize 2048 -validity 3650 -dname "CN=deviceapi" -keypass password -keystore ./cert/keystore.p12 -storetype PKCS12 -storepass password
-    ```
-
-4. Export the public certificate
-    ```shell
-    keytool -export -alias device-api -keystore ./cert/keystore.p12 -storepass password -file ./cert/device-api.cer -rfc
-    ```
 
 ### Public RSA Key
 
-To validate devices, copy file named `public_key.pem` from `./cert` generated for local development in **Hlæja Device Register** in to `./cert`.
+This service uses the public key from **[Hlæja Device Register](https://github.com/swordsteel/hlaeja-device-registry)** to identify devices. To set up device identification for local development, copy the `public_key.pem` file from the `./cert` directory in **Hlæja Device Register** into the `./cert` directory of this project.
 
-### Global gradle properties
+*Note: For more information on generating RSA keys, please refer to our [generate RSA key](https://github.com/swordsteel/hlaeja-development/blob/master/doc/rsa_key.md) documentation.*
 
-To authenticate with Gradle to access repositories that require authentication, you can set your user and token in the `gradle.properties` file.
+### Global Settings
 
-Here's how you can do it:
+This services rely on a set of global settings to configure development environments. These settings, managed through Gradle properties or environment variables.
 
-1. Open or create the `gradle.properties` file in your Gradle user home directory:
+*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.*
 
-  - On Unix-like systems (Linux, macOS), this directory is typically `~/.gradle/`.
+#### Gradle Properties
-  - 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

@@ -18,6 +18,8 @@ dependencies {
     implementation(hlaeja.micrometer.registry.influx)
     implementation(hlaeja.library.hlaeja.common.messages)
     implementation(hlaeja.springboot.starter.actuator)
+    implementation(hlaeja.springboot.starter.cache)
+    implementation(hlaeja.springboot.starter.redis)
     implementation(hlaeja.springboot.starter.webflux)
 
     runtimeOnly(hlaeja.jjwt.impl)

http/configuration.http

@@ -1,3 +1,3 @@
-### get measurement
+### get configuration
 GET {{hostname}}/configuration
-Identity: 0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ.0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ.0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ
+Identity: {{identity}}

http/http-client.env.json

@@ -1,8 +1,10 @@
 {
   "development": {
-        "hostname": "https://localhost:8443"
+    "hostname": "https://localhost:8443",
+    "identity": "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ.0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ.0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"
   },
   "docker": {
-        "hostname": "https://localhost:9000"
+    "hostname": "https://localhost:9000",
+    "identity": "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ.0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ.0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"
   }
 }

http/measurement.http

@@ -1,11 +1,11 @@
 ### get measurement
 GET {{hostname}}/measurement
-Identity: 0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ.0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ.0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ
+Identity: {{identity}}
 
 ### add measurement for all
 POST {{hostname}}/measurement
 Content-Type: application/json
-Identity: 0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ.0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ.0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ
+Identity: {{identity}}
 
 {
   "button0": 0,
@@ -16,8 +16,8 @@ Identity: 0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ.0123456789ABCDEFGHIJKLMNOPQRSTUVW
 ### add measurement for one
 POST {{hostname}}/measurement
 Content-Type: application/json
-Identity: 0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ.0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ.0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ
+Identity: {{identity}}
 
 {
-  "button0": 0
+  "button0": 1
 }

src/main/kotlin/ltd/hlaeja/Application.kt

@@ -1,5 +1,6 @@
 package ltd.hlaeja
 
+import ltd.hlaeja.property.CacheProperty
 import ltd.hlaeja.property.DeviceConfigurationProperty
 import ltd.hlaeja.property.DeviceDataProperty
 import ltd.hlaeja.property.DeviceRegistryProperty
@@ -7,8 +8,11 @@ import ltd.hlaeja.property.JwtProperty
 import org.springframework.boot.autoconfigure.SpringBootApplication
 import org.springframework.boot.context.properties.EnableConfigurationProperties
 import org.springframework.boot.runApplication
+import org.springframework.cache.annotation.EnableCaching
 
+@EnableCaching
 @EnableConfigurationProperties(
+    CacheProperty::class,
     DeviceConfigurationProperty::class,
     DeviceDataProperty::class,
     DeviceRegistryProperty::class,

src/main/kotlin/ltd/hlaeja/configuration/RedisCacheConfiguration.kt

@@ -0,0 +1,26 @@
+package ltd.hlaeja.configuration
+
+import java.time.Duration
+import ltd.hlaeja.exception.CacheException
+import ltd.hlaeja.property.CacheProperty
+import org.springframework.context.annotation.Bean
+import org.springframework.context.annotation.Configuration
+import org.springframework.data.redis.cache.RedisCacheConfiguration
+import org.springframework.data.redis.cache.RedisCacheManager
+import org.springframework.data.redis.core.RedisTemplate
+
+@Configuration
+class RedisCacheConfiguration(
+    private val cacheProperty: CacheProperty,
+) {
+
+    @Bean
+    fun cacheManager(
+        redisTemplate: RedisTemplate<String, String>,
+    ): RedisCacheManager = redisTemplate.connectionFactory
+        ?.let { RedisCacheManager.builder(it).cacheDefaults(getRedisCacheConfiguration()).build() }
+        ?: throw CacheException("Redis connection factory is not set")
+
+    private fun getRedisCacheConfiguration(): RedisCacheConfiguration = RedisCacheConfiguration.defaultCacheConfig()
+        .entryTtl(Duration.ofMinutes(cacheProperty.timeToLive))
+}

src/main/kotlin/ltd/hlaeja/exception/CacheException.kt

@@ -0,0 +1,23 @@
+package ltd.hlaeja.exception
+
+@Suppress("unused")
+class CacheException : Exception {
+
+    constructor() : super()
+
+    constructor(message: String) : super(message)
+
+    constructor(cause: Throwable) : super(cause)
+
+    constructor(
+        message: String,
+        cause: Throwable,
+    ) : super(message, cause)
+
+    constructor(
+        message: String,
+        cause: Throwable,
+        enableSuppression: Boolean,
+        writableStackTrace: Boolean,
+    ) : super(message, cause, enableSuppression, writableStackTrace)
+}

src/main/kotlin/ltd/hlaeja/property/CacheProperty.kt

@@ -0,0 +1,8 @@
+package ltd.hlaeja.property
+
+import org.springframework.boot.context.properties.ConfigurationProperties
+
+@ConfigurationProperties(prefix = "cache")
+data class CacheProperty(
+    val timeToLive: Long,
+)

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

@@ -7,6 +7,7 @@ import java.util.UUID
 import ltd.hlaeja.library.deviceRegistry.Identity
 import ltd.hlaeja.property.DeviceRegistryProperty
 import ltd.hlaeja.util.deviceRegistryIdentityDevice
+import org.springframework.cache.annotation.Cacheable
 import org.springframework.http.HttpStatus.SERVICE_UNAVAILABLE
 import org.springframework.stereotype.Service
 import org.springframework.web.ErrorResponseException
@@ -31,6 +32,7 @@ class DeviceRegistryService(
         .description("Number of failed device identity calls")
         .register(meterRegistry)
 
+    @Cacheable(value = ["identity"], key = "#device")
     suspend fun getIdentityFromDevice(
         device: UUID,
     ): Identity.Response = try {

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

@@ -1,13 +1,16 @@
 package ltd.hlaeja.service
 
 import io.github.oshai.kotlinlogging.KotlinLogging
+import io.jsonwebtoken.JwtException
 import io.jsonwebtoken.JwtParser
 import io.jsonwebtoken.Jwts
 import java.util.UUID
 import ltd.hlaeja.library.deviceRegistry.Identity
 import ltd.hlaeja.property.JwtProperty
 import ltd.hlaeja.util.PublicKeyProvider
+import org.springframework.http.HttpStatus
 import org.springframework.stereotype.Service
+import org.springframework.web.server.ResponseStatusException
 
 private val log = KotlinLogging.logger {}
 
@@ -23,8 +26,13 @@ class JwtService(
 
     suspend fun getIdentity(
         identityToken: String,
-    ): Identity.Response = readIdentity(identityToken)
+    ): Identity.Response = try {
+        readIdentity(identityToken)
             .let { deviceRegistry.getIdentityFromDevice(it) }
+    } catch (e: JwtException) {
+        log.warn { e.localizedMessage }
+        throw ResponseStatusException(HttpStatus.UNAUTHORIZED)
+    }
 
     private suspend fun readIdentity(
         identity: String,

src/main/resources/META-INF/additional-spring-configuration-metadata.json

@@ -39,6 +39,11 @@
       "name": "device-configuration.url",
       "type": "java.lang.String",
       "description": "Url for device configuration service."
+    },
+    {
+      "name": "cache.time-to-live",
+      "type": "java.lang.Long",
+      "description": "Cache expiration in minutes."
     }
   ]
 }

src/main/resources/application.yml

@@ -9,6 +9,12 @@ spring:
       os:
         name: "%APP_BUILD_OS_NAME%"
         version: "%APP_BUILD_OS_VERSION%"
+  cache:
+    type: redis
+  data:
+    redis:
+      port: 6379
+      database: 1
 
 management:
   endpoints:
@@ -29,6 +35,9 @@ management:
         bucket: hlaeja
         org: hlaeja_ltd
 
+cache:
+  time-to-live: 10
+
 jwt:
   public-key: cert/public_key.pem
 
@@ -40,6 +49,9 @@ spring:
   config:
     activate:
       on-profile: development
+  data:
+    redis:
+      host: localhost
 
 management:
   metrics:
@@ -76,6 +88,9 @@ spring:
   config:
     activate:
       on-profile: docker
+  data:
+    redis:
+      host: Redis
 
 management:
   metrics:

src/test/resources/application.yml

@@ -6,3 +6,5 @@ device-data:
   url: http://localhost:9020
 device-configuration:
   url: http://localhost:9030
+cache:
+  time-to-live: 10