[feature] add some api, etc..

- add some api
- add /metrics routing

webserver/src/main/kotlin/space/mori/chzzk_bot/webserver/Main.kt

@@ -11,6 +11,7 @@ import io.ktor.serialization.kotlinx.json.*
 import io.ktor.server.application.*
 import io.ktor.server.auth.*
 import io.ktor.server.engine.*
+import io.ktor.server.metrics.micrometer.MicrometerMetrics
 import io.ktor.server.netty.*
 import io.ktor.server.plugins.contentnegotiation.*
 import io.ktor.server.plugins.cors.routing.*
@@ -19,9 +20,16 @@ import io.ktor.server.response.*
 import io.ktor.server.routing.*
 import io.ktor.server.sessions.*
 import io.ktor.server.websocket.*
+import io.micrometer.core.instrument.binder.jvm.JvmGcMetrics
+import io.micrometer.core.instrument.binder.jvm.JvmMemoryMetrics
+import io.micrometer.core.instrument.binder.system.ProcessorMetrics
+import io.micrometer.prometheusmetrics.PrometheusConfig
+import io.micrometer.prometheusmetrics.PrometheusMeterRegistry
 import kotlinx.coroutines.delay
 import kotlinx.serialization.Serializable
 import kotlinx.serialization.json.Json
+import org.koin.core.context.startKoin
+import org.koin.dsl.module
 import org.koin.java.KoinJavaComponent.inject
 import space.mori.chzzk_bot.common.events.CoroutinesEventBus
 import space.mori.chzzk_bot.common.events.UserRegisterEvent
@@ -232,6 +240,18 @@ val server = embeddedServer(Netty, port = 8080, ) {
             }
         }
 
+        val appMicrometerRegistry: PrometheusMeterRegistry by inject(PrometheusMeterRegistry::class.java)
+
+        install(MicrometerMetrics) {
+            registry = appMicrometerRegistry
+
+            meterBinders = listOf(
+                JvmMemoryMetrics(),
+                JvmGcMetrics(),
+                ProcessorMetrics()
+            )
+        }
+
         apiRoutes()
         apiSongRoutes()
         apiCommandRoutes()
@@ -242,6 +262,8 @@ val server = embeddedServer(Netty, port = 8080, ) {
         wsSongRoutes()
         wsSongListRoutes()
 
+        metricRoutes()
+
         swaggerUI("swagger-ui/index.html", "openapi/documentation.yaml") {
             options {
                 version = "1.2.0"

webserver/src/main/kotlin/space/mori/chzzk_bot/webserver/routes/ApiRoutes.kt

@@ -1,6 +1,7 @@
 package space.mori.chzzk_bot.webserver.routes
 
 import io.ktor.http.*
+import io.ktor.server.request.receive
 import io.ktor.server.response.*
 import io.ktor.server.routing.*
 import io.ktor.server.sessions.*
@@ -15,6 +16,7 @@ import kotlinx.coroutines.CompletableDeferred
 import kotlinx.coroutines.withTimeoutOrNull
 import space.mori.chzzk_bot.common.events.ChzzkUserFindEvent
 import space.mori.chzzk_bot.common.events.ChzzkUserReceiveEvent
+import space.mori.chzzk_bot.webserver.routes.GuildSettings
 
 @Serializable
 data class GetUserDTO(
@@ -146,4 +148,48 @@ fun Routing.apiRoutes() {
             call.respond(HttpStatusCode.OK, returnUsers)
         }
     }
-}
+
+    route("/settings") {
+        get {
+            val session = call.sessions.get<UserSession>()
+            if(session == null) {
+                call.respondText("No session found", status = HttpStatusCode.Unauthorized)
+                return@get
+            }
+            val user = UserService.getUser(session.id)
+            if(user == null) {
+                call.respondText("No user found", status = HttpStatusCode.NotFound)
+                return@get
+            }
+
+            call.respond(HttpStatusCode.OK, IUserSettingsDTO(
+                user.isDisabled,
+                user.isDisableStartupMsg
+            ))
+        }
+
+        post {
+            val session = call.sessions.get<UserSession>()
+            val body: IUserSettingsDTO = call.receive()
+            if(session == null) {
+                call.respondText("No session found", status = HttpStatusCode.Unauthorized)
+                return@post
+            }
+            val user = UserService.getUser(session.id)
+            if(user == null) {
+                call.respondText("No user found", status = HttpStatusCode.NotFound)
+                return@post
+            }
+
+            UserService.setIsDisabled(user, body.isBotDisabled)
+            UserService.setIsStartupDisabled(user, body.isBotMsgDisabled)
+
+            call.respond(HttpStatusCode.OK, body)
+        }
+    }
+}
+
+data class IUserSettingsDTO(
+    val isBotDisabled: Boolean,
+    val isBotMsgDisabled: Boolean
+)

webserver/src/main/kotlin/space/mori/chzzk_bot/webserver/routes/MetricRoutes.kt

@@ -0,0 +1,36 @@
+package space.mori.chzzk_bot.webserver.routes
+
+import io.ktor.server.application.ApplicationStopped
+import io.ktor.server.response.respondText
+import io.ktor.server.routing.Routing
+import io.ktor.server.routing.get
+import io.micrometer.prometheusmetrics.PrometheusMeterRegistry
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.SupervisorJob
+import kotlinx.coroutines.cancel
+import org.koin.java.KoinJavaComponent.inject
+import space.mori.chzzk_bot.common.events.CoroutinesEventBus
+import space.mori.chzzk_bot.common.events.UserRegisterEvent
+import space.mori.chzzk_bot.common.metrics.Metrics
+import kotlin.getValue
+
+
+val metricScope = CoroutineScope(SupervisorJob() + Dispatchers.Default)
+fun Routing.metricRoutes() {
+    environment.monitor.subscribe(ApplicationStopped) {
+        metricScope.cancel()
+    }
+
+    val dispatcher: CoroutinesEventBus by inject(CoroutinesEventBus::class.java)
+    val registry: PrometheusMeterRegistry by inject(PrometheusMeterRegistry::class.java)
+
+    dispatcher.subscribe(UserRegisterEvent::class) {
+        Metrics.streamer++
+    }
+
+    get("/metrics") {
+        call.respondText(registry.scrape())
+    }
+
+}