feat(SimpleCachePlugin.kt): add error handling for failed calls (#20)

* feat(SimpleCachePlugin.kt): add error handling for failed calls

Add `on(CallFailed)` hook to handle and log failed calls, improving
error management within the SimpleCachePlugin.

* chore: bump version to 0.4.4

* unit test

Author: ShiinaKin

build.gradle.kts

@@ -6,7 +6,7 @@ allprojects {
 
     group = "com.ucasoft.ktor"
 
-    version = "0.4.3"
+    version = "0.4.4"
 
     repositories {
         mavenCentral()

ktor-simple-cache/README.md

@@ -1,15 +1,15 @@
 # Ktor Simple Cache
 Base solution which provides the plugin implementation and abstract class for cache providers.
 
-[![Maven Central with version prefix filter](https://img.shields.io/maven-central/v/com.ucasoft.ktor/ktor-simple-cache/0.4.3?color=blue)](https://search.maven.org/artifact/com.ucasoft.ktor/ktor-simple-cache/0.4.3/jar)
+[![Maven Central with version prefix filter](https://img.shields.io/maven-central/v/com.ucasoft.ktor/ktor-simple-cache/0.4.4?color=blue)](https://search.maven.org/artifact/com.ucasoft.ktor/ktor-simple-cache/0.4.4/jar)
 ## Setup
 ### Gradle
 ```kotlin
 repositories {
     mavenCentral()
 }
 
-implementation("com.ucasoft.ktor:ktor-simple-cache:0.4.3")
+implementation("com.ucasoft.ktor:ktor-simple-cache:0.4.4")
 ```
 ## Usage
 ```kotlin

ktor-simple-cache/src/main/kotlin/com/ucasoft/ktor/simpleCache/SimpleCachePlugin.kt

@@ -2,6 +2,7 @@ package com.ucasoft.ktor.simpleCache
 
 import io.ktor.http.*
 import io.ktor.server.application.*
+import io.ktor.server.application.hooks.*
 import io.ktor.server.request.*
 import io.ktor.server.response.*
 import io.ktor.util.*
@@ -24,6 +25,10 @@ val SimpleCachePlugin = createRouteScopedPlugin(name = "SimpleCachePlugin", ::Si
             it.respond(cache)
         }
     }
+    on(CallFailed) { _, e ->
+        provider.badResponse()
+        throw e
+    }
     onCallRespond { call, body ->
         if ((call.response.status() ?: HttpStatusCode.OK) >= HttpStatusCode.BadRequest) {
             provider.badResponse()

ktor-simple-cache/src/test/kotlin/com/ucasoft/ktor/simpleCache/SimpleCacheTests.kt

@@ -157,6 +157,29 @@ internal class SimpleCacheTests {
         }
     }
 
+    @Test
+    fun `check route thrown exceptions aren not locked`() {
+        with(buildTestEngine(buildProvider(), Application::testApplication)) {
+
+            runBlocking {
+                val totalThreads = 100
+                val deferred = (1..totalThreads).map {
+                    async {
+                        shouldThrow<RuntimeException> {
+                            client.get("/exception")
+                        }
+                    }
+                }
+
+                val result = deferred.awaitAll().map { it.message }.groupBy { it }
+                    .map { it.key to it.value.size }
+                result.shouldBeSingleton {
+                    it.second.shouldBe(totalThreads)
+                }
+            }
+        }
+    }
+
     @Test
     fun `check all parameters`() {
         val firstCacheKey = "/check?param1=value1&param2=value2"

ktor-simple-cache/src/test/kotlin/com/ucasoft/ktor/simpleCache/TestApplication.kt

@@ -30,6 +30,9 @@ fun Application.testApplication() {
             get("/bad") {
                 call.respond(HttpStatusCode.BadRequest, "Bad request")
             }
+            get("/exception") {
+                throw RuntimeException("Just an exception")
+            }
         }
     }
 }

ktor-simple-memory-cache/README.md

@@ -1,15 +1,15 @@
 # Ktor Simple Memory Cache
 Memory cache provider for Ktor Simple Cache plugin
 
-[![Maven Central with version prefix filter](https://img.shields.io/maven-central/v/com.ucasoft.ktor/ktor-simple-memory-cache/0.4.3?color=blue)](https://search.maven.org/artifact/com.ucasoft.ktor/ktor-simple-memory-cache/0.4.3/jar)
+[![Maven Central with version prefix filter](https://img.shields.io/maven-central/v/com.ucasoft.ktor/ktor-simple-memory-cache/0.4.4?color=blue)](https://search.maven.org/artifact/com.ucasoft.ktor/ktor-simple-memory-cache/0.4.4/jar)
 ## Setup
 ### Gradle
 ```kotlin
 repositories {
     mavenCentral()
 }
 
-implementation("com.ucasoft.ktor:ktor-simple-memory-cache:0.4.3")
+implementation("com.ucasoft.ktor:ktor-simple-memory-cache:0.4.4")
 ```
 ## Usage
 ```kotlin

ktor-simple-redis-cache/README.md

@@ -1,15 +1,15 @@
 # Ktor Simple Redis Cache
 Redis cache provider for Ktor Simple Cache plugin
 
-[![Maven Central with version prefix filter](https://img.shields.io/maven-central/v/com.ucasoft.ktor/ktor-simple-redis-cache/0.4.3?color=blue)](https://search.maven.org/artifact/com.ucasoft.ktor/ktor-simple-redis-cache/0.4.3/jar)
+[![Maven Central with version prefix filter](https://img.shields.io/maven-central/v/com.ucasoft.ktor/ktor-simple-redis-cache/0.4.4?color=blue)](https://search.maven.org/artifact/com.ucasoft.ktor/ktor-simple-redis-cache/0.4.4/jar)
 ## Setup
 ### Gradle
 ```kotlin
 repositories {
     mavenCentral()
 }
 
-implementation("com.ucasoft.ktor:ktor-simple-redis-cache:0.4.3")
+implementation("com.ucasoft.ktor:ktor-simple-redis-cache:0.4.4")
 ```
 ## Usage
 ```kotlin