From d30fbe958522a468db545bdbf4d9cd17ec0121ef Mon Sep 17 00:00:00 2001
From: izeye <izeye@naver.com>
Date: Wed, 26 May 2021 22:32:17 +0900
Subject: [PATCH] Apply workaround for
 https://github.com/spring-projects/spring-boot/issues/26630

---
 .../com/izeye/sample/config/MetricsConfig.kt  | 39 +++++++++++++++++++
 .../izeye/sample/config/MetricsConfigTests.kt | 19 +++++++++
 src/test/resources/junit-platform.properties  |  1 +
 3 files changed, 59 insertions(+)
 create mode 100644 src/main/kotlin/com/izeye/sample/config/MetricsConfig.kt
 create mode 100644 src/test/kotlin/com/izeye/sample/config/MetricsConfigTests.kt
 create mode 100644 src/test/resources/junit-platform.properties

diff --git a/src/main/kotlin/com/izeye/sample/config/MetricsConfig.kt b/src/main/kotlin/com/izeye/sample/config/MetricsConfig.kt
new file mode 100644
index 0000000..9778b48
--- /dev/null
+++ b/src/main/kotlin/com/izeye/sample/config/MetricsConfig.kt
@@ -0,0 +1,39 @@
+package com.izeye.sample.config
+
+import io.micrometer.core.instrument.MeterRegistry
+import io.micrometer.core.instrument.binder.MeterBinder
+import org.springframework.boot.actuate.autoconfigure.metrics.MetricsProperties
+import org.springframework.boot.actuate.metrics.data.MetricsRepositoryMethodInvocationListener
+import org.springframework.boot.actuate.metrics.data.RepositoryTagsProvider
+import org.springframework.context.annotation.Bean
+import org.springframework.context.annotation.Configuration
+import org.springframework.context.annotation.Lazy
+
+/**
+ * Configuration for metrics.
+ *
+ * @author Johnny Lim
+ */
+@Configuration
+class MetricsConfig {
+    @Bean
+    fun myMeterBinder(): MeterBinder {
+        return MeterBinder { registry: MeterRegistry -> registry.counter("binder.test") }
+    }
+
+    companion object {
+        // FIXME: See https://github.com/spring-projects/spring-boot/issues/26630
+        @Bean
+        fun metricsRepositoryMethodInvocationListener(
+            metricsProperties: MetricsProperties,
+            @Lazy registry: MeterRegistry,
+            tagsProvider: RepositoryTagsProvider
+        ): MetricsRepositoryMethodInvocationListener {
+            val properties = metricsProperties.data.repository
+            return MetricsRepositoryMethodInvocationListener(
+                registry, tagsProvider, properties.metricName,
+                properties.autotime
+            )
+        }
+    }
+}
diff --git a/src/test/kotlin/com/izeye/sample/config/MetricsConfigTests.kt b/src/test/kotlin/com/izeye/sample/config/MetricsConfigTests.kt
new file mode 100644
index 0000000..57f64c6
--- /dev/null
+++ b/src/test/kotlin/com/izeye/sample/config/MetricsConfigTests.kt
@@ -0,0 +1,19 @@
+package com.izeye.sample.config
+
+import io.micrometer.core.instrument.MeterRegistry
+import org.assertj.core.api.Assertions
+import org.junit.jupiter.api.Test
+import org.springframework.boot.test.context.SpringBootTest
+
+/**
+ * Tests for [MetricsConfig].
+ *
+ * @author Johnny Lim
+ */
+@SpringBootTest
+class MetricsConfigTests(val registry: MeterRegistry) {
+    @Test
+    fun userDefinedMeterBinderWorks() {
+        Assertions.assertThat(registry.find("binder.test").counter()).isNotNull
+    }
+}
diff --git a/src/test/resources/junit-platform.properties b/src/test/resources/junit-platform.properties
new file mode 100644
index 0000000..aae71f1
--- /dev/null
+++ b/src/test/resources/junit-platform.properties
@@ -0,0 +1 @@
+spring.test.constructor.autowire.mode=all