Implement kafka consumer metrics

- bump Micrometer version 1.0.8 -> 1.1.5

Change-Id: I7a00fbf252df0f31f12f8743e8719701bd282ce2
Issue-ID: DCAEGEN2-1626
Signed-off-by: Filip Krzywka <filip.krzywka@nokia.com>

2 files changed, 60 insertions, 0 deletions

diff --git a/sources/hv-collector-test-utils/pom.xml b/sources/hv-collector-test-utils/pom.xml
index bf70e180..97737e84 100644
--- a/sources/hv-collector-test-utils/pom.xml
+++ b/sources/hv-collector-test-utils/pom.xml
@@ -86,5 +86,10 @@
             <artifactId>logback-classic</artifactId>
             <scope>compile</scope>
         </dependency>
+        <dependency>
+            <groupId>io.micrometer</groupId>
+            <artifactId>micrometer-registry-prometheus</artifactId>
+            <scope>compile</scope>
+        </dependency>
     </dependencies>
 </project>
\ No newline at end of file
diff --git a/sources/hv-collector-test-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/tests/utils/metrics.kt b/sources/hv-collector-test-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/tests/utils/metrics.kt
new file mode 100644
index 00000000..1aefdb34
--- /dev/null
+++ b/sources/hv-collector-test-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/tests/utils/metrics.kt
@@ -0,0 +1,55 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2019 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.tests.utils
+
+import arrow.core.Try
+import io.micrometer.core.instrument.Counter
+import io.micrometer.core.instrument.Gauge
+import io.micrometer.core.instrument.Tags
+import io.micrometer.core.instrument.Timer
+import io.micrometer.core.instrument.search.RequiredSearch
+import io.micrometer.prometheus.PrometheusMeterRegistry
+import org.assertj.core.api.Assertions
+
+
+fun <T> PrometheusMeterRegistry.verifyGauge(name: String, verifier: (Gauge) -> T) =
+        verifyMeter(findMeter(name), RequiredSearch::gauge, verifier)
+
+fun <T> PrometheusMeterRegistry.verifyTimer(name: String, verifier: (Timer) -> T) =
+        verifyMeter(findMeter(name), RequiredSearch::timer, verifier)
+
+fun <T> PrometheusMeterRegistry.verifyCounter(name: String, verifier: (Counter) -> T) =
+        verifyCounter(findMeter(name), verifier)
+
+fun <T> PrometheusMeterRegistry.verifyCounter(name: String, tags: Tags, verifier: (Counter) -> T) =
+        verifyCounter(findMeter(name).tags(tags), verifier)
+
+private fun PrometheusMeterRegistry.findMeter(meterName: String) = RequiredSearch.`in`(this).name(meterName)
+
+private fun <T> verifyCounter(search: RequiredSearch, verifier: (Counter) -> T) =
+        verifyMeter(search, RequiredSearch::counter, verifier)
+
+private inline fun <M, T> verifyMeter(search: RequiredSearch,
+                               map: (RequiredSearch) -> M,
+                               verifier: (M) -> T) =
+        Try { map(search) }.fold(
+                { ex -> Assertions.assertThat(ex).doesNotThrowAnyException() },
+                verifier
+        )
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