Move ConfigurationProvider to config module

Change-Id: Ic6f955f4e777e06e7c7eed6e08c0cac470e9a51d
Issue-ID: DCAEGEN2-1347
Signed-off-by: Piotr Jaszczyk <piotr.jaszczyk@nokia.com>

1 files changed, 206 insertions, 0 deletions

diff --git a/sources/hv-collector-configuration/src/test/kotlin/org/onap/dcae/collectors/veshv/config/impl/CbsConfigurationProviderTest.kt b/sources/hv-collector-configuration/src/test/kotlin/org/onap/dcae/collectors/veshv/config/impl/CbsConfigurationProviderTest.kt
new file mode 100644
index 00000000..0cbc0e4a
--- /dev/null
+++ b/sources/hv-collector-configuration/src/test/kotlin/org/onap/dcae/collectors/veshv/config/impl/CbsConfigurationProviderTest.kt
@@ -0,0 +1,206 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018-2019 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.config.impl
+
+import com.google.gson.JsonParser
+import com.nhaarman.mockitokotlin2.any
+import com.nhaarman.mockitokotlin2.eq
+import com.nhaarman.mockitokotlin2.mock
+import com.nhaarman.mockitokotlin2.times
+import com.nhaarman.mockitokotlin2.verify
+import com.nhaarman.mockitokotlin2.whenever
+import org.assertj.core.api.Assertions.assertThat
+import org.jetbrains.spek.api.Spek
+import org.jetbrains.spek.api.dsl.describe
+import org.jetbrains.spek.api.dsl.given
+import org.jetbrains.spek.api.dsl.it
+import org.jetbrains.spek.api.dsl.on
+import org.onap.dcae.collectors.veshv.config.api.ConfigurationStateListener
+import org.onap.dcae.collectors.veshv.config.api.model.CbsConfiguration
+import org.onap.dcaegen2.services.sdk.model.streams.ImmutableAafCredentials
+import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.api.CbsClient
+import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.api.streams.StreamFromGsonParsers
+import reactor.core.publisher.Flux
+import reactor.core.publisher.Mono
+import reactor.retry.Retry
+import reactor.test.StepVerifier
+import java.time.Duration
+
+/**
+ * @author Jakub Dudycz <jakub.dudycz@nokia.com>
+ * @since May 2018
+ */
+internal object CbsConfigurationProviderTest : Spek({
+
+    describe("Configuration provider") {
+
+        val cbsClient: CbsClient = mock()
+        val cbsClientMock: Mono<CbsClient> = Mono.just(cbsClient)
+        val configStateListener: ConfigurationStateListener = mock()
+
+        given("configuration is never in cbs") {
+            val configProvider = constructConfigurationProvider(cbsClientMock, configStateListener)
+
+            on("waiting for configuration") {
+                val waitTime = Duration.ofMillis(100)
+
+                it("should not get it") {
+                    StepVerifier.create(configProvider().take(1))
+                            .expectNoEvent(waitTime)
+                }
+            }
+        }
+
+        given("valid configuration from cbs") {
+            val configProvider = constructConfigurationProvider(cbsClientMock, configStateListener)
+
+            on("new configuration") {
+                whenever(cbsClient.updates(any(), eq(firstRequestDelay), eq(requestInterval)))
+                        .thenReturn(Flux.just(validConfiguration))
+                it("should use received configuration") {
+
+                    StepVerifier.create(configProvider().take(1))
+                            .consumeNextWith {
+                                val routes = it.collector.orNull()!!.routing.orNull()!!
+                                val route1 = routes.elementAt(0)
+                                val route2 = routes.elementAt(1)
+                                val receivedSink1 = route1.sink
+                                val receivedSink2 = route2.sink
+
+                                assertThat(route1.domain).isEqualTo(PERF3GPP_REGIONAL)
+                                assertThat(receivedSink1.aafCredentials()).isEqualTo(aafCredentials1)
+                                assertThat(receivedSink1.bootstrapServers())
+                                        .isEqualTo("dmaap-mr-kafka-0.regional:6060,dmaap-mr-kafka-1.regional:6060")
+                                assertThat(receivedSink1.topicName()).isEqualTo("REG_HVVES_PERF3GPP")
+
+                                assertThat(route2.domain).isEqualTo(PERF3GPP_CENTRAL)
+                                assertThat(receivedSink2.aafCredentials()).isEqualTo(aafCredentials2)
+                                assertThat(receivedSink2.bootstrapServers())
+                                        .isEqualTo("dmaap-mr-kafka-0.central:6060,dmaap-mr-kafka-1.central:6060")
+                                assertThat(receivedSink2.topicName()).isEqualTo("CEN_HVVES_PERF3GPP")
+
+                            }.verifyComplete()
+                }
+            }
+
+        }
+        given("invalid configuration from cbs") {
+            val iterationCount = 3L
+            val configProvider = constructConfigurationProvider(
+                    cbsClientMock, configStateListener, iterationCount
+            )
+
+            on("new configuration") {
+                whenever(cbsClient.updates(any(), eq(firstRequestDelay), eq(requestInterval)))
+                        .thenReturn(Flux.just(invalidConfiguration))
+
+                it("should interrupt the flux") {
+                    StepVerifier.create(configProvider())
+                            .verifyError()
+                }
+
+                it("should call state listener when retrying") {
+                    verify(configStateListener, times(iterationCount.toInt())).retrying()
+                }
+            }
+        }
+    }
+
+})
+
+
+val PERF3GPP_REGIONAL = "perf3gpp_regional"
+val PERF3GPP_CENTRAL = "perf3gpp_central"
+
+private val aafCredentials1 = ImmutableAafCredentials.builder()
+        .username("client")
+        .password("very secure password")
+        .build()
+
+private val aafCredentials2 = ImmutableAafCredentials.builder()
+        .username("other_client")
+        .password("another very secure password")
+        .build()
+
+private val validConfiguration = JsonParser().parse("""
+{
+    "streams_publishes": {
+        "$PERF3GPP_REGIONAL": {
+            "type": "kafka",
+            "aaf_credentials": {
+                "username": "client",
+                "password": "very secure password"
+            },
+            "kafka_info": {
+                "bootstrap_servers": "dmaap-mr-kafka-0.regional:6060,dmaap-mr-kafka-1.regional:6060",
+                "topic_name": "REG_HVVES_PERF3GPP"
+            }
+        },
+        "$PERF3GPP_CENTRAL": {
+            "type": "kafka",
+            "aaf_credentials": {
+                "username": "other_client",
+                "password": "another very secure password"
+            },
+            "kafka_info": {
+                "bootstrap_servers": "dmaap-mr-kafka-0.central:6060,dmaap-mr-kafka-1.central:6060",
+                "topic_name": "CEN_HVVES_PERF3GPP"
+            }
+        }
+    }
+}""").asJsonObject
+
+private val invalidConfiguration = JsonParser().parse("""
+{
+    "streams_publishes": {
+        "$PERF3GPP_REGIONAL": {
+            "type": "kafka",
+            "aaf_credentials": {
+                "username": "client",
+                "password": "very secure password"
+            },
+            "kafka_info": {
+                "bootstrap_servers": "dmaap-mr-kafka-0.regional:6060,dmaap-mr-kafka-1.regional:6060",
+                "popic_name": "REG_HVVES_PERF3GPP"
+            }
+        }
+    }
+}""").asJsonObject
+
+private val firstRequestDelay = Duration.ofMillis(1)
+private val requestInterval = Duration.ofMillis(1)
+private val streamParser = StreamFromGsonParsers.kafkaSinkParser()
+
+private fun constructConfigurationProvider(cbsClientMono: Mono<CbsClient>,
+                                           configurationStateListener: ConfigurationStateListener,
+                                           iterationCount: Long = 1
+): CbsConfigurationProvider {
+
+    val retry = Retry.onlyIf<Any> { it.iteration() <= iterationCount }.fixedBackoff(Duration.ofNanos(1))
+
+    return CbsConfigurationProvider(
+            cbsClientMono,
+            CbsConfiguration(firstRequestDelay, requestInterval),
+            streamParser,
+            configurationStateListener,
+            retry,
+            { mapOf("k" to "v") }
+    )
+}