1 files changed, 116 insertions, 0 deletions
diff --git a/sources/hv-collector-configuration/src/main/kotlin/org/onap/dcae/collectors/veshv/config/impl/ConfigurationTransformer.kt b/sources/hv-collector-configuration/src/main/kotlin/org/onap/dcae/collectors/veshv/config/impl/ConfigurationTransformer.kt
new file mode 100644
index 00000000..08cce136
--- /dev/null
+++ b/sources/hv-collector-configuration/src/main/kotlin/org/onap/dcae/collectors/veshv/config/impl/ConfigurationTransformer.kt
@@ -0,0 +1,116 @@
+/*
+ * ============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.config.impl
+
+import arrow.core.None
+import arrow.core.Option
+import arrow.core.getOrElse
+import arrow.core.toOption
+import org.onap.dcae.collectors.veshv.config.api.model.CbsConfiguration
+import org.onap.dcae.collectors.veshv.config.api.model.CollectorConfiguration
+import org.onap.dcae.collectors.veshv.config.api.model.HvVesConfiguration
+import org.onap.dcae.collectors.veshv.config.api.model.Route
+import org.onap.dcae.collectors.veshv.config.api.model.ServerConfiguration
+import org.onap.dcae.collectors.veshv.ssl.boundary.SecurityConfiguration
+import org.onap.dcae.collectors.veshv.utils.logging.LogLevel
+import org.onap.dcae.collectors.veshv.utils.logging.Logger
+import org.onap.dcaegen2.services.sdk.security.ssl.ImmutableSecurityKeys
+import org.onap.dcaegen2.services.sdk.security.ssl.ImmutableSecurityKeysStore
+import org.onap.dcaegen2.services.sdk.security.ssl.Passwords
+import java.nio.file.Paths
+import java.time.Duration
+
+internal class ConfigurationTransformer {
+
+    fun toFinalConfiguration(validatedConfig: ValidatedPartialConfiguration): HvVesConfiguration {
+        val serverConfiguration = toServerConfiguration(validatedConfig)
+
+        val cbsConfiguration = toCbsConfiguration(validatedConfig.cbsConfiguration)
+
+        val securityConfiguration = determineSecurityConfiguration(validatedConfig)
+
+        val collectorConfiguration = toCollectorConfiguration(validatedConfig)
+
+        val logLevel = determineLogLevel(validatedConfig.logLevel)
+
+        return HvVesConfiguration(
+                serverConfiguration,
+                cbsConfiguration,
+                securityConfiguration,
+                collectorConfiguration,
+                logLevel
+        )
+    }
+
+    fun toCbsConfiguration(cbsConfiguration: ValidatedCbsConfiguration) = CbsConfiguration(
+            Duration.ofSeconds(cbsConfiguration.firstRequestDelaySec),
+            Duration.ofSeconds(cbsConfiguration.requestIntervalSec)
+    )
+
+    private fun toServerConfiguration(validatedConfig: ValidatedPartialConfiguration) = ServerConfiguration(
+            validatedConfig.listenPort,
+            Duration.ofSeconds(validatedConfig.idleTimeoutSec)
+    )
+
+    private fun determineSecurityConfiguration(validConfig: ValidatedPartialConfiguration) =
+            validConfig.securityConfiguration.fold({ SecurityConfiguration(None) }, { createSecurityConfiguration(it) })
+
+    private fun toCollectorConfiguration(validatedConfig: ValidatedPartialConfiguration) =
+            validatedConfig.streamPublishers.map { Route(it.name(), it) }
+                    .let { routing ->
+                        CollectorConfiguration(
+                                routing,
+                                determineMaxPayloadSize(routing)
+                        )
+                    }
+
+    private fun createSecurityConfiguration(paths: ValidatedSecurityPaths) = SecurityConfiguration(
+            ImmutableSecurityKeys.builder()
+                    .keyStore(ImmutableSecurityKeysStore.of(Paths.get(paths.keyStoreFile)))
+                    .keyStorePassword(Passwords.fromPath(Paths.get(paths.keyStorePasswordFile)))
+                    .trustStore(ImmutableSecurityKeysStore.of(Paths.get(paths.trustStoreFile)))
+                    .trustStorePassword(Passwords.fromPath(Paths.get(paths.trustStorePasswordFile)))
+                    .build()
+                    .toOption()
+    )
+
+    private fun determineMaxPayloadSize(routing: List<Route>) =
+            routing.map { it.sink.maxPayloadSizeBytes() }.max() ?: useDefaultMaxPayloadSize()
+
+    private fun determineLogLevel(logLevel: Option<LogLevel>) =
+            logLevel.getOrElse(::useDefaultLogLevel)
+
+    private fun useDefaultMaxPayloadSize() = DEFAULT_MAX_PAYLOAD_SIZE.also {
+        logger.warn {
+            "Failed to determine \"maxPayloadSizeBytes\" field from routing. Using default ($it)"
+        }
+    }
+
+    private fun useDefaultLogLevel() = DEFAULT_LOG_LEVEL.also {
+        logger.warn { "Missing or invalid \"logLevel\" field. Using default log level ($it)" }
+    }
+
+    companion object {
+        private val logger = Logger(ConfigurationTransformer::class)
+
+        private val DEFAULT_LOG_LEVEL = LogLevel.INFO
+        private const val DEFAULT_MAX_PAYLOAD_SIZE = 1024 * 1024
+    }
+}