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/*
* ============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.Some
import arrow.core.getOrElse
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.ServerConfiguration
import org.onap.dcae.collectors.veshv.config.api.model.ValidationException
import org.onap.dcae.collectors.veshv.ssl.boundary.SecurityConfiguration
import org.onap.dcae.collectors.veshv.ssl.boundary.SecurityKeysPaths
import org.onap.dcae.collectors.veshv.utils.arrow.OptionUtils.binding
import org.onap.dcae.collectors.veshv.utils.arrow.mapBinding
import org.onap.dcae.collectors.veshv.utils.arrow.doOnEmpty
import org.onap.dcae.collectors.veshv.utils.logging.LogLevel
import org.onap.dcae.collectors.veshv.utils.logging.Logger
import java.io.File
/**
* @author Jakub Dudycz <jakub.dudycz@nokia.com>
* @since March 2019
*/
internal class ConfigurationValidator {
fun validate(partialConfig: PartialConfiguration) =
logger.info { "About to validate configuration: $partialConfig" }.let {
binding {
val logLevel = determineLogLevel(partialConfig.logLevel)
val serverConfiguration = validatedServerConfiguration(partialConfig)
.doOnEmpty { logger.debug { "Cannot bind server configuration" } }
.bind()
val cbsConfiguration = validatedCbsConfiguration(partialConfig)
.doOnEmpty { logger.debug { "Cannot bind cbs configuration" } }
.bind()
val securityConfiguration = determineSecurityConfiguration(partialConfig)
.doOnEmpty { logger.debug { "Cannot bind security configuration" } }
.bind()
val collectorConfiguration = validatedCollectorConfig(partialConfig)
.doOnEmpty { logger.debug { "Cannot bind collector configuration" } }
.bind()
HvVesConfiguration(
serverConfiguration,
cbsConfiguration,
securityConfiguration,
collectorConfiguration,
logLevel
)
}.toEither { ValidationException("Some required configuration options are missing") }
}
private fun determineLogLevel(logLevel: Option<LogLevel>) =
logLevel.getOrElse {
logger.warn {
"Missing or invalid \"logLevel\" field. " +
"Using default log level ($DEFAULT_LOG_LEVEL)"
}
DEFAULT_LOG_LEVEL
}
private fun validatedServerConfiguration(partial: PartialConfiguration) =
partial.mapBinding {
ServerConfiguration(
it.listenPort.bind(),
it.idleTimeoutSec.bind(),
it.maxPayloadSizeBytes.bind()
)
}
internal fun validatedCbsConfiguration(partial: PartialConfiguration) =
partial.mapBinding {
CbsConfiguration(
it.firstRequestDelaySec.bind(),
it.requestIntervalSec.bind()
)
}
private fun determineSecurityConfiguration(partial: PartialConfiguration) =
partial.sslDisable.fold({ createSecurityConfiguration(partial) }, { sslDisabled ->
if (sslDisabled) {
Some(SecurityConfiguration(None))
} else {
createSecurityConfiguration(partial)
}
})
private fun createSecurityConfiguration(partial: PartialConfiguration): Option<SecurityConfiguration> =
partial.mapBinding {
SecurityConfiguration(
Option.fromNullable(SecurityKeysPaths(
File(it.keyStoreFile.bind()).toPath(),
it.keyStorePassword.bind(),
File(it.trustStoreFile.bind()).toPath(),
it.trustStorePassword.bind()
).asImmutableSecurityKeys())
)
}
private fun validatedCollectorConfig(partial: PartialConfiguration) =
partial.mapBinding {
CollectorConfiguration(
it.routing.bind()
)
}
companion object {
val DEFAULT_LOG_LEVEL = LogLevel.INFO
private val logger = Logger(ConfigurationValidator::class)
}
}
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