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package org.onap.vid.services
import com.fasterxml.jackson.module.kotlin.readValue
import org.apache.commons.lang3.StringUtils
import org.apache.commons.lang3.StringUtils.substringAfterLast
import org.onap.portalsdk.core.logging.logic.EELFLoggerDelegate
import org.onap.portalsdk.core.util.SystemProperties
import org.onap.vid.model.VersionAndFeatures
import org.onap.vid.utils.JACKSON_OBJECT_MAPPER
import org.springframework.stereotype.Service
import java.util.regex.Pattern
import javax.inject.Inject
import javax.servlet.ServletContext
@Service
class VersionService
@Inject
constructor(internal var servletContext: ServletContext) {
private val Logger = EELFLoggerDelegate.getLogger(VersionService::class.java)
private val versionAndFeatures: VersionAndFeatures by lazy {
loadVersionAndFeatures()
}
private fun readBuildNumber(): String {
val resource = servletContext.getResource("/app/vid/scripts/constants/version.json")
return JACKSON_OBJECT_MAPPER.readValue<Map<String, String>>(resource)["Version"]!!
}
//protected so can be easily tested in UT
protected fun readFeatureSet(): String {
return SystemProperties.getProperty("features.set.filename")
}
//protected so can be easily tested in UT
protected fun buildDisplayVersion(features: String, build: String): String {
val matcher = Pattern.compile("([^/]+?)(\\.features|$)").matcher(features)
val majorByFeatures = if (matcher.find()) matcher.group(1) else features
val buildByVersion = StringUtils.defaultIfBlank(substringAfterLast(build, "."), build)
return StringUtils.join(majorByFeatures, ".", buildByVersion)
}
fun retrieveVersionAndFeatures(): VersionAndFeatures {
return try {
versionAndFeatures
} catch (exception: Exception) {
Logger.error("Failed to read build number or feature properties settings from version file", exception)
VersionAndFeatures.unknown
}
}
private fun loadVersionAndFeatures(): VersionAndFeatures {
val featureSet = readFeatureSet();
val build = readBuildNumber();
val displayVersion = buildDisplayVersion(featureSet, build)
return VersionAndFeatures(featureSet, build, displayVersion)
}
//might throw an exception
fun retrieveBuildNumber(): String {
return versionAndFeatures.build
}
}
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