Implant vid-app-common org.onap.vid.job (main and test)

Issue-ID: VID-378

Change-Id: I41b0bdc2c4e3635f3f3319b1cd63cefc61912dfc
Signed-off-by: Einat Vinouze <einat.vinouze@intl.att.com>
Signed-off-by: Ittay Stern <ittay.stern@att.com>

1 files changed, 66 insertions, 0 deletions

diff --git a/vid-app-common/src/main/java/org/onap/vid/services/VersionService.kt b/vid-app-common/src/main/java/org/onap/vid/services/VersionService.kt
new file mode 100644
index 000000000..2fb3e0c08
--- /dev/null
+++ b/vid-app-common/src/main/java/org/onap/vid/services/VersionService.kt
@@ -0,0 +1,66 @@
+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
+    }
+}