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-rw-r--r--vid-app-common/src/main/java/org/onap/vid/properties/FeatureSetsManager.kt82
-rw-r--r--vid-app-common/src/main/java/org/onap/vid/properties/FeaturesTogglingConfiguration.java13
2 files changed, 89 insertions, 6 deletions
diff --git a/vid-app-common/src/main/java/org/onap/vid/properties/FeatureSetsManager.kt b/vid-app-common/src/main/java/org/onap/vid/properties/FeatureSetsManager.kt
new file mode 100644
index 000000000..207bde7aa
--- /dev/null
+++ b/vid-app-common/src/main/java/org/onap/vid/properties/FeatureSetsManager.kt
@@ -0,0 +1,82 @@
+package org.onap.vid.properties
+
+import org.apache.commons.io.filefilter.WildcardFileFilter
+import org.springframework.web.context.request.RequestContextHolder.getRequestAttributes
+import org.springframework.web.context.request.ServletRequestAttributes
+import org.togglz.core.Feature
+import org.togglz.core.manager.FeatureManager
+import org.togglz.core.manager.FeatureManagerBuilder
+import org.togglz.core.repository.file.FileBasedStateRepository
+import java.io.File
+import java.io.FilenameFilter
+import javax.servlet.ServletContext
+import javax.servlet.http.HttpServletRequest
+
+
+private const val SLOW_RELOAD = 60_000
+private const val COOKIE_NAME = "features.set"
+
+class FeatureSetsManager(
+ private val defaultManager: FeatureManager,
+ private val nameProvider: AlternativeFeatureSetNameProvider,
+ private val servletContext: ServletContext
+) : FeatureManager by defaultManager {
+
+ override fun isActive(feature: Feature?): Boolean {
+ return resolvedFeatureManager().isActive(feature)
+ }
+
+ private fun resolvedFeatureManager(): FeatureManager {
+ return when (val alternativeFeatureSetName = nameProvider.alternativeFeatureSetName) {
+ null -> defaultManager
+ else -> allFeatureManagers.getValue(alternativeFeatureSetName)
+ }
+ }
+
+ internal val allFeatureManagers: Map<String, FeatureManager> by lazy {
+ allFeatureSetFiles().associateBy(
+ { it.name },
+ { newFeatureManager(it) }
+ ).withDefault { allFeaturesOff }
+ }
+
+ private val allFeaturesOff =
+ FeatureManagerBuilder().featureEnum(Features::class.java).build()
+
+ private fun newFeatureManager(file: File): FeatureManager {
+ return FeatureManagerBuilder()
+ .featureEnum(Features::class.java)
+ .stateRepository(FileBasedStateRepository(file, SLOW_RELOAD))
+ .build()
+ }
+
+ private fun allFeatureSetFiles(): Array<File> {
+ val dir = File(servletContext.getRealPath("/WEB-INF/conf/"))
+ val fileFilter: FilenameFilter = WildcardFileFilter("*.features.properties")
+
+ return dir.listFiles(fileFilter) ?: emptyArray()
+ }
+}
+
+interface AlternativeFeatureSetNameProvider {
+ val alternativeFeatureSetName: String?
+}
+
+class AlternativeFeatureSetNameFromCookie: AlternativeFeatureSetNameProvider {
+ override val alternativeFeatureSetName: String?
+ get() = valueFromCookie(currentHttpRequest())
+
+ internal fun valueFromCookie(httpServletRequest: HttpServletRequest?): String? {
+ return httpServletRequest
+ ?.cookies
+ ?.firstOrNull { it.name == COOKIE_NAME }
+ ?.value
+ }
+
+ internal fun currentHttpRequest(): HttpServletRequest? {
+ return when (val requestAttributes = getRequestAttributes()) {
+ is ServletRequestAttributes -> requestAttributes.request
+ else -> null
+ }
+ }
+}
diff --git a/vid-app-common/src/main/java/org/onap/vid/properties/FeaturesTogglingConfiguration.java b/vid-app-common/src/main/java/org/onap/vid/properties/FeaturesTogglingConfiguration.java
index 4d4387d4e..96331b7c4 100644
--- a/vid-app-common/src/main/java/org/onap/vid/properties/FeaturesTogglingConfiguration.java
+++ b/vid-app-common/src/main/java/org/onap/vid/properties/FeaturesTogglingConfiguration.java
@@ -20,6 +20,8 @@
package org.onap.vid.properties;
+import java.io.File;
+import javax.servlet.ServletContext;
import org.apache.commons.lang3.StringUtils;
import org.springframework.context.ApplicationListener;
import org.springframework.context.annotation.Bean;
@@ -30,9 +32,6 @@ import org.togglz.core.manager.FeatureManagerBuilder;
import org.togglz.core.repository.file.FileBasedStateRepository;
import org.togglz.spring.listener.TogglzApplicationContextBinderApplicationListener;
-import javax.servlet.ServletContext;
-import java.io.File;
-
@Configuration
public class FeaturesTogglingConfiguration {
@Bean
@@ -52,11 +51,13 @@ public class FeaturesTogglingConfiguration {
filename = StringUtils.trimToNull(filename);
- return new FeatureManagerBuilder()
+ return new FeatureSetsManager(
+ new FeatureManagerBuilder()
.featureEnum(Features.class)
.stateRepository(new FileBasedStateRepository(
- new File(filename.startsWith("/")? filename : servletContext.getRealPath("/WEB-INF/conf/" + filename))
+ new File(filename.startsWith("/") ? filename : servletContext.getRealPath("/WEB-INF/conf/" + filename))
))
- .build();
+ .build(), new AlternativeFeatureSetNameFromCookie(), servletContext
+ );
}
}