Adding feature flag for identity caching feature

Pending read from it, as of know is disabled.

Author: markvdouw

android-core/src/androidTest/kotlin/com.mparticle/identity/IdentityApiStartTest.kt

@@ -63,12 +63,18 @@ class IdentityApiStartTest : BaseCleanInstallEachTest() {
     @Test
     @Throws(Exception::class)
     fun testNoInitialIdentity() {
+        val currentMpid = ran.nextLong()
+        val identities = mRandomUtils.randomUserIdentities
         startMParticle()
-        TestCase.assertEquals(mServer.Requests().identify.size, 1)
+        MParticle.getInstance()?.Internal()?.configManager?.setMpid(currentMpid, ran.nextBoolean())
+        for ((key, value) in identities) {
+            AccessUtils.setUserIdentity(value, key, currentMpid)
+        }
+        com.mparticle.internal.AccessUtils.awaitMessageHandler()
         mServer = MockServer.getNewInstance(mContext)
         startMParticle()
-        // Due to caching
-        TestCase.assertEquals(mServer.Requests().identify.size, 0)
+        TestCase.assertEquals(mServer.Requests().identify.size, 1)
+        assertIdentitiesMatch(mServer.Requests().identify[0], identities, false)
     }
 
     /**

android-core/src/main/java/com/mparticle/identity/IdentityApi.java

@@ -364,7 +364,7 @@ private void reset() {
     }
 
     private boolean shouldMakeRequest(IdentityApiRequest identityRequest, boolean acceptCachedResponse, long lastIdentityCall) {
-        if (!acceptCachedResponse) {
+        if (!acceptCachedResponse || !mConfigManager.isIdentityCachingEnabled()) {
             return true;
         }
         boolean hasTimedOut = lastIdentityCall == -1L || (lastIdentityCall + (timeoutSeconds * 1000) > System.currentTimeMillis());

android-core/src/main/java/com/mparticle/internal/ConfigManager.java

@@ -73,6 +73,7 @@ public class ConfigManager {
     static final String DATAPLAN_BLOCK_USER_IDENTITIES = "id";
     public static final String KIT_CONFIG_KEY = "kit_config";
     static final String MIGRATED_TO_KIT_SHARED_PREFS = "is_mig_kit_sp";
+    private static final String IDENTITY_CACHING_ENABLED = "identityCachingEnabled";
 
     private static final int DEVMODE_UPLOAD_INTERVAL_MILLISECONDS = 10 * 1000;
     private static final int DEFAULT_MAX_ALIAS_WINDOW_DAYS = 90;
@@ -92,6 +93,7 @@ public class ConfigManager {
     private JSONObject mProviderPersistence;
     private int mRampValue = -1;
     private int mUserBucket = -1;
+    private boolean identityCachingEnabled = false;
 
     private int mSessionTimeoutInterval = -1;
     private int mUploadInterval = -1;
@@ -421,6 +423,9 @@ private synchronized void updateCoreConfig(JSONObject responseJSON, boolean newC
             mSendOoEvents = false;
         }
 
+        //TODO Read from identityCachingEnabled feature flag
+        editor.putBoolean(IDENTITY_CACHING_ENABLED, identityCachingEnabled);
+
         if (responseJSON.has(ProviderPersistence.KEY_PERSISTENCE)) {
             setProviderPersistence(new ProviderPersistence(responseJSON, mContext));
         } else {
@@ -527,6 +532,10 @@ public long getInfluenceOpenTimeoutMillis() {
         return mInfluenceOpenTimeout;
     }
 
+    public boolean isIdentityCachingEnabled() {
+        return identityCachingEnabled;
+    }
+
     private void applyConfig() {
         if (getLogUnhandledExceptions()) {
             enableUncaughtExceptionLogging(false);

testutils/src/main/java/com/mparticle/testutils/BaseAbstractTest.java

@@ -1,5 +1,6 @@
 package com.mparticle.testutils;
 
+import static org.junit.Assert.assertTrue;
 import static org.junit.Assert.fail;
 
 import android.app.Activity;
@@ -103,6 +104,7 @@ protected void startMParticle(MParticleOptions.Builder optionsBuilder) throws In
         MParticle.start(optionsBuilder.build());
         mServer.setupHappyIdentify(mStartingMpid);
         latch.await();
+        assertTrue(called.value);
     }
 
     protected void goToBackground() {