Updating getAuthToken to return creation timestamp

firebase-installations-interop/api.txt

@@ -5,6 +5,7 @@ package com.google.firebase.installations {
     ctor public InstallationTokenResult();
     method @NonNull public static com.google.firebase.installations.InstallationTokenResult.Builder builder();
     method @NonNull public abstract String getToken();
+    method @NonNull public abstract long getTokenCreationTimestampInSecs();
     method @NonNull public abstract long getTokenExpirationInSecs();
     method @NonNull public abstract com.google.firebase.installations.InstallationTokenResult.Builder toBuilder();
   }
@@ -13,6 +14,7 @@ package com.google.firebase.installations {
     ctor public InstallationTokenResult.Builder();
     method @NonNull public abstract com.google.firebase.installations.InstallationTokenResult build();
     method @NonNull public abstract com.google.firebase.installations.InstallationTokenResult.Builder setToken(@NonNull String);
+    method @NonNull public abstract com.google.firebase.installations.InstallationTokenResult.Builder setTokenCreationTimestampInSecs(long);
     method @NonNull public abstract com.google.firebase.installations.InstallationTokenResult.Builder setTokenExpirationInSecs(long);
   }
 

firebase-installations-interop/src/main/java/com/google/firebase/installations/InstallationTokenResult.java

@@ -30,6 +30,12 @@ public abstract class InstallationTokenResult {
   @NonNull
   public abstract long getTokenExpirationInSecs();
 
+  /**
+   * The amount of time, in seconds, when the auth-token was created for this Firebase Installation.
+   */
+  @NonNull
+  public abstract long getTokenCreationTimestampInSecs();
+
   @NonNull
   public abstract Builder toBuilder();
 
@@ -47,6 +53,9 @@ public abstract static class Builder {
     @NonNull
     public abstract Builder setTokenExpirationInSecs(long value);
 
+    @NonNull
+    public abstract Builder setTokenCreationTimestampInSecs(long value);
+
     @NonNull
     public abstract InstallationTokenResult build();
   }

firebase-installations/src/androidTest/java/com/google/firebase/installations/FirebaseInstallationsInstrumentedTest.java

@@ -528,6 +528,7 @@ public void testGetAuthToken_multipleCallsForceRefresh_fetchedNewTokenTwice() th
                     InstallationTokenResult.builder()
                         .setToken(TEST_AUTH_TOKEN_3)
                         .setTokenExpirationInSecs(TEST_TOKEN_EXPIRATION_TIMESTAMP)
+                        .setTokenCreationTimestampInSecs(TEST_CREATION_TIMESTAMP_1)
                         .build()))
         .doAnswer(
             AdditionalAnswers.answersWithDelay(
@@ -536,6 +537,7 @@ public void testGetAuthToken_multipleCallsForceRefresh_fetchedNewTokenTwice() th
                     InstallationTokenResult.builder()
                         .setToken(TEST_AUTH_TOKEN_4)
                         .setTokenExpirationInSecs(TEST_TOKEN_EXPIRATION_TIMESTAMP)
+                        .setTokenCreationTimestampInSecs(TEST_CREATION_TIMESTAMP_1)
                         .build()))
         .when(backendClientReturnsOk)
         .generateAuthToken(anyString(), anyString(), anyString(), anyString());

firebase-installations/src/androidTest/java/com/google/firebase/installations/FisAndroidTestConstants.java

@@ -50,12 +50,14 @@ public final class FisAndroidTestConstants {
               InstallationTokenResult.builder()
                   .setToken(TEST_AUTH_TOKEN)
                   .setTokenExpirationInSecs(TEST_TOKEN_EXPIRATION_TIMESTAMP)
+                  .setTokenCreationTimestampInSecs(TEST_CREATION_TIMESTAMP_1)
                   .build())
           .build();
 
   public static final InstallationTokenResult TEST_INSTALLATION_TOKEN_RESULT =
       InstallationTokenResult.builder()
           .setToken(TEST_AUTH_TOKEN_2)
           .setTokenExpirationInSecs(TEST_TOKEN_EXPIRATION_TIMESTAMP)
+          .setTokenCreationTimestampInSecs(TEST_CREATION_TIMESTAMP_1)
           .build();
 }

firebase-installations/src/main/java/com/google/firebase/installations/GetAuthTokenListener.java

@@ -35,6 +35,7 @@ public boolean onStateReached(PersistedFidEntry persistedFidEntry) {
           InstallationTokenResult.builder()
               .setToken(persistedFidEntry.getAuthToken())
               .setTokenExpirationInSecs(persistedFidEntry.getExpiresInSecs())
+              .setTokenCreationTimestampInSecs(persistedFidEntry.getTokenCreationEpochInSecs())
               .build());
       return true;
     }