S2A utility returns S2AConfig.

Author: rmehta19

oauth2_http/java/com/google/auth/oauth2/S2A.java

@@ -58,7 +58,7 @@
  * <p>This is an experimental utility.
  */
 @ThreadSafe
-public final class S2A {
+public class S2A {
   static final String S2A_PLAINTEXT_ADDRESS_JSON_KEY = "plaintext_address";
   static final String S2A_MTLS_ADDRESS_JSON_KEY = "mtls_address";
   static final String S2A_CONFIG_ENDPOINT_POSTFIX =
@@ -81,14 +81,9 @@ public final class S2A {
     this.config = getS2AConfigFromMDS();
   }
 
-  /** @return the mTLS S2A Address from the mTLS config. */
-  public String getMtlsS2AAddress() {
-    return config.getMtlsAddress();
-  }
-
-  /** @return the plaintext S2A Address from the mTLS config. */
-  public String getPlaintextS2AAddress() {
-    return config.getPlaintextAddress();
+  /** @return the cached S2AConfig. */
+  public S2AConfig getConfigFromMDS() {
+    return config;
   }
 
   public static Builder newBuilder() {

oauth2_http/java/com/google/auth/oauth2/S2AConfig.java

@@ -33,7 +33,7 @@
 import com.google.errorprone.annotations.CanIgnoreReturnValue;
 
 /** Holds an mTLS configuration (consists of address of S2A) retrieved from the Metadata Server. */
-final class S2AConfig {
+public class S2AConfig {
   // plaintextAddress is the plaintext address to reach the S2A.
   private final String plaintextAddress;
 

oauth2_http/javatests/com/google/auth/oauth2/S2ATest.java

@@ -60,8 +60,9 @@ public void getS2AAddress_validAddress() {
     transportFactory.transport.setRequestStatusCode(HttpStatusCodes.STATUS_CODE_OK);
 
     S2A s2aUtils = S2A.newBuilder().setHttpTransportFactory(transportFactory).build();
-    String plaintextS2AAddress = s2aUtils.getPlaintextS2AAddress();
-    String mtlsS2AAddress = s2aUtils.getMtlsS2AAddress();
+    S2AConfig config = s2aUtils.getConfigFromMDS();
+    String plaintextS2AAddress = config.getPlaintextAddress();
+    String mtlsS2AAddress = config.getMtlsAddress();
     assertEquals(S2A_PLAINTEXT_ADDRESS, plaintextS2AAddress);
     assertEquals(S2A_MTLS_ADDRESS, mtlsS2AAddress);
   }
@@ -79,8 +80,9 @@ public void getS2AAddress_queryEndpointResponseErrorCode_emptyAddress() {
         HttpStatusCodes.STATUS_CODE_SERVICE_UNAVAILABLE);
 
     S2A s2aUtils = S2A.newBuilder().setHttpTransportFactory(transportFactory).build();
-    String plaintextS2AAddress = s2aUtils.getPlaintextS2AAddress();
-    String mtlsS2AAddress = s2aUtils.getMtlsS2AAddress();
+    S2AConfig config = s2aUtils.getConfigFromMDS();
+    String plaintextS2AAddress = config.getPlaintextAddress();
+    String mtlsS2AAddress = config.getMtlsAddress();
     assertTrue(plaintextS2AAddress.isEmpty());
     assertTrue(mtlsS2AAddress.isEmpty());
   }
@@ -98,8 +100,9 @@ public void getS2AAddress_queryEndpointResponseEmpty_emptyAddress() {
     transportFactory.transport.setEmptyContent(true);
 
     S2A s2aUtils = S2A.newBuilder().setHttpTransportFactory(transportFactory).build();
-    String plaintextS2AAddress = s2aUtils.getPlaintextS2AAddress();
-    String mtlsS2AAddress = s2aUtils.getMtlsS2AAddress();
+    S2AConfig config = s2aUtils.getConfigFromMDS();
+    String plaintextS2AAddress = config.getPlaintextAddress();
+    String mtlsS2AAddress = config.getMtlsAddress();
     assertTrue(plaintextS2AAddress.isEmpty());
     assertTrue(mtlsS2AAddress.isEmpty());
   }
@@ -116,8 +119,9 @@ public void getS2AAddress_queryEndpointResponseInvalidPlaintextJsonKey_plaintext
     transportFactory.transport.setRequestStatusCode(HttpStatusCodes.STATUS_CODE_OK);
 
     S2A s2aUtils = S2A.newBuilder().setHttpTransportFactory(transportFactory).build();
-    String plaintextS2AAddress = s2aUtils.getPlaintextS2AAddress();
-    String mtlsS2AAddress = s2aUtils.getMtlsS2AAddress();
+    S2AConfig config = s2aUtils.getConfigFromMDS();
+    String plaintextS2AAddress = config.getPlaintextAddress();
+    String mtlsS2AAddress = config.getMtlsAddress();
     assertTrue(plaintextS2AAddress.isEmpty());
     assertEquals(S2A_MTLS_ADDRESS, mtlsS2AAddress);
   }
@@ -134,8 +138,9 @@ public void getS2AAddress_queryEndpointResponseInvalidMtlsJsonKey_mtlsEmptyAddre
     transportFactory.transport.setRequestStatusCode(HttpStatusCodes.STATUS_CODE_OK);
 
     S2A s2aUtils = S2A.newBuilder().setHttpTransportFactory(transportFactory).build();
-    String plaintextS2AAddress = s2aUtils.getPlaintextS2AAddress();
-    String mtlsS2AAddress = s2aUtils.getMtlsS2AAddress();
+    S2AConfig config = s2aUtils.getConfigFromMDS();
+    String plaintextS2AAddress = config.getPlaintextAddress();
+    String mtlsS2AAddress = config.getMtlsAddress();
     assertEquals(S2A_PLAINTEXT_ADDRESS, plaintextS2AAddress);
     assertTrue(mtlsS2AAddress.isEmpty());
   }