Show error message in case of problems with getting access token (#206)

dtretyakov · chingor13 · commit e04ba4fac970 · 2018-11-12T15:39:04.000-08:00
Currently it's unclear what caused the problem with it
diff --git a/google-auth-library-java/oauth2_http/java/com/google/auth/oauth2/ServiceAccountCredentials.java b/google-auth-library-java/oauth2_http/java/com/google/auth/oauth2/ServiceAccountCredentials.java
@@ -398,7 +398,7 @@ public boolean isRequired(HttpResponse response) {
     try {
       response = request.execute();
     } catch (IOException e) {
-      throw new IOException("Error getting access token for service account: ", e);
+      throw new IOException(String.format("Error getting access token for service account: %s", e.getMessage()), e);
     }
 
     GenericData responseData = response.parseAs(GenericData.class);

Original file line number	Diff line number	Diff line change
`@@ -398,7 +398,7 @@ public boolean isRequired(HttpResponse response) {`
`398`	`398`	`try {`
`399`	`399`	`response = request.execute();`
`400`	`400`	`} catch (IOException e) {`
`401`		`- throw new IOException("Error getting access token for service account: ", e);`
	`401`	`+ throw new IOException(String.format("Error getting access token for service account: %s", e.getMessage()), e);`
`402`	`402`	`}`
`403`	`403`
`404`	`404`	`GenericData responseData = response.parseAs(GenericData.class);`