PostReview: Remove support for 'strictLabels' option

Currently we support strict/non-strict label in PostReview,
which is controlled by the 'strictLabels' option.

For strict labels, we require all labels to be within the
user's granted range. Attempting to vote a label value not
granted will fail the entire operation. For non-strict labels,
we squashes the proposed value to the nearest granted value
and the operation will be executed.

This change removes the support for non-strict labels.

Change-Id: Icb9dfafea567e1e9c469811e830e3519b865700f

Documentation/cmd-review.txt

@@ -120,15 +120,10 @@ branch.
 	Votes that are not permitted for the user are silently ignored.
 
 --label::
-	Set a label by name to the value 'N'.  Invalid votes (invalid label
-	or invalid value) and votes that are not permitted for the user are
-	silently ignored.
-
---strict-labels::
-	Require ability to vote on all specified labels before reviewing change.
-	If the vote is invalid (invalid label or invalid name), the vote is not
-	permitted for the user, or the vote is on an outdated or closed patch set,
-	return an error instead of silently discarding the vote.
+	Set a label by name to the value 'N'. The ability to vote on all specified
+	labels is required. If the vote is invalid (invalid label or invalid name),
+	the vote is not permitted for the user, or the vote is on an outdated or
+	closed patch set, return an error instead of silently discarding the vote.
 
 --tag::
 -t::

Documentation/rest-api-changes.txt

@@ -6695,13 +6695,6 @@ list of link:#comment-input[CommentInput] entities.
 |`robot_comments`         |optional|
 The robot comments that should be added as a map that maps a file path
 to a list of link:#robot-comment-input[RobotCommentInput] entities.
-|`strict_labels`          |`true` if not set|
-Whether all labels are required to be within the user's permitted ranges
-based on access controls. +
-If `true`, attempting to use a label not granted to the user will fail
-the entire modify operation early. +
-If `false`, the operation will execute anyway, but the proposed labels
-will be modified to be the "best" value allowed by the access controls.
 |`drafts`                 |optional|
 Draft handling that defines how draft comments are handled that are
 already in the database but that were not also described in this

gerrit-acceptance-tests/src/test/java/com/google/gerrit/acceptance/api/change/ChangeIT.java

@@ -1582,7 +1582,6 @@ public class ChangeIT extends AbstractDaemonTest {
     // Exact request format made by GWT UI at ddc6b7160fe416fed9e7e3180489d44c82fd64f8.
     ReviewInput in = new ReviewInput();
     in.labels = ImmutableMap.of("Code-Review", (short) 0);
-    in.strictLabels = true;
     in.drafts = DraftHandling.PUBLISH_ALL_REVISIONS;
     in.message = "comment";
     gApi.changes().id(r.getChangeId()).revision(r.getCommit().name()).review(in);

gerrit-acceptance-tests/src/test/java/com/google/gerrit/acceptance/rest/account/ImpersonationIT.java

@@ -146,7 +146,6 @@ public class ImpersonationIT extends AbstractDaemonTest {
 
     ReviewInput in = new ReviewInput();
     in.onBehalfOf = user.id.toString();
-    in.strictLabels = true;
     in.label("Not-A-Label", 5);
 
     exception.expect(BadRequestException.class);
@@ -154,23 +153,6 @@ public class ImpersonationIT extends AbstractDaemonTest {
     revision.review(in);
   }
 
-  @Test
-  public void voteOnBehalfOfInvalidLabelIgnoredWithoutStrictLabels() throws Exception {
-    allowCodeReviewOnBehalfOf();
-    PushOneCommit.Result r = createChange();
-    RevisionApi revision = gApi.changes().id(r.getChangeId()).current();
-
-    ReviewInput in = new ReviewInput();
-    in.onBehalfOf = user.id.toString();
-    in.strictLabels = false;
-    in.label("Code-Review", 1);
-    in.label("Not-A-Label", 5);
-
-    revision.review(in);
-
-    assertThat(gApi.changes().id(r.getChangeId()).get().labels).doesNotContainKey("Not-A-Label");
-  }
-
   @Test
   public void voteOnBehalfOfLabelNotPermitted() throws Exception {
     ProjectConfig cfg = projectCache.checkedGet(project).getConfig();

gerrit-gwtui/src/main/java/com/google/gerrit/client/changes/ReviewInput.java

@@ -60,7 +60,6 @@ public class ReviewInput extends JavaScriptObject {
 
   private native void init() /*-{
     this.labels = {};
-    this.strict_labels = true;
   }-*/;
 
   public final native void prePost() /*-{

gerrit-server/src/main/java/com/google/gerrit/server/change/PostReview.java

@@ -233,7 +233,7 @@ public class PostReview
       input.drafts = DraftHandling.DELETE;
     }
     if (input.labels != null) {
-      checkLabels(revision, labelTypes, input.strictLabels, input.labels);
+      checkLabels(revision, labelTypes, input.labels);
     }
     if (input.comments != null) {
       cleanUpComments(input.comments);
@@ -443,12 +443,9 @@ public class PostReview
     while (itr.hasNext()) {
       Map.Entry<String, Short> ent = itr.next();
       LabelType type = labelTypes.byLabel(ent.getKey());
-      if (type == null && in.strictLabels) {
+      if (type == null) {
         throw new BadRequestException(
             String.format("label \"%s\" is not a configured label", ent.getKey()));
-      } else if (type == null) {
-        itr.remove();
-        continue;
       }
 
       if (!caller.isInternalUser()) {
@@ -479,8 +476,7 @@ public class PostReview
         changeResourceFactory.create(rev.getNotes(), reviewer), rev.getPatchSet());
   }
 
-  private void checkLabels(
-      RevisionResource rsrc, LabelTypes labelTypes, boolean strict, Map<String, Short> labels)
+  private void checkLabels(RevisionResource rsrc, LabelTypes labelTypes, Map<String, Short> labels)
       throws BadRequestException, AuthException, PermissionBackendException {
     PermissionBackend.ForChange perm = rsrc.permissions();
     Iterator<Map.Entry<String, Short>> itr = labels.entrySet().iterator();
@@ -488,12 +484,8 @@ public class PostReview
       Map.Entry<String, Short> ent = itr.next();
       LabelType lt = labelTypes.byLabel(ent.getKey());
       if (lt == null) {
-        if (strict) {
-          throw new BadRequestException(
-              String.format("label \"%s\" is not a configured label", ent.getKey()));
-        }
-        itr.remove();
-        continue;
+        throw new BadRequestException(
+            String.format("label \"%s\" is not a configured label", ent.getKey()));
       }
 
       if (ent.getValue() == null || ent.getValue() == 0) {
@@ -503,23 +495,16 @@ public class PostReview
       }
 
       if (lt.getValue(ent.getValue()) == null) {
-        if (strict) {
-          throw new BadRequestException(
-              String.format("label \"%s\": %d is not a valid value", ent.getKey(), ent.getValue()));
-        }
-        itr.remove();
-        continue;
+        throw new BadRequestException(
+            String.format("label \"%s\": %d is not a valid value", ent.getKey(), ent.getValue()));
       }
 
       short val = ent.getValue();
       try {
         perm.check(new LabelPermission.WithValue(lt, val));
       } catch (AuthException e) {
-        if (strict) {
-          throw new AuthException(
-              String.format("Applying label \"%s\": %d is restricted", lt.getName(), val));
-        }
-        ent.setValue(perm.squashThenCheck(lt, val));
+        throw new AuthException(
+            String.format("Applying label \"%s\": %d is restricted", lt.getName(), val));
       }
     }
   }

gerrit-server/src/main/java/com/google/gerrit/server/query/change/EqualsLabelPredicate.java

@@ -79,7 +79,7 @@ public class EqualsLabelPredicate extends ChangeIndexPredicate {
     for (PatchSetApproval p : object.currentApprovals()) {
       if (labelType.matches(p)) {
         hasVote = true;
-        if (match(object, p.getValue(), p.getAccountId(), labelType)) {
+        if (match(object, p.getValue(), p.getAccountId())) {
           return true;
         }
       }
@@ -105,7 +105,7 @@ public class EqualsLabelPredicate extends ChangeIndexPredicate {
     return null;
   }
 
-  protected boolean match(ChangeData cd, short value, Account.Id approver, LabelType type) {
+  protected boolean match(ChangeData cd, short value, Account.Id approver) {
     if (value != expVal) {
       return false;
     }
@@ -119,11 +119,11 @@ public class EqualsLabelPredicate extends ChangeIndexPredicate {
       return false;
     }
 
-    // Double check the value is still permitted for the user.
+    // Check the user has 'READ' permission.
     try {
       PermissionBackend.ForChange perm =
           permissionBackend.user(reviewer).database(dbProvider).change(cd);
-      return perm.test(ChangePermission.READ) && expVal == perm.squashByTest(type, value);
+      return perm.test(ChangePermission.READ);
     } catch (PermissionBackendException e) {
       return false;
     }

gerrit-sshd/src/main/java/com/google/gerrit/sshd/commands/ReviewCommand.java

@@ -134,12 +134,6 @@ public class ReviewCommand extends SshCommand {
   @Option(name = "--json", aliases = "-j", usage = "read review input json from stdin")
   private boolean json;
 
-  @Option(
-    name = "--strict-labels",
-    usage = "Strictly check if the labels specified can be applied to the given patch set(s)"
-  )
-  private boolean strictLabels;
-
   @Option(
     name = "--tag",
     aliases = "-t",
@@ -279,7 +273,6 @@ public class ReviewCommand extends SshCommand {
     review.notify = notify;
     review.labels = new TreeMap<>();
     review.drafts = ReviewInput.DraftHandling.PUBLISH;
-    review.strictLabels = strictLabels;
     for (ApproveOption ao : optionList) {
       Short v = ao.value();
       if (v != null) {