Migrate to use yangtools' ByteBufUtils
[bgpcep.git] / pcep / ietf-stateful07 / src / main / java / org / opendaylight / protocol / pcep / ietf / stateful07 / Stateful07ErrorMessageParser.java
index 0ce108f0e541ceebebd9ce4288cbc060c8331621..187b7a7b0f77debbcdd4c8c5ad6c71930d30dede 100644 (file)
@@ -7,45 +7,43 @@
  */
 package org.opendaylight.protocol.pcep.ietf.stateful07;
 
-import com.google.common.base.Optional;
-import com.google.common.base.Preconditions;
+import static com.google.common.base.Preconditions.checkArgument;
+
 import io.netty.buffer.ByteBuf;
-import io.netty.buffer.Unpooled;
 import java.util.ArrayList;
 import java.util.List;
-import org.opendaylight.protocol.pcep.impl.message.PCEPErrorMessageParser;
-import org.opendaylight.protocol.pcep.spi.MessageUtil;
+import java.util.Optional;
+import org.opendaylight.protocol.pcep.parser.message.PCEPErrorMessageParser;
 import org.opendaylight.protocol.pcep.spi.ObjectRegistry;
 import org.opendaylight.protocol.pcep.spi.PCEPDeserializerException;
 import org.opendaylight.protocol.pcep.spi.PCEPErrors;
 import org.opendaylight.protocol.pcep.spi.UnknownObject;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.pcerr.pcerr.message.error.type.StatefulCase;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.pcerr.pcerr.message.error.type.StatefulCaseBuilder;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.pcerr.pcerr.message.error.type.stateful._case.StatefulBuilder;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.pcerr.pcerr.message.error.type.stateful._case.stateful.Srps;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.pcerr.pcerr.message.error.type.stateful._case.stateful.SrpsBuilder;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.srp.object.Srp;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.message.rev131007.PcerrBuilder;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.Message;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.Object;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.PcerrMessage;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.open.object.Open;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.pcep.error.object.ErrorObject;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.pcerr.message.PcerrMessageBuilder;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.pcerr.message.pcerr.message.Errors;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.pcerr.message.pcerr.message.ErrorsBuilder;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.pcerr.message.pcerr.message.error.type.RequestCase;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.pcerr.message.pcerr.message.error.type.RequestCaseBuilder;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.pcerr.message.pcerr.message.error.type.SessionCase;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.pcerr.message.pcerr.message.error.type.SessionCaseBuilder;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.pcerr.message.pcerr.message.error.type.request._case.RequestBuilder;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.pcerr.message.pcerr.message.error.type.request._case.request.Rps;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.pcerr.message.pcerr.message.error.type.request._case.request.RpsBuilder;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.pcerr.message.pcerr.message.error.type.session._case.SessionBuilder;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.rp.object.Rp;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev181109.pcerr.pcerr.message.error.type.StatefulCase;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev181109.pcerr.pcerr.message.error.type.StatefulCaseBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev181109.pcerr.pcerr.message.error.type.stateful._case.StatefulBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev181109.pcerr.pcerr.message.error.type.stateful._case.stateful.Srps;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev181109.pcerr.pcerr.message.error.type.stateful._case.stateful.SrpsBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev181109.srp.object.Srp;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.message.rev181109.PcerrBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.Message;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.Object;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.PcerrMessage;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.open.object.Open;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.pcep.error.object.ErrorObject;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.pcerr.message.PcerrMessageBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.pcerr.message.pcerr.message.Errors;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.pcerr.message.pcerr.message.ErrorsBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.pcerr.message.pcerr.message.error.type.RequestCase;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.pcerr.message.pcerr.message.error.type.RequestCaseBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.pcerr.message.pcerr.message.error.type.SessionCaseBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.pcerr.message.pcerr.message.error.type.request._case.RequestBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.pcerr.message.pcerr.message.error.type.request._case.request.Rps;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.pcerr.message.pcerr.message.error.type.request._case.request.RpsBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.pcerr.message.pcerr.message.error.type.session._case.SessionBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.rp.object.Rp;
 
 /**
- * Parser for {@link PcerrMessage}
+ * Parser for {@link PcerrMessage}.
  */
 public final class Stateful07ErrorMessageParser extends PCEPErrorMessageParser {
 
@@ -54,15 +52,8 @@ public final class Stateful07ErrorMessageParser extends PCEPErrorMessageParser {
     }
 
     @Override
-    public void serializeMessage(final Message message, final ByteBuf out) {
-        Preconditions.checkArgument(message instanceof PcerrMessage, "Wrong instance of Message. Passed instance of %s. Need ErrorMessage.", message.getClass());
-        final org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.pcerr.message.PcerrMessage err = ((PcerrMessage) message).getPcerrMessage();
-
-        if (err.getErrors() == null || err.getErrors().isEmpty()) {
-            throw new IllegalArgumentException("Errors should not be empty.");
-        }
-        final ByteBuf buffer = Unpooled.buffer();
-
+    protected void serializeCases(final org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types
+            .rev181109.pcerr.message.PcerrMessage err, final ByteBuf buffer) {
         if (err.getErrorType() instanceof RequestCase) {
             final List<Rps> rps = ((RequestCase) err.getErrorType()).getRequest().getRps();
             for (final Rps r : rps) {
@@ -75,131 +66,115 @@ public final class Stateful07ErrorMessageParser extends PCEPErrorMessageParser {
                 serializeObject(s.getSrp(), buffer);
             }
         }
-        for (final Errors e : err.getErrors()) {
-            serializeObject(e.getErrorObject(), buffer);
-        }
-        if (err.getErrorType() instanceof SessionCase) {
-            serializeObject(((SessionCase) err.getErrorType()).getSession().getOpen(), buffer);
-        }
-        MessageUtil.formatMessage(TYPE, buffer, out);
     }
 
     @Override
-    protected PcerrMessage validate(final List<Object> objects, final List<Message> errors) throws PCEPDeserializerException {
-        if (objects == null) {
-            throw new IllegalArgumentException("Passed list can't be null.");
-        }
+    protected PcerrMessage validate(final List<Object> objects, final List<Message> errors)
+            throws PCEPDeserializerException {
+        checkArgument(objects != null, "Passed list can't be null.");
         if (objects.isEmpty()) {
             throw new PCEPDeserializerException("Error message is empty.");
         }
-
         final List<Rps> requestParameters = new ArrayList<>();
         final List<Srps> srps = new ArrayList<>();
         final List<Errors> errorObjects = new ArrayList<>();
         final PcerrMessageBuilder b = new PcerrMessageBuilder();
-
-        Object obj;
-        State state = State.Init;
-        obj = objects.get(0);
-
+        Object obj = objects.get(0);
+        State state = State.INIT;
         if (obj instanceof ErrorObject) {
             final ErrorObject o = (ErrorObject) obj;
             errorObjects.add(new ErrorsBuilder().setErrorObject(o).build());
-            state = State.ErrorIn;
-            objects.remove(0);
+            state = State.ERROR_IN;
         } else if (obj instanceof Rp) {
             final Rp o = (Rp) obj;
             if (o.isProcessingRule()) {
-                errors.add(createErrorMsg(PCEPErrors.P_FLAG_NOT_SET, Optional.<Rp>absent()));
+                errors.add(createErrorMsg(PCEPErrors.P_FLAG_NOT_SET, Optional.empty()));
                 return null;
             }
             requestParameters.add(new RpsBuilder().setRp(o).build());
-            state = State.RpIn;
-            objects.remove(0);
+            state = State.RP_IN;
         } else if (obj instanceof Srp) {
             final Srp s = (Srp) obj;
             srps.add(new SrpsBuilder().setSrp(s).build());
-            state = State.SrpIn;
+            state = State.SRP_IN;
+        }
+        if (!state.equals(State.INIT)) {
             objects.remove(0);
         }
-
-        while (!objects.isEmpty()) {
+        while (!objects.isEmpty() && !state.equals(State.END)) {
             obj = objects.get(0);
-
             if (obj instanceof UnknownObject) {
-                return new PcerrBuilder().setPcerrMessage(b.setErrors(((UnknownObject) obj).getErrors()).build()).build();
+                return new PcerrBuilder().setPcerrMessage(b.setErrors(((UnknownObject) obj).getErrors()).build())
+                        .build();
+            }
+            state = insertObject(state, obj, errorObjects, requestParameters, srps, b);
+            if (!state.equals(State.END)) {
+                objects.remove(0);
             }
+        }
+        if (errorObjects.isEmpty()) {
+            throw new PCEPDeserializerException("At least one PCEPErrorObject is mandatory.");
+        }
+        if (!objects.isEmpty()) {
+            throw new PCEPDeserializerException("Unprocessed Objects: " + objects);
+        }
+        if (!requestParameters.isEmpty()) {
+            b.setErrorType(new RequestCaseBuilder().setRequest(new RequestBuilder().setRps(requestParameters).build())
+                .build());
+        }
+        if (!srps.isEmpty()) {
+            b.setErrorType(new StatefulCaseBuilder().setStateful(new StatefulBuilder().setSrps(srps).build()).build());
+        }
+        return new PcerrBuilder().setPcerrMessage(b.setErrors(errorObjects).build()).build();
+    }
 
-            switch (state) {
-            case ErrorIn:
-                state = State.Open;
+    private static State insertObject(final State state, final Object obj, final List<Errors> errorObjects,
+            final List<Rps> requestParameters, final List<Srps> srps, final PcerrMessageBuilder builder) {
+        switch (state) {
+            case ERROR_IN:
                 if (obj instanceof ErrorObject) {
                     final ErrorObject o = (ErrorObject) obj;
                     errorObjects.add(new ErrorsBuilder().setErrorObject(o).build());
-                    state = State.ErrorIn;
-                    break;
+                    return State.ERROR_IN;
                 }
-            case RpIn:
-                state = State.Error;
+                // fall through
+            case RP_IN:
                 if (obj instanceof Rp) {
-                    final Rp o = ((Rp) obj);
+                    final Rp o = (Rp) obj;
                     requestParameters.add(new RpsBuilder().setRp(o).build());
-                    state = State.RpIn;
-                    break;
+                    return State.RP_IN;
                 }
-            case SrpIn:
-                state = State.Error;
+                // fall through
+            case SRP_IN:
                 if (obj instanceof Srp) {
-                    final Srp o = ((Srp) obj);
+                    final Srp o = (Srp) obj;
                     srps.add(new SrpsBuilder().setSrp(o).build());
-                    state = State.SrpIn;
-                    break;
+                    return State.SRP_IN;
                 }
-            case Open:
-                state = State.OpenIn;
+                // fall through
+            case OPEN:
                 if (obj instanceof Open) {
-                    b.setErrorType(new SessionCaseBuilder().setSession(new SessionBuilder().setOpen((Open) obj).build()).build());
-                    break;
+                    builder.setErrorType(
+                        new SessionCaseBuilder().setSession(new SessionBuilder().setOpen((Open) obj).build()).build());
+                    return State.OPEN_IN;
                 }
-            case Error:
-                state = State.OpenIn;
+                // fall through
+            case ERROR:
                 if (obj instanceof ErrorObject) {
                     final ErrorObject o = (ErrorObject) obj;
                     errorObjects.add(new ErrorsBuilder().setErrorObject(o).build());
-                    state = State.Error;
-                    break;
+                    return State.ERROR;
                 }
-            case OpenIn:
-                state = State.End;
-                break;
-            case End:
-                break;
+                // fall through
+            case OPEN_IN:
+            case END:
+                return State.END;
             default:
-                break;
-            }
-            if (!state.equals(State.End)) {
-                objects.remove(0);
-            }
-        }
-
-        if (errorObjects.isEmpty()) {
-            throw new PCEPDeserializerException("At least one PCEPErrorObject is mandatory.");
-        }
-
-        if (!objects.isEmpty()) {
-            throw new PCEPDeserializerException("Unprocessed Objects: " + objects);
-        }
-        if (!requestParameters.isEmpty()) {
-            b.setErrorType(new RequestCaseBuilder().setRequest(new RequestBuilder().setRps(requestParameters).build()).build());
-        }
-        if (!srps.isEmpty()) {
-            b.setErrorType(new StatefulCaseBuilder().setStateful(new StatefulBuilder().setSrps(srps).build()).build());
+                return state;
         }
-
-        return new PcerrBuilder().setPcerrMessage(b.setErrors(errorObjects).build()).build();
     }
 
     private enum State {
-        Init, ErrorIn, RpIn, SrpIn, Open, Error, OpenIn, End
+        INIT, ERROR_IN, RP_IN, SRP_IN, OPEN, ERROR, OPEN_IN, END
     }
 }