| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package accord.messages; |
| |
| import java.lang.reflect.Field; |
| import java.lang.reflect.Modifier; |
| import java.util.List; |
| |
| import com.google.common.collect.ImmutableList; |
| |
| import static accord.messages.MessageType.Kind.REMOTE; |
| import static accord.messages.MessageType.Kind.LOCAL; |
| |
| /** |
| * Meant to assist implementations with mapping accord messages to their own messaging systems. |
| */ |
| public class MessageType |
| { |
| public static final MessageType SIMPLE_RSP = remote("SIMPLE_RSP", false); |
| public static final MessageType FAILURE_RSP = remote("FAILURE_RSP", false); |
| public static final MessageType PRE_ACCEPT_REQ = remote("PRE_ACCEPT_REQ", true ); |
| public static final MessageType PRE_ACCEPT_RSP = remote("PRE_ACCEPT_RSP", false); |
| public static final MessageType ACCEPT_REQ = remote("ACCEPT_REQ", true ); |
| public static final MessageType ACCEPT_RSP = remote("ACCEPT_RSP", false); |
| public static final MessageType ACCEPT_INVALIDATE_REQ = remote("ACCEPT_INVALIDATE_REQ", true ); |
| public static final MessageType GET_DEPS_REQ = remote("GET_DEPS_REQ", false); |
| public static final MessageType GET_DEPS_RSP = remote("GET_DEPS_RSP", false); |
| public static final MessageType GET_EPHEMERAL_READ_DEPS_REQ = remote("GET_EPHEMERAL_READ_DEPS_REQ", false); |
| public static final MessageType GET_EPHEMERAL_READ_DEPS_RSP = remote("GET_EPHEMERAL_READ_DEPS_RSP", false); |
| public static final MessageType GET_MAX_CONFLICT_REQ = remote("GET_MAX_CONFLICT_REQ", false); |
| public static final MessageType GET_MAX_CONFLICT_RSP = remote("GET_MAX_CONFLICT_RSP", false); |
| public static final MessageType COMMIT_SLOW_PATH_REQ = remote("COMMIT_SLOW_PATH_REQ", true); |
| public static final MessageType COMMIT_MAXIMAL_REQ = remote("COMMIT_MAXIMAL_REQ", true ); |
| public static final MessageType STABLE_FAST_PATH_REQ = remote("STABLE_FAST_PATH_REQ", true); |
| public static final MessageType STABLE_SLOW_PATH_REQ = remote("STABLE_SLOW_PATH_REQ", true); |
| public static final MessageType STABLE_MAXIMAL_REQ = remote("STABLE_MAXIMAL_REQ", true ); |
| public static final MessageType COMMIT_INVALIDATE_REQ = remote("COMMIT_INVALIDATE_REQ", true ); |
| public static final MessageType APPLY_MINIMAL_REQ = remote("APPLY_MINIMAL_REQ", true ); |
| public static final MessageType APPLY_MAXIMAL_REQ = remote("APPLY_MAXIMAL_REQ", true ); |
| public static final MessageType APPLY_RSP = remote("APPLY_RSP", false); |
| public static final MessageType READ_REQ = remote("READ_REQ", false); |
| public static final MessageType READ_EPHEMERAL_REQ = remote("READ_EPHEMERAL_REQ", false); |
| public static final MessageType READ_RSP = remote("READ_RSP", false); |
| public static final MessageType BEGIN_RECOVER_REQ = remote("BEGIN_RECOVER_REQ", true ); |
| public static final MessageType BEGIN_RECOVER_RSP = remote("BEGIN_RECOVER_RSP", false); |
| public static final MessageType BEGIN_INVALIDATE_REQ = remote("BEGIN_INVALIDATE_REQ", true ); |
| public static final MessageType BEGIN_INVALIDATE_RSP = remote("BEGIN_INVALIDATE_RSP", false); |
| public static final MessageType WAIT_ON_COMMIT_REQ = remote("WAIT_ON_COMMIT_REQ", false); |
| public static final MessageType WAIT_ON_COMMIT_RSP = remote("WAIT_ON_COMMIT_RSP", false); |
| public static final MessageType WAIT_UNTIL_APPLIED_REQ = remote("WAIT_UNTIL_APPLIED_REQ", false); |
| public static final MessageType INFORM_OF_TXN_REQ = remote("INFORM_OF_TXN_REQ", true ); |
| public static final MessageType INFORM_DURABLE_REQ = remote("INFORM_DURABLE_REQ", true ); |
| public static final MessageType INFORM_HOME_DURABLE_REQ = remote("INFORM_HOME_DURABLE_REQ", true ); |
| public static final MessageType CHECK_STATUS_REQ = remote("CHECK_STATUS_REQ", false); |
| public static final MessageType CHECK_STATUS_RSP = remote("CHECK_STATUS_RSP", false); |
| public static final MessageType FETCH_DATA_REQ = remote("FETCH_DATA_REQ", false); |
| public static final MessageType FETCH_DATA_RSP = remote("FETCH_DATA_RSP", false); |
| public static final MessageType SET_SHARD_DURABLE_REQ = remote("SET_SHARD_DURABLE_REQ", true ); |
| public static final MessageType SET_GLOBALLY_DURABLE_REQ = remote("SET_GLOBALLY_DURABLE_REQ", true ); |
| public static final MessageType QUERY_DURABLE_BEFORE_REQ = remote("QUERY_DURABLE_BEFORE_REQ", false); |
| public static final MessageType QUERY_DURABLE_BEFORE_RSP = remote("QUERY_DURABLE_BEFORE_RSP", false); |
| public static final MessageType APPLY_THEN_WAIT_UNTIL_APPLIED_REQ = remote("APPLY_THEN_WAIT_UNTIL_APPLIED_REQ", true ); |
| |
| public static final MessageType PROPAGATE_PRE_ACCEPT_MSG = local("PROPAGATE_PRE_ACCEPT_MSG", true); |
| public static final MessageType PROPAGATE_STABLE_MSG = local("PROPAGATE_STABLE_MSG", true); |
| public static final MessageType PROPAGATE_APPLY_MSG = local("PROPAGATE_APPLY_MSG", true); |
| public static final MessageType PROPAGATE_OTHER_MSG = local("PROPAGATE_OTHER_MSG", true); |
| |
| |
| /** |
| * LOCAL messages are not sent to remote nodes. |
| */ |
| public enum Kind { LOCAL, REMOTE } |
| |
| public static final List<MessageType> values; |
| |
| static |
| { |
| ImmutableList.Builder<MessageType> builder = ImmutableList.builder(); |
| for (Field f : MessageType.class.getDeclaredFields()) |
| { |
| if (f.getType().equals(MessageType.class) && Modifier.isStatic(f.getModifiers())) |
| { |
| try |
| { |
| builder.add((MessageType) f.get(null)); |
| } |
| catch (IllegalAccessException e) |
| { |
| throw new RuntimeException(e); |
| } |
| } |
| } |
| values = builder.build(); |
| } |
| |
| protected static MessageType local(String name, boolean hasSideEffects) |
| { |
| return new MessageType(name, LOCAL, hasSideEffects); |
| } |
| |
| protected static MessageType remote(String name, boolean hasSideEffects) |
| { |
| return new MessageType(name, REMOTE, hasSideEffects); |
| } |
| |
| private final String name; |
| private final Kind kind; |
| |
| /** |
| * If true, indicates that processing of the message has important side effects. |
| */ |
| private final boolean hasSideEffects; |
| |
| protected MessageType(String name, Kind kind, boolean hasSideEffects) |
| { |
| this.name = name; |
| this.kind = kind; |
| this.hasSideEffects = hasSideEffects; |
| } |
| |
| public String name() |
| { |
| return name; |
| } |
| |
| @Override |
| public String toString() |
| { |
| return name(); |
| } |
| |
| public boolean isLocal() |
| { |
| return kind == LOCAL; |
| } |
| |
| public boolean isRemote() |
| { |
| return kind == REMOTE; |
| } |
| |
| public boolean hasSideEffects() |
| { |
| return hasSideEffects; |
| } |
| } |
