| /** |
| * 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 org.apache.rya.shell; |
| |
| import static java.util.Objects.requireNonNull; |
| |
| import org.apache.rya.shell.SharedShellState.ShellState; |
| import org.apache.rya.shell.SharedShellState.StorageType; |
| import org.springframework.beans.factory.annotation.Autowired; |
| import org.springframework.core.Ordered; |
| import org.springframework.core.annotation.Order; |
| import org.springframework.shell.plugin.support.DefaultPromptProvider; |
| import org.springframework.stereotype.Component; |
| |
| /** |
| * Customizes the Rya Shell's prompt. |
| */ |
| @Component |
| @Order(Ordered.HIGHEST_PRECEDENCE) |
| public class RyaPromptProvider extends DefaultPromptProvider { |
| |
| private final SharedShellState sharedState; |
| |
| @Autowired |
| public RyaPromptProvider(final SharedShellState sharedState) { |
| this.sharedState = requireNonNull(sharedState); |
| } |
| |
| @Override |
| public String getPrompt() { |
| final ShellState state = sharedState.getShellState(); |
| // figure out the storage name: disconnected, mongo host, or Accumulo instance. |
| String storageName = "unknown"; |
| if (state.getStorageType().isPresent()) { |
| if (state.getStorageType().get() == StorageType.ACCUMULO) { |
| storageName = state.getAccumuloDetails().get().getInstanceName(); |
| } else if (state.getStorageType().get() == StorageType.MONGO) { |
| storageName = state.getMongoDetails().get().getHostname(); |
| } else { |
| throw new java.lang.IllegalStateException("Missing or unknown storage type."); |
| } |
| } |
| switch(state.getConnectionState()) { |
| case DISCONNECTED: |
| return "rya> "; |
| case CONNECTED_TO_STORAGE: |
| return String.format("rya/%s> ", storageName); |
| case CONNECTED_TO_INSTANCE: |
| return String.format("rya/%s:%s> ", |
| storageName, |
| state.getRyaInstanceName().or("unknown")); |
| default: |
| return "rya> "; |
| } |
| } |
| } |