/* * Copyright 2015-2016 the original author or authors. * * Licensed 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.springframework.cloud.dataflow.completion; import java.util.List; import org.springframework.cloud.dataflow.core.dsl.CheckPointedParseException; import org.springframework.cloud.dataflow.registry.AppRegistration; import org.springframework.cloud.dataflow.registry.AppRegistry; import static org.springframework.cloud.dataflow.core.ApplicationType.processor; import static org.springframework.cloud.dataflow.core.ApplicationType.sink; /** * Proposes app names when the user has typed a destination redirection. * * @author Eric Bottard * @author Mark Fisher */ class DestinationNameYieldsAppsRecoveryStrategy extends StacktraceFingerprintingRecoveryStrategy<CheckPointedParseException> { private final AppRegistry appRegistry; public DestinationNameYieldsAppsRecoveryStrategy(AppRegistry appRegistry) { super(CheckPointedParseException.class, ":foo >", ":foo > "); this.appRegistry = appRegistry; } @Override public boolean shouldTrigger(String dslStart, Exception exception) { if (!super.shouldTrigger(dslStart, exception)) { return false; } // Cast is safe from call to super. // Backtracking would return even before the destination return ((CheckPointedParseException) exception).getExpressionStringUntilCheckpoint().trim().isEmpty(); } @Override public void addProposals(String dsl, CheckPointedParseException exception, int detailLevel, List<CompletionProposal> proposals) { CompletionProposal.Factory completionFactory = CompletionProposal.expanding(dsl); for (AppRegistration appRegistration : appRegistry.findAll()) { if (appRegistration.getType() == processor || appRegistration.getType() == sink) { proposals.add(completionFactory.withSeparateTokens(appRegistration.getName(), "Wire destination into a " + appRegistration.getType() + " app")); } } } }