/*
* 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"));
}
}
}
}