/*
* Copyright 2012-2017 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.boot.cli.compiler;
import java.net.MalformedURLException;
import java.net.URI;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import groovy.grape.Grape;
import org.apache.maven.model.Model;
import org.apache.maven.model.Repository;
import org.apache.maven.model.building.DefaultModelBuilder;
import org.apache.maven.model.building.DefaultModelBuilderFactory;
import org.apache.maven.model.building.DefaultModelBuildingRequest;
import org.apache.maven.model.building.ModelSource;
import org.apache.maven.model.building.UrlModelSource;
import org.apache.maven.model.resolution.InvalidRepositoryException;
import org.apache.maven.model.resolution.ModelResolver;
import org.apache.maven.model.resolution.UnresolvableModelException;
import org.codehaus.groovy.ast.ASTNode;
import org.codehaus.groovy.ast.AnnotationNode;
import org.codehaus.groovy.ast.expr.ConstantExpression;
import org.codehaus.groovy.ast.expr.Expression;
import org.codehaus.groovy.ast.expr.ListExpression;
import org.codehaus.groovy.control.messages.Message;
import org.codehaus.groovy.control.messages.SyntaxErrorMessage;
import org.codehaus.groovy.syntax.SyntaxException;
import org.codehaus.groovy.transform.ASTTransformation;
import org.springframework.boot.cli.compiler.dependencies.MavenModelDependencyManagement;
import org.springframework.boot.cli.compiler.grape.DependencyResolutionContext;
import org.springframework.boot.groovy.DependencyManagementBom;
import org.springframework.core.Ordered;
import org.springframework.core.annotation.Order;
/**
* {@link ASTTransformation} for processing {@link DependencyManagementBom} annotations.
*
* @author Andy Wilkinson
* @since 1.3.0
*/
@Order(DependencyManagementBomTransformation.ORDER)
public class DependencyManagementBomTransformation
extends AnnotatedNodeASTTransformation {
/**
* The order of the transformation.
*/
public static final int ORDER = Ordered.HIGHEST_PRECEDENCE + 100;
private static final Set<String> DEPENDENCY_MANAGEMENT_BOM_ANNOTATION_NAMES = Collections
.unmodifiableSet(
new HashSet<>(Arrays.asList(DependencyManagementBom.class.getName(),
DependencyManagementBom.class.getSimpleName())));
private final DependencyResolutionContext resolutionContext;
public DependencyManagementBomTransformation(
DependencyResolutionContext resolutionContext) {
super(DEPENDENCY_MANAGEMENT_BOM_ANNOTATION_NAMES, true);
this.resolutionContext = resolutionContext;
}
@Override
protected void processAnnotationNodes(List<AnnotationNode> annotationNodes) {
if (!annotationNodes.isEmpty()) {
if (annotationNodes.size() > 1) {
for (AnnotationNode annotationNode : annotationNodes) {
handleDuplicateDependencyManagementBomAnnotation(annotationNode);
}
}
else {
processDependencyManagementBomAnnotation(annotationNodes.get(0));
}
}
}
private void processDependencyManagementBomAnnotation(AnnotationNode annotationNode) {
Expression valueExpression = annotationNode.getMember("value");
List<Map<String, String>> bomDependencies = createDependencyMaps(valueExpression);
updateDependencyResolutionContext(bomDependencies);
}
private List<Map<String, String>> createDependencyMaps(Expression valueExpression) {
Map<String, String> dependency = null;
List<ConstantExpression> constantExpressions = getConstantExpressions(
valueExpression);
List<Map<String, String>> dependencies = new ArrayList<>(
constantExpressions.size());
for (ConstantExpression expression : constantExpressions) {
Object value = expression.getValue();
if (value instanceof String) {
String[] components = ((String) expression.getValue()).split(":");
if (components.length == 3) {
dependency = new HashMap<>();
dependency.put("group", components[0]);
dependency.put("module", components[1]);
dependency.put("version", components[2]);
dependency.put("type", "pom");
dependencies.add(dependency);
}
else {
handleMalformedDependency(expression);
}
}
}
return dependencies;
}
private List<ConstantExpression> getConstantExpressions(Expression valueExpression) {
if (valueExpression instanceof ListExpression) {
return getConstantExpressions((ListExpression) valueExpression);
}
if (valueExpression instanceof ConstantExpression
&& ((ConstantExpression) valueExpression).getValue() instanceof String) {
return Arrays.asList((ConstantExpression) valueExpression);
}
reportError("@DependencyManagementBom requires an inline constant that is a "
+ "string or a string array", valueExpression);
return Collections.emptyList();
}
private List<ConstantExpression> getConstantExpressions(
ListExpression valueExpression) {
List<ConstantExpression> expressions = new ArrayList<>();
for (Expression expression : valueExpression.getExpressions()) {
if (expression instanceof ConstantExpression
&& ((ConstantExpression) expression).getValue() instanceof String) {
expressions.add((ConstantExpression) expression);
}
else {
reportError(
"Each entry in the array must be an " + "inline string constant",
expression);
}
}
return expressions;
}
private void handleMalformedDependency(Expression expression) {
Message message = createSyntaxErrorMessage(
String.format(
"The string must be of the form \"group:module:version\"%n"),
expression);
getSourceUnit().getErrorCollector().addErrorAndContinue(message);
}
private void updateDependencyResolutionContext(
List<Map<String, String>> bomDependencies) {
URI[] uris = Grape.getInstance().resolve(null,
bomDependencies.toArray(new Map[bomDependencies.size()]));
DefaultModelBuilder modelBuilder = new DefaultModelBuilderFactory().newInstance();
for (URI uri : uris) {
try {
DefaultModelBuildingRequest request = new DefaultModelBuildingRequest();
request.setModelResolver(new GrapeModelResolver());
request.setModelSource(new UrlModelSource(uri.toURL()));
request.setSystemProperties(System.getProperties());
Model model = modelBuilder.build(request).getEffectiveModel();
this.resolutionContext.addDependencyManagement(
new MavenModelDependencyManagement(model));
}
catch (Exception ex) {
throw new IllegalStateException("Failed to build model for '" + uri
+ "'. Is it a valid Maven bom?", ex);
}
}
}
private void handleDuplicateDependencyManagementBomAnnotation(
AnnotationNode annotationNode) {
Message message = createSyntaxErrorMessage(
"Duplicate @DependencyManagementBom annotation. It must be declared at most once.",
annotationNode);
getSourceUnit().getErrorCollector().addErrorAndContinue(message);
}
private void reportError(String message, ASTNode node) {
getSourceUnit().getErrorCollector()
.addErrorAndContinue(createSyntaxErrorMessage(message, node));
}
private Message createSyntaxErrorMessage(String message, ASTNode node) {
return new SyntaxErrorMessage(
new SyntaxException(message, node.getLineNumber(), node.getColumnNumber(),
node.getLastLineNumber(), node.getLastColumnNumber()),
getSourceUnit());
}
private static class GrapeModelResolver implements ModelResolver {
@Override
public ModelSource resolveModel(String groupId, String artifactId, String version)
throws UnresolvableModelException {
Map<String, String> dependency = new HashMap<>();
dependency.put("group", groupId);
dependency.put("module", artifactId);
dependency.put("version", version);
dependency.put("type", "pom");
try {
return new UrlModelSource(
Grape.getInstance().resolve(null, dependency)[0].toURL());
}
catch (MalformedURLException e) {
throw new UnresolvableModelException(e.getMessage(), groupId, artifactId,
version);
}
}
@Override
public void addRepository(Repository repository)
throws InvalidRepositoryException {
}
@Override
public ModelResolver newCopy() {
return this;
}
}
}