/
DefaultToolchainsBuilder.java
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/
DefaultToolchainsBuilder.java
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/*
* 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.maven.internal.impl;
import javax.xml.stream.Location;
import javax.xml.stream.XMLStreamException;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
import org.apache.maven.api.di.Named;
import org.apache.maven.api.services.BuilderProblem;
import org.apache.maven.api.services.Source;
import org.apache.maven.api.services.ToolchainsBuilder;
import org.apache.maven.api.services.ToolchainsBuilderException;
import org.apache.maven.api.services.ToolchainsBuilderRequest;
import org.apache.maven.api.services.ToolchainsBuilderResult;
import org.apache.maven.api.services.xml.ToolchainsXmlFactory;
import org.apache.maven.api.services.xml.XmlReaderException;
import org.apache.maven.api.services.xml.XmlReaderRequest;
import org.apache.maven.api.toolchain.PersistedToolchains;
import org.apache.maven.toolchain.v4.MavenToolchainsMerger;
import org.apache.maven.toolchain.v4.MavenToolchainsTransformer;
import org.codehaus.plexus.interpolation.EnvarBasedValueSource;
import org.codehaus.plexus.interpolation.InterpolationException;
import org.codehaus.plexus.interpolation.MapBasedValueSource;
import org.codehaus.plexus.interpolation.RegexBasedInterpolator;
/**
* Builds the effective toolchains from a user toolchains file and/or a global toolchains file.
*
*/
@Named
public class DefaultToolchainsBuilder implements ToolchainsBuilder {
private final MavenToolchainsMerger toolchainsMerger = new MavenToolchainsMerger();
@Override
public ToolchainsBuilderResult build(ToolchainsBuilderRequest request) throws ToolchainsBuilderException {
List<BuilderProblem> problems = new ArrayList<>();
Source globalSource = request.getGlobalToolchainsSource().orElse(null);
PersistedToolchains global = readToolchains(globalSource, request, problems);
Source userSource = request.getUserToolchainsSource().orElse(null);
PersistedToolchains user = readToolchains(userSource, request, problems);
PersistedToolchains effective = toolchainsMerger.merge(user, global, false, null);
if (hasErrors(problems)) {
throw new ToolchainsBuilderException("Error building toolchains", problems);
}
return new DefaultToolchainsBuilderResult(effective, problems);
}
private boolean hasErrors(List<BuilderProblem> problems) {
if (problems != null) {
for (BuilderProblem problem : problems) {
if (BuilderProblem.Severity.ERROR.compareTo(problem.getSeverity()) >= 0) {
return true;
}
}
}
return false;
}
private PersistedToolchains readToolchains(
Source toolchainsSource, ToolchainsBuilderRequest request, List<BuilderProblem> problems) {
if (toolchainsSource == null) {
return PersistedToolchains.newInstance();
}
PersistedToolchains toolchains;
try {
try {
InputStream is = toolchainsSource.openStream();
if (is == null) {
return PersistedToolchains.newInstance();
}
toolchains = request.getSession()
.getService(ToolchainsXmlFactory.class)
.read(XmlReaderRequest.builder()
.inputStream(is)
.location(toolchainsSource.getLocation())
.strict(true)
.build());
} catch (XmlReaderException e) {
InputStream is = toolchainsSource.openStream();
if (is == null) {
return PersistedToolchains.newInstance();
}
toolchains = request.getSession()
.getService(ToolchainsXmlFactory.class)
.read(XmlReaderRequest.builder()
.inputStream(is)
.location(toolchainsSource.getLocation())
.strict(false)
.build());
Location loc = e.getCause() instanceof XMLStreamException xe ? xe.getLocation() : null;
problems.add(new DefaultBuilderProblem(
toolchainsSource.getLocation(),
loc != null ? loc.getLineNumber() : -1,
loc != null ? loc.getColumnNumber() : -1,
e,
e.getMessage(),
BuilderProblem.Severity.WARNING));
}
} catch (XmlReaderException e) {
Location loc = e.getCause() instanceof XMLStreamException xe ? xe.getLocation() : null;
problems.add(new DefaultBuilderProblem(
toolchainsSource.getLocation(),
loc != null ? loc.getLineNumber() : -1,
loc != null ? loc.getColumnNumber() : -1,
e,
"Non-parseable toolchains " + toolchainsSource.getLocation() + ": " + e.getMessage(),
BuilderProblem.Severity.FATAL));
return PersistedToolchains.newInstance();
} catch (IOException e) {
problems.add(new DefaultBuilderProblem(
toolchainsSource.getLocation(),
-1,
-1,
e,
"Non-readable toolchains " + toolchainsSource.getLocation() + ": " + e.getMessage(),
BuilderProblem.Severity.FATAL));
return PersistedToolchains.newInstance();
}
toolchains = interpolate(toolchains, request, problems);
return toolchains;
}
private PersistedToolchains interpolate(
PersistedToolchains toolchains, ToolchainsBuilderRequest request, List<BuilderProblem> problems) {
RegexBasedInterpolator interpolator = new RegexBasedInterpolator();
interpolator.addValueSource(new MapBasedValueSource(request.getSession().getUserProperties()));
interpolator.addValueSource(new MapBasedValueSource(request.getSession().getSystemProperties()));
try {
interpolator.addValueSource(new EnvarBasedValueSource());
} catch (IOException e) {
problems.add(new DefaultBuilderProblem(
null,
-1,
-1,
e,
"Failed to use environment variables for interpolation: " + e.getMessage(),
BuilderProblem.Severity.WARNING));
}
return new MavenToolchainsTransformer(value -> {
try {
return value != null ? interpolator.interpolate(value) : null;
} catch (InterpolationException e) {
problems.add(new DefaultBuilderProblem(
null,
-1,
-1,
e,
"Failed to interpolate toolchains: " + e.getMessage(),
BuilderProblem.Severity.WARNING));
return value;
}
})
.visit(toolchains);
}
/**
* Collects the output of the toolchains builder.
*
*/
static class DefaultToolchainsBuilderResult implements ToolchainsBuilderResult {
private final PersistedToolchains effectiveToolchains;
private final List<BuilderProblem> problems;
DefaultToolchainsBuilderResult(PersistedToolchains effectiveToolchains, List<BuilderProblem> problems) {
this.effectiveToolchains = effectiveToolchains;
this.problems = (problems != null) ? problems : new ArrayList<>();
}
@Override
public PersistedToolchains getEffectiveToolchains() {
return effectiveToolchains;
}
@Override
public List<BuilderProblem> getProblems() {
return problems;
}
}
}