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package com.paypal.butterfly.utilities.pom;
import com.paypal.butterfly.extensions.api.TUExecutionResult;
import com.paypal.butterfly.extensions.api.TransformationContext;
import com.paypal.butterfly.extensions.api.TransformationUtility;
import com.paypal.butterfly.extensions.api.exception.TransformationDefinitionException;
import com.paypal.butterfly.extensions.api.exception.TransformationUtilityException;
import org.apache.commons.lang3.StringUtils;
import org.apache.maven.model.Model;
import org.apache.maven.model.io.xpp3.MavenXpp3Reader;
import org.codehaus.plexus.util.xml.pull.XmlPullParserException;
import java.io.BufferedInputStream;
import java.io.File;
import java.io.IOException;
import java.net.URL;
/**
* Load a Maven artifact, model it and place it in transformation context.
* There are two ways to specify the Maven artifact:
*
*
By its coordinates (group id, artifact id and version)
*
As a file, specified via regular {@link #relative(String)}, {@link #absolute(String)} or {@link #absolute(String, String)} methods
*
* If Maven artifact is set with both options, the Maven artifact coordinates will be used, and the file will be ignored.
*
* @author vkuncham, radkrish, facarvalho
*/
public class PomModel extends TransformationUtility {
private String groupId;
private String artifactId;
private String version;
private String repoURI = DEFAULT_REPO_URI;
private static final String DEFAULT_REPO_URI = "https://repo1.maven.org/maven2";
private static final String DESCRIPTION = "Retrieve the parent pom and load it in to Model Object";
/**
* Download a Maven artifact, model it and place it in transformation context.
* The Maven artifact is specified by its group id, artifact id and version.
*/
public PomModel() {
}
/**
* Download a Maven artifact, model it and place it in transformation context.
* The Maven artifact is specified by its group id, artifact id and version.
*
* @param groupId Maven artifact group id
* @param artifactId Maven artifact id
* @param version Maven artifact version
*/
public PomModel(String groupId, String artifactId, String version) {
setGroupId(groupId);
setArtifactId(artifactId);
setVersion(version);
}
/**
* Download a Maven artifact, model it and place it in transformation context.
* The Maven artifact is specified by its group id, artifact id and version.
*
* @param groupId Maven artifact group id
* @param artifactId Maven artifact id
* @param version Maven artifact version
* @param repoURI Maven repository URI
*/
public PomModel(String groupId, String artifactId, String version, String repoURI) {
setGroupId(groupId);
setArtifactId(artifactId);
setVersion(version);
setRepoURI(repoURI);
}
/**
* Sets the groupId, artifactId and version from artifactInfo
*
* @param artifactInfo groupId, artifactId and version separated by colons
* @return this transformation utility
*/
public PomModel setArtifact(String artifactInfo) {
checkForBlankString("artifactInfo", artifactInfo);
String[] artifactInfoArray = artifactInfo.split(":");
if (artifactInfoArray.length != 3) {
throw new TransformationDefinitionException("Artifact info should be specified as [groupId]:[artifactId]:[version]");
}
setGroupId(artifactInfoArray[0]);
setArtifactId(artifactInfoArray[1]);
setVersion(artifactInfoArray[2]);
return this;
}
/**
* Sets Maven artifact group id
*
* @param groupId Maven artifact group id
* @return this transformation utility
*/
public PomModel setGroupId(String groupId) {
checkForBlankString("groupId", groupId);
this.groupId = groupId;
return this;
}
/**
* @return Maven artifact group id
*/
public String getGroupId() {
return groupId;
}
/**
* Sets the artifactId
*
* @param artifactId Maven artifact id
* @return this transformation utility
*/
public PomModel setArtifactId(String artifactId) {
checkForBlankString("artifactId", artifactId);
this.artifactId = artifactId;
return this;
}
/**
* @return artifactId
*/
public String getArtifactId() {
return artifactId;
}
/**
* Sets the version
*
* @param version Maven artifact version
* @return this transformation utility
*/
public PomModel setVersion(String version) {
checkForBlankString("version", version);
this.version = version;
return this;
}
/**
* @return version
*/
public String getVersion() {
return version;
}
/**
* Sets the repoURI
*
* @param repoURI Maven repository URI
* @return this transformation utility
*/
public PomModel setRepoURI(String repoURI) {
checkForBlankString("repoURI", repoURI);
repoURI = repoURI.replaceAll("/$", "");
boolean valid = isValidURI(repoURI);
if (!valid) {
throw new TransformationDefinitionException("repoURI is not a valid URI");
}
this.repoURI = repoURI;
return this;
}
/**
* @return repoURI
*/
public String getRepoURI() {
return repoURI;
}
private boolean isValidURI(String uri) {
final URL url;
try {
url = new URL(uri);
} catch (Exception e1) {
return false;
}
return "https".equals(url.getProtocol()) || "http".equals(url.getProtocol());
}
@Override
public String getDescription() {
return String.format(DESCRIPTION);
}
@Override
protected TUExecutionResult execution(File transformedAppFolder, TransformationContext transformationContext) {
Model model;
try {
URL mavenArtifactUrl;
if (StringUtils.isNotBlank(groupId) && StringUtils.isNotBlank(artifactId) && StringUtils.isNotBlank(version)) {
mavenArtifactUrl = new URL(String.format("%s/%s/%s/%s/%s-%s.pom", repoURI, groupId, artifactId, version, artifactId, version));
} else if (wasFileExplicitlySet()) {
File localPomFile = getAbsoluteFile(transformedAppFolder, transformationContext);
mavenArtifactUrl = localPomFile.toURI().toURL();
} else {
return TUExecutionResult.error(this, new TransformationUtilityException("Maven coordinates are missing and local file was not set"));
}
try (BufferedInputStream inputStream = new BufferedInputStream(mavenArtifactUrl.openStream())) {
model = new MavenXpp3Reader().read(inputStream);
}
if (model == null) {
return TUExecutionResult.error(this, new TransformationUtilityException("Returned maven model is null"));
}
} catch (IOException | XmlPullParserException e) {
return TUExecutionResult.error(this, new TransformationUtilityException("The specified file could not be found or read and parsed as valid Maven pom file", e));
}
return TUExecutionResult.value(this, model);
}
}
