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/*******************************************************************************
* Copyright (c) 2017, 2018 Red Hat Inc. and others.
*
* This program and the accompanying materials are made
* available under the terms of the Eclipse Public License 2.0
* which is available at https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* Red Hat - Initial Contribution
*******************************************************************************/
package org.eclipse.linuxtools.jdt.docker.launcher;
import java.io.File;
import java.io.IOException;
import java.nio.ByteBuffer;
import org.eclipse.linuxtools.docker.core.DockerConnectionManager;
import org.eclipse.linuxtools.docker.core.DockerException;
import org.eclipse.linuxtools.docker.core.IDockerConnection;
import org.eclipse.linuxtools.docker.core.IDockerContainerConfig;
import org.eclipse.linuxtools.docker.core.IDockerHostConfig;
import org.eclipse.linuxtools.internal.docker.core.DockerConnection;
import org.eclipse.linuxtools.internal.docker.core.DockerContainerConfig;
import org.eclipse.linuxtools.internal.docker.core.DockerHostConfig;
import org.osgi.framework.Version;
import com.spotify.docker.client.DockerClient;
import com.spotify.docker.client.DockerClient.ExecCreateParam;
import com.spotify.docker.client.LogStream;
import com.spotify.docker.client.messages.ExecCreation;
public class ImageQuery {
private String id;
private DockerClient client;
private DockerConnection conn;
public ImageQuery(DockerConnection conn, String image) {
IDockerHostConfig hc = DockerHostConfig.builder().build();
IDockerContainerConfig cc = new DockerContainerConfig.Builder()
.image(image)
.cmd("/bin/sh") //$NON-NLS-1$
.attachStdout(true)
.attachStderr(true)
.attachStdin(true)
.openStdin(true)
.tty(true)
.build();
try {
this.id = conn.createContainer(cc, hc);
conn.startContainer(id, null);
this.client = conn.getClient();
this.conn = conn;
} catch (DockerException e) {
e.printStackTrace();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
private String exec(String [] cmd) {
LogStream stream = null;
try {
ExecCreation exeCr = client.execCreate(id, cmd,
ExecCreateParam.attachStdout(), ExecCreateParam.attachStderr(), ExecCreateParam.detach(),
ExecCreateParam.attachStdin()); // needed to avoid connection reset on unix socket
stream = client.execStart(exeCr.id());
StringBuffer res = new StringBuffer();
while (stream.hasNext()) {
ByteBuffer b = stream.next().content();
byte[] buffer = new byte[b.remaining()];
b.get(buffer);
res.append(new String(buffer));
}
return res.toString();
} catch (Exception e) {
e.printStackTrace();
} finally {
stream.close();
}
return null;
}
public String getDefaultJVMName () {
String result = null;
File f = getDefaultJVMInstallLocation();
if (f != null) {
result = f.getName();
}
return result;
}
public File getDefaultJVMInstallLocation () {
final String JRE = "jre"; //$NON-NLS-1$
final String[] fgCandidateJavaFiles = {"javaw", "javaw.exe", "java", "java.exe", "j9w", "j9w.exe", "j9", "j9.exe"}; //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$ //$NON-NLS-5$ //$NON-NLS-6$ //$NON-NLS-7$ //$NON-NLS-8$
final String[] fgCandidateJavaLocations = {JRE + UnixFile.separatorChar + "bin" + UnixFile.separatorChar, "bin" + UnixFile.separatorChar}; //$NON-NLS-1$ //$NON-NLS-2$
String result = exec(new String [] {"sh", "-c", "readlink -f `which java`"}); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
if (result != null) {
result = result.replaceAll("\n", ""); //$NON-NLS-1$ //$NON-NLS-2$
for (int i = 0; i < fgCandidateJavaFiles.length; i++) {
for (int j = 0; j < fgCandidateJavaLocations.length; j++) {
if (result.endsWith(fgCandidateJavaLocations[j] + fgCandidateJavaFiles[i])) {
return new UnixFile(result.replace(fgCandidateJavaLocations[j] + fgCandidateJavaFiles[i], "")); //$NON-NLS-1$
}
}
}
result = exec(new String [] {"readlink", "-f", "/usr/lib/jvm/java"}); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
if (result != null) {
result = result.replaceAll("\n", ""); //$NON-NLS-1$ //$NON-NLS-2$
}
return new UnixFile(result);
} else {
return null;
}
}
public double getJavaVersion () {
String result = exec(new String [] {"sh", "-c", "java -version 2>&1 | grep version | cut -d\\\" -f2 | cut -d_ -f1"}); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
if (result != null) {
result = result.replaceAll("\n", ""); //$NON-NLS-1$ //$NON-NLS-2$
Version v = new Version(result);
String newV = v.getMajor() + "." + v.getMinor(); //$NON-NLS-1$
return Double.valueOf(newV);
} else {
return 0;
}
}
public boolean fileExists (File file) {
String result = exec(new String [] {"sh", "-c", "[ -e " + file.getAbsolutePath() + " ]; echo $?"}); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$
try {
result = result.replaceAll("\n", ""); //$NON-NLS-1$ //$NON-NLS-2$
int res = Integer.parseInt(result);
return res == 0;
} catch (NumberFormatException e) {
return false;
}
}
public boolean isFile (File file) {
String result = exec(new String [] {"sh", "-c", "[ -f " + file.getAbsolutePath() + " ]; echo $?"}); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$
try {
result = result.replaceAll("\n", ""); //$NON-NLS-1$ //$NON-NLS-2$
int res = Integer.parseInt(result);
return res == 0;
} catch (NumberFormatException e) {
return false;
}
}
public void destroy() {
try {
conn.stopContainer(id);
conn.removeContainer(id);
} catch (DockerException e) {
e.printStackTrace();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
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