protected int installJava(Connection conn, PrintStream logger, Iterable<String> javaVersion)
throws IOException, InterruptedException {
int result = 1;
for (String version : javaVersion) {
result = conn.exec(getInstallCommand(version), logger);
if (result == 0) {
return result;
}
}
return result;
}
private boolean installJava(final PrintStream logger, final Connection conn)
throws IOException, InterruptedException {
logger.println("Verifying that java exists");
if (conn.exec("java -fullversion", logger) != 0) {
logger.println("Try to install one of these Java-versions: " + VALID_VERSIONS);
// TODO Web UI to let users install a custom java (or any other type of tool) package.
logger.println("Trying to find a working package manager");
for (JavaInstaller installer : INSTALLERS) {
if (!installer.isUsable(conn, logger)) {
continue;
}
if (installer.installJava(conn, logger, VALID_VERSIONS) == 0) {
return true;
}
}
logger.println("Java could not be installed using any of the supported package managers");
return false;
}
return true;
}
private boolean runInitScript(
final Computer computer, final PrintStream logger, final Connection conn, final SCPClient scp)
throws IOException, InterruptedException {
String initScript = Util.fixEmptyAndTrim(computer.getNode().getInitScript());
if (initScript == null) {
return true;
}
if (conn.exec("test -e ~/.hudson-run-init", logger) == 0) {
return true;
}
logger.println("Executing init script");
scp.put(initScript.getBytes("UTF-8"), "init.sh", "/tmp", "0700");
Session session = conn.openSession();
session.requestDumbPTY(); // so that the remote side bundles stdout and stderr
session.execCommand(buildUpCommand(computer, "/tmp/init.sh"));
session.getStdin().close(); // nothing to write here
session.getStderr().close(); // we are not supposed to get anything from stderr
IOUtils.copy(session.getStdout(), logger);
int exitStatus = waitCompletion(session);
if (exitStatus != 0) {
logger.println("init script failed: exit code=" + exitStatus);
return false;
}
session.close();
// Needs a tty to run sudo.
session = conn.openSession();
session.requestDumbPTY(); // so that the remote side bundles stdout and stderr
session.execCommand(buildUpCommand(computer, "touch ~/.hudson-run-init"));
session.close();
return true;
}
private boolean checkCommand(Connection conn, PrintStream logger, String command)
throws IOException, InterruptedException {
logger.println("Checking: " + command);
return conn.exec(command, logger) == 0;
}