Examples with OpsTarget org.platformlayer.ops.OpsTarget used on opensource projects

Example 41 with OpsTarget

use of org.platformlayer.ops.OpsTarget in project platformlayer by platformlayer.

the class ConfigureHostname method handle.

@Handler
public void handle() throws OpsException {
    OpsTarget target = OpsContext.get().getInstance(OpsTarget.class);
    if (Strings.isNullOrEmpty(hostname)) {
        throw new IllegalArgumentException();
    }
    // Fix hostname
    File hostsFile = new File("/etc/hosts");
    String hostLine = "127.0.0.1\t" + hostname;
    String hosts = target.readTextFile(hostsFile);
    boolean found = false;
    for (String line : Splitter.on("\n").trimResults().split(hosts)) {
        if (line.equals(hostLine)) {
            found = true;
        }
    }
    if (!found) {
        hosts += "\n" + hostLine + "\n";
        FileUpload.upload(target, hostsFile, hosts);
    }
    FileUpload.upload(target, new File("/etc/hostname"), hostname);
    {
        ProcessExecution execution = target.executeCommand("hostname");
        String currentHostname = execution.getStdOut().trim();
        if (!currentHostname.equals(hostname)) {
            if (!DetectVirtualization.isLxc(target)) {
                // This actually can't be done within an LXC instance, which is why we go to extraordinary lengths
                // to
                // set it on creation
                target.executeCommand("hostname {0}", hostname);
            } else {
                log.warn("Unable to change hostname on LXC: " + currentHostname + " -> " + hostname);
            }
        }
    }
}