/**
* attempts to resolve hostnameTarget from origin
*
* @return null if it definitively can't be resolved, best-effort IP address if possible, or blank
* if we could not run ssh or make sense of the output
*/
public static String getResolvedAddress(
Entity entity, SshMachineLocation origin, String hostnameTarget) {
ProcessTaskWrapper<Integer> task =
SshTasks.newSshExecTaskFactory(origin, "ping -c 1 -t 1 " + hostnameTarget)
.summary("checking resolution of " + hostnameTarget)
.allowingNonZeroExitCode()
.newTask();
DynamicTasks.queueIfPossible(task).orSubmitAndBlock(entity).asTask().blockUntilEnded();
if (task.asTask().isError()) {
log.warn(
"ping could not be run, at "
+ entity
+ " / "
+ origin
+ ": "
+ Tasks.getError(task.asTask()));
return "";
}
if (task.getExitCode() == null || task.getExitCode() != 0) {
if (task.getExitCode() != null && task.getExitCode() < 10) {
// small number means ping failed to resolve or ping the hostname
log.debug(
"not able to resolve "
+ hostnameTarget
+ " from "
+ origin
+ " for "
+ entity
+ " because exit code was "
+ task.getExitCode());
return null;
}
// large number means ping probably did not run
log.warn(
"ping not run as expected, at "
+ entity
+ " / "
+ origin
+ " (code "
+ task.getExitCode()
+ "):\n"
+ task.getStdout().trim()
+ " --- "
+ task.getStderr().trim());
return "";
}
String out = task.getStdout();
try {
String line1 = Strings.getFirstLine(out);
String ip = Strings.getFragmentBetween(line1, "(", ")");
if (Strings.isNonBlank(ip)) return ip;
} catch (Exception e) {
Exceptions.propagateIfFatal(e);
/* ignore non-parseable output */
}
if (out.contains("127.0.0.1")) return "127.0.0.1";
return "";
}
@Override
public void customize() {
newScript(CUSTOMIZING)
.body
.append(
format("mkdir -p %s", getRunDir()),
format("cp -R %s/dist/{conf,html,logs,sbin} %s", getExpandedInstallDir(), getRunDir()))
.execute();
// Install static content archive, if specified
String archiveUrl = entity.getConfig(NginxController.STATIC_CONTENT_ARCHIVE_URL);
if (Strings.isNonBlank(archiveUrl)) {
getEntity().deploy(archiveUrl);
}
customizationCompleted = true;
getEntity().doExtraConfigurationDuringStart();
}
@SuppressWarnings("rawtypes")
private static void addNamedAction(
MutableMap.Builder<String, URI> lb,
RendererHints.NamedAction na,
Entity entity,
Sensor<?> sensor) {
if (na instanceof RendererHints.NamedActionWithUrl) {
try {
String v =
((RendererHints.NamedActionWithUrl) na).getUrl(entity, (AttributeSensor<?>) sensor);
if (Strings.isNonBlank(v)) {
String action = na.getActionName().toLowerCase();
lb.putIfAbsent("action:" + action, URI.create(v));
}
} catch (Exception e) {
Exceptions.propagateIfFatal(e);
log.warn("Unable to make use of URL sensor " + sensor + " on " + entity + ": " + e);
}
}
}
@Override
public boolean isAuthenticated(HttpSession session) {
if (session == null) return false;
Object value = session.getAttribute(getAuthenticationKey());
return Strings.isNonBlank(Strings.toString(value));
}
