Examples with MasterServiceManager io.cdap.cdap.common.twill.MasterServiceManager used on opensource projects

Example 6 with MasterServiceManager

use of io.cdap.cdap.common.twill.MasterServiceManager in project cdap by cdapio.

the class MonitorHandler method getBootStatus.

// Return the status of CDAP services in JSON format
@Path("/system/services/status")
@GET
public void getBootStatus(HttpRequest request, HttpResponder responder) {
    contextAccessEnforcer.enforceOnParent(EntityType.SYSTEM_SERVICE, InstanceId.SELF, StandardPermission.LIST);
    Map<String, String> result = new HashMap<>();
    for (String service : serviceManagementMap.keySet()) {
        MasterServiceManager masterServiceManager = serviceManagementMap.get(service);
        if (masterServiceManager.isServiceEnabled()) {
            String status = masterServiceManager.isServiceAvailable() ? STATUSOK : STATUSNOTOK;
            result.put(service, status);
        }
    }
    responder.sendJson(HttpResponseStatus.OK, GSON.toJson(result));
}

Example 7 with MasterServiceManager

use of io.cdap.cdap.common.twill.MasterServiceManager in project cdap by cdapio.

the class MonitorHandler method setServiceInstance.

/**
 * Sets the number of instances of CDAP Services
 */
@Path("/system/services/{service-name}/instances")
@PUT
@AuditPolicy(AuditDetail.REQUEST_BODY)
public void setServiceInstance(FullHttpRequest request, HttpResponder responder, @PathParam("service-name") final String serviceName) throws Exception {
    if (!serviceManagementMap.containsKey(serviceName)) {
        throw new NotFoundException(String.format("Invalid service name %s", serviceName));
    }
    SystemServiceId systemServiceId = new SystemServiceId(serviceName);
    contextAccessEnforcer.enforce(systemServiceId, StandardPermission.UPDATE);
    MasterServiceManager serviceManager = serviceManagementMap.get(serviceName);
    int instances = getInstances(request);
    if (!serviceManager.isServiceEnabled()) {
        throw new ForbiddenException(String.format("Service %s is not enabled", serviceName));
    }
    int currentInstances = getSystemServiceInstanceCount(serviceName);
    if (instances < serviceManager.getMinInstances() || instances > serviceManager.getMaxInstances()) {
        String response = String.format("Instance count should be between [%s,%s]", serviceManager.getMinInstances(), serviceManager.getMaxInstances());
        throw new BadRequestException(response);
    } else if (instances == currentInstances) {
        responder.sendStatus(HttpResponseStatus.OK);
        return;
    }
    serviceStore.setServiceInstance(serviceName, instances);
    if (serviceManager.setInstances(instances)) {
        responder.sendStatus(HttpResponseStatus.OK);
    } else {
        throw new BadRequestException("Operation did not succeed");
    }
}

Example 8 with MasterServiceManager

use of io.cdap.cdap.common.twill.MasterServiceManager in project cdap by cdapio.

the class MonitorHandler method restartInstances.

private void restartInstances(HttpResponder responder, String serviceName, int instanceId, boolean restartAll) throws Exception {
    long startTimeMs = System.currentTimeMillis();
    boolean isSuccess = true;
    if (!serviceManagementMap.containsKey(serviceName)) {
        throw new NotFoundException(String.format("Invalid service name %s", serviceName));
    }
    SystemServiceId systemServiceId = new SystemServiceId(serviceName);
    contextAccessEnforcer.enforce(systemServiceId, ApplicationPermission.EXECUTE);
    MasterServiceManager masterServiceManager = serviceManagementMap.get(serviceName);
    try {
        if (!masterServiceManager.isServiceEnabled()) {
            String message = String.format("Failed to restart instance for %s because the service is not enabled.", serviceName);
            LOG.debug(message);
            isSuccess = false;
            throw new ForbiddenException(message);
        }
        if (restartAll) {
            masterServiceManager.restartAllInstances();
        } else {
            if (instanceId < 0 || instanceId >= masterServiceManager.getInstances()) {
                throw new IllegalArgumentException();
            }
            masterServiceManager.restartInstances(instanceId);
        }
        responder.sendStatus(HttpResponseStatus.OK);
    } catch (IllegalStateException ise) {
        String message = String.format("Failed to restart instance for %s because the service may not be ready yet", serviceName);
        LOG.debug(message, ise);
        isSuccess = false;
        throw new ServiceUnavailableException(message);
    } catch (IllegalArgumentException iex) {
        String message = String.format("Failed to restart instance %d for service: %s because invalid instance id", instanceId, serviceName);
        LOG.debug(message, iex);
        isSuccess = false;
        throw new BadRequestException(message);
    } catch (Exception ex) {
        LOG.warn(String.format("Exception when trying to restart instances for service %s", serviceName), ex);
        isSuccess = false;
        throw new Exception(String.format("Error restarting instance %d for service: %s", instanceId, serviceName));
    } finally {
        long endTimeMs = System.currentTimeMillis();
        if (restartAll) {
            serviceStore.setRestartAllInstancesRequest(serviceName, startTimeMs, endTimeMs, isSuccess);
        } else {
            serviceStore.setRestartInstanceRequest(serviceName, startTimeMs, endTimeMs, isSuccess, instanceId);
        }
    }
}

Example 9 with MasterServiceManager

use of io.cdap.cdap.common.twill.MasterServiceManager in project cdap by cdapio.

the class MonitorHandler method resetServiceLogLevels.

/**
 * Reset the log levels of the service.
 * All loggers will be reset to the level when the service started.
 */
@Path("system/services/{service-name}/resetloglevels")
@POST
public void resetServiceLogLevels(FullHttpRequest request, HttpResponder responder, @PathParam("service-name") String serviceName) throws Exception {
    if (!serviceManagementMap.containsKey(serviceName)) {
        throw new NotFoundException(String.format("Invalid service name %s", serviceName));
    }
    SystemServiceId systemServiceId = new SystemServiceId(serviceName);
    contextAccessEnforcer.enforce(systemServiceId, StandardPermission.UPDATE);
    MasterServiceManager masterServiceManager = serviceManagementMap.get(serviceName);
    if (!masterServiceManager.isServiceEnabled()) {
        throw new ForbiddenException(String.format("Failed to reset log levels for service %s " + "because the service is not enabled", serviceName));
    }
    try {
        Set<String> loggerNames = parseBody(request, SET_STRING_TYPE);
        masterServiceManager.resetServiceLogLevels(loggerNames == null ? Collections.emptySet() : loggerNames);
        responder.sendStatus(HttpResponseStatus.OK);
    } catch (IllegalStateException ise) {
        throw new ServiceUnavailableException(String.format("Failed to reset log levels for service %s " + "because the service may not be ready yet", serviceName));
    } catch (JsonSyntaxException e) {
        throw new BadRequestException("Invalid Json in the body");
    }
}

Example 10 with MasterServiceManager

use of io.cdap.cdap.common.twill.MasterServiceManager in project cdap by cdapio.

the class MonitorHandler method getServiceSpec.

@Path("/system/services")
@GET
public void getServiceSpec(HttpRequest request, HttpResponder responder) {
    contextAccessEnforcer.enforceOnParent(EntityType.SYSTEM_SERVICE, InstanceId.SELF, StandardPermission.LIST);
    List<SystemServiceMeta> response = new ArrayList<>();
    SortedSet<String> services = new TreeSet<>(serviceManagementMap.keySet());
    List<String> serviceList = new ArrayList<>(services);
    for (String service : serviceList) {
        MasterServiceManager serviceManager = serviceManagementMap.get(service);
        if (serviceManager.isServiceEnabled()) {
            String logs = serviceManager.isLogAvailable() ? Constants.Monitor.STATUS_OK : Constants.Monitor.STATUS_NOTOK;
            String canCheck = serviceManager.isServiceAvailable() ? STATUSOK : STATUSNOTOK;
            // TODO: Add metric name for Event Rate monitoring
            response.add(new SystemServiceMeta(service, serviceManager.getDescription(), canCheck, logs, serviceManager.getMinInstances(), serviceManager.getMaxInstances(), getSystemServiceInstanceCount(service), serviceManager.getInstances()));
        }
    }
    responder.sendJson(HttpResponseStatus.OK, GSON.toJson(response));
}