How to use

isSet

method

in

org.apache.slider.common.tools.SliderUtils

public YarnRegistryViewForProviders(RegistryOperations registryOperations,
  String user,
  String sliderServiceClass,
  String instanceName,
  ApplicationAttemptId applicationAttemptId) {
 Preconditions.checkArgument(registryOperations != null,
   "null registry operations");
 Preconditions.checkArgument(user != null, "null user");
 Preconditions.checkArgument(SliderUtils.isSet(sliderServiceClass),
   "unset service class");
 Preconditions.checkArgument(SliderUtils.isSet(instanceName),
   "instanceName");
 Preconditions.checkArgument(applicationAttemptId != null,
   "null applicationAttemptId");
 this.registryOperations = registryOperations;
 this.user = user;
 this.sliderServiceClass = sliderServiceClass;
 this.instanceName = instanceName;
 this.applicationAttemptId = applicationAttemptId;
}

/**
 * Release a tag associated with a container
 *
 * @param component
 * @param containerId
 */
public void releaseTag(String component, String containerId) {
 if (SliderUtils.isSet(component) && SliderUtils.isSet(containerId)) {
  ConcurrentHashMap<String, String> compTags = allTags.get(component);
  if (compTags != null) {
   synchronized (compTags) {
    for (String key : compTags.keySet()) {
     if (compTags.get(key).equals(containerId)) {
      compTags.put(key, FREE);
     }
    }
   }
  }
 }
}

/**
 * Release a tag associated with a container
 *
 * @param component
 * @param containerId
 */
public void releaseTag(String component, String containerId) {
 if (SliderUtils.isSet(component) && SliderUtils.isSet(containerId)) {
  ConcurrentHashMap<String, String> compTags = allTags.get(component);
  if (compTags != null) {
   synchronized (compTags) {
    for (String key : compTags.keySet()) {
     if (compTags.get(key).equals(containerId)) {
      compTags.put(key, FREE);
     }
    }
   }
  }
 }
}

/**
 * Set the size of the heap if a non-empty heap is passed in. 
 * @param heap empty string or something like "128M" ,"1G" etc. The value is
 * trimmed.
 */
public void setJVMHeap(String heap) {
 if (SliderUtils.isSet(heap)) {
  add("-Xmx" + heap.trim());
 }
}

/**
 * Set the size of the heap if a non-empty heap is passed in. 
 * @param heap empty string or something like "128M" ,"1G" etc. The value is
 * trimmed.
 */
public void setJVMHeap(String heap) {
 if (SliderUtils.isSet(heap)) {
  add("-Xmx" + heap.trim());
 }
}

public boolean isSet(String key) {
 return SliderUtils.isSet(get(key));
}

public boolean isSet(String key) {
 return SliderUtils.isSet(get(key));
}

/**
 * Build up the path string for package install location -no attempt to
 * create the directory is made
 *
 * @return the path for persistent app package
 */
public Path buildPackageDirPath(String packageName, String packageVersion) {
 Preconditions.checkNotNull(packageName);
 Path path = getBaseApplicationPath();
 path = new Path(path, SliderKeys.PACKAGE_DIRECTORY + "/" + packageName);
 if (SliderUtils.isSet(packageVersion)) {
  path = new Path(path, packageVersion);
 }
 return path;
}

/**
 * Build up the path string for package install location -no attempt to
 * create the directory is made
 *
 * @return the path for persistent app package
 */
public Path buildPackageDirPath(String packageName, String packageVersion) {
 Preconditions.checkNotNull(packageName);
 Path path = getBaseApplicationPath();
 path = new Path(path, SliderKeys.PACKAGE_DIRECTORY + "/" + packageName);
 if (SliderUtils.isSet(packageVersion)) {
  path = new Path(path, packageVersion);
 }
 return path;
}

private boolean isDockerContainer(String roleGroup) {
 String type = getApplicationComponent(roleGroup).getType();
 if (SliderUtils.isSet(type)) {
  return type.toLowerCase().equals(SliderUtils.DOCKER) || type.toLowerCase().equals(SliderUtils.DOCKER_YARN);
 }
 return false;
}

private boolean isDockerContainer(String roleGroup) {
 String type = getApplicationComponent(roleGroup).getType();
 if (SliderUtils.isSet(type)) {
  return type.toLowerCase().equals(SliderUtils.DOCKER) || type.toLowerCase().equals(SliderUtils.DOCKER_YARN);
 }
 return false;
}

private boolean isYarnDockerContainer(String roleGroup) {
 String type = getApplicationComponent(roleGroup).getType();
 if (SliderUtils.isSet(type)) {
  return type.toLowerCase().equals(SliderUtils.DOCKER_YARN);
 }
 return false;
}

private boolean isYarnDockerContainer(String roleGroup) {
 String type = getApplicationComponent(roleGroup).getType();
 if (SliderUtils.isSet(type)) {
  return type.toLowerCase().equals(SliderUtils.DOCKER_YARN);
 }
 return false;
}

 /**
  * Query for the image path being set (non null/non empty)
  * @return true if there is a path in the image path option
  */
 @JsonIgnore
 public boolean isImagePathSet() {
  return SliderUtils.isSet(getImagePath());
 }
}

 /**
  * Query for the image path being set (non null/non empty)
  * @return true if there is a path in the image path option
  */
 @JsonIgnore
 public boolean isImagePathSet() {
  return SliderUtils.isSet(getImagePath());
 }
}

/**
 * Inner Validation logic for container request
 * @param containerRequest request
 * @param priority raw priority of role
 * @param requestDetails details for error messages
 */
@VisibleForTesting
public static void validateContainerRequest(AMRMClient.ContainerRequest containerRequest,
 int priority, String requestDetails) {
 String exp = containerRequest.getNodeLabelExpression();
 boolean hasRacks = containerRequest.getRacks() != null &&
  (!containerRequest.getRacks().isEmpty());
 boolean hasNodes = containerRequest.getNodes() != null &&
  (!containerRequest.getNodes().isEmpty());
 boolean hasLabel = SliderUtils.isSet(exp);
 // Don't support specifying >= 2 node labels in a node label expression now
 if (hasLabel && (exp.contains("&&") || exp.contains("||"))) {
  throw new InvalidContainerRequestException(
    "Cannot specify more than two node labels"
      + " in a single node label expression: " + requestDetails);
 }
 // Don't allow specify node label against ANY request listing hosts or racks
 if (hasLabel && ( hasRacks || hasNodes)) {
  throw new InvalidContainerRequestException(
    "Cannot specify node label with rack or node: " + requestDetails);
 }
}

 @Override
 public void validate() throws BadCommandArgumentsException, UsageException {
  super.validate();
  if (keytab != null && SliderUtils.isUnset(principal)) {
   throw new UsageException("Missing argument " + ARG_PRINCIPAL);
  }
  if (keytab == null && SliderUtils.isSet(principal)) {
   throw new UsageException("Missing argument " + ARG_KEYTAB);
  }
 }
}

 @Override
 public void validate() throws BadCommandArgumentsException, UsageException {
  super.validate();
  if (keytab != null && SliderUtils.isUnset(principal)) {
   throw new UsageException("Missing argument " + ARG_PRINCIPAL);
  }
  if (keytab == null && SliderUtils.isSet(principal)) {
   throw new UsageException("Missing argument " + ARG_KEYTAB);
  }
 }
}

/**
 * Add the ZK paths to the application options. 
 * 
 * @param zkBinding ZK binding
 */
public void addZKBinding(ZKPathBuilder zkBinding) throws BadConfigException {
 String quorum = zkBinding.getAppQuorum();
 if (SliderUtils.isSet(quorum)) {
  MapOperations globalAppOptions =
    instanceDescription.getAppConfOperations().getGlobalOptions();
  globalAppOptions.put(ZOOKEEPER_PATH, zkBinding.getAppPath());
  globalAppOptions.put(ZOOKEEPER_QUORUM, quorum);
  globalAppOptions.put(ZOOKEEPER_HOSTS,
    ZookeeperUtils.convertToHostsOnlyList(quorum));
 }
}

/**
 * Add the ZK paths to the application options. 
 * 
 * @param zkBinding ZK binding
 */
public void addZKBinding(ZKPathBuilder zkBinding) throws BadConfigException {
 String quorum = zkBinding.getAppQuorum();
 if (SliderUtils.isSet(quorum)) {
  MapOperations globalAppOptions =
    instanceDescription.getAppConfOperations().getGlobalOptions();
  globalAppOptions.put(ZOOKEEPER_PATH, zkBinding.getAppPath());
  globalAppOptions.put(ZOOKEEPER_QUORUM, quorum);
  globalAppOptions.put(ZOOKEEPER_HOSTS,
    ZookeeperUtils.convertToHostsOnlyList(quorum));
 }
}