/**
* Returns the execution plan name
*
* @param executionPlanAsString executionPlan (taken from code mirror) as a string
* @return execution plan name as given in @Plan:name('MyPlanName'). Returns null in the absence
* of @Plan:name('MyPlanName')
*/
public static String getExecutionPlanName(String executionPlanAsString) {
String executionPlanName = null;
ExecutionPlan executionPlan = SiddhiCompiler.parse(executionPlanAsString);
executionPlanName =
AnnotationHelper.getAnnotationElement(
EventProcessorConstants.ANNOTATION_NAME_NAME, null, executionPlan.getAnnotations())
.getValue();
return executionPlanName;
}
public static void validateExecutionPlan(String executionPlan)
throws ExecutionPlanConfigurationException, ExecutionPlanDependencyValidationException {
String planName;
int i = 0; // this is maintained for giving more context info in error messages, when throwing
// exceptions.
ArrayList<String> importedStreams = new ArrayList<String>();
ArrayList<String> exportedStreams = new ArrayList<String>();
Pattern databridgeStreamNamePattern =
Pattern.compile(EventProcessorConstants.DATABRIDGE_STREAM_REGEX);
Pattern streamVersionPattern = Pattern.compile(EventProcessorConstants.STREAM_VER_REGEX);
ExecutionPlan parsedExecPlan = SiddhiCompiler.parse(executionPlan);
Element element =
AnnotationHelper.getAnnotationElement(
EventProcessorConstants.ANNOTATION_NAME_NAME, null, parsedExecPlan.getAnnotations());
if (element == null) { // check if plan name is given
throw new ExecutionPlanConfigurationException(
"Execution plan name is not given. Please specify execution plan name using the annotation "
+ "'"
+ EventProcessorConstants.ANNOTATION_TOKEN_AT
+ EventProcessorConstants.ANNOTATION_PLAN
+ EventProcessorConstants.ANNOTATION_TOKEN_COLON
+ EventProcessorConstants.ANNOTATION_NAME_NAME
+ EventProcessorConstants.ANNOTATION_TOKEN_OPENING_BRACKET
+ EventProcessorConstants.SIDDHI_SINGLE_QUOTE
+ "executionPlanNameHere"
+ EventProcessorConstants.SIDDHI_SINGLE_QUOTE
+ EventProcessorConstants.ANNOTATION_TOKEN_CLOSING_BRACKET
+ "'");
}
planName = element.getValue();
if (planName.equals("")) {
throw new ExecutionPlanConfigurationException(
"Execution plan name is empty. Hence the plan is invalid");
}
if (planName.trim().contains(" ")) {
throw new ExecutionPlanConfigurationException(
"Execution plan name '"
+ planName
+ "' contains whitespaces. Please remove whitespaces.");
}
Map<String, org.wso2.siddhi.query.api.definition.StreamDefinition> streamDefMap =
parsedExecPlan.getStreamDefinitionMap();
for (Map.Entry<String, org.wso2.siddhi.query.api.definition.StreamDefinition> entry :
streamDefMap.entrySet()) {
Element importElement =
AnnotationHelper.getAnnotationElement(
EventProcessorConstants.ANNOTATION_IMPORT, null, entry.getValue().getAnnotations());
Element exportElement =
AnnotationHelper.getAnnotationElement(
EventProcessorConstants.ANNOTATION_EXPORT, null, entry.getValue().getAnnotations());
if (importElement != null && exportElement != null) {
throw new ExecutionPlanConfigurationException(
"Same stream definition has being imported and exported. Please correct "
+ i
+ "th of the "
+ parsedExecPlan.getStreamDefinitionMap().size()
+ "stream definition, with stream id '"
+ entry.getKey()
+ "'");
}
if (importElement
!= null) { // Treating import & export cases separately to give more specific error
// messages.
String atImportLiteral =
EventProcessorConstants.ANNOTATION_TOKEN_AT + EventProcessorConstants.ANNOTATION_IMPORT;
String importElementValue = importElement.getValue();
if (importElementValue == null || importElementValue.trim().isEmpty()) {
throw new ExecutionPlanConfigurationException(
"Imported stream cannot be empty as in '"
+ atImportLiteral
+ EventProcessorConstants.ANNOTATION_TOKEN_OPENING_BRACKET
+ EventProcessorConstants.SIDDHI_SINGLE_QUOTE
+ EventProcessorConstants.SIDDHI_SINGLE_QUOTE
+ EventProcessorConstants.ANNOTATION_TOKEN_CLOSING_BRACKET
+ "'. Please correct "
+ i
+ "th of the "
+ parsedExecPlan.getStreamDefinitionMap().size()
+ "stream definition, with stream id '"
+ entry.getKey()
+ "'");
}
String[] streamIdComponents =
importElementValue.split(EventProcessorConstants.STREAM_SEPARATOR);
if (streamIdComponents.length != 2) {
throw new ExecutionPlanConfigurationException(
"Found malformed "
+ atImportLiteral
+ " element '"
+ importElementValue
+ "'. "
+ atImportLiteral
+ " annotation should take the form '"
+ atImportLiteral
+ EventProcessorConstants.ANNOTATION_TOKEN_OPENING_BRACKET
+ EventProcessorConstants.SIDDHI_SINGLE_QUOTE
+ "streamName"
+ EventProcessorConstants.STREAM_SEPARATOR
+ "StreamVersion"
+ EventProcessorConstants.SIDDHI_SINGLE_QUOTE
+ EventProcessorConstants.ANNOTATION_TOKEN_CLOSING_BRACKET
+ "'. There should be a '"
+ EventProcessorConstants.STREAM_SEPARATOR
+ "' character, separating the streamName and its version");
}
if ((!databridgeStreamNamePattern.matcher(streamIdComponents[0].trim()).matches())) {
throw new ExecutionPlanConfigurationException(
"Invalid imported stream name["
+ streamIdComponents[0]
+ "] in execution plan:"
+ planName
+ ". Stream name should match the regex '"
+ EventProcessorConstants.DATABRIDGE_STREAM_REGEX
+ "'");
}
Matcher m = streamVersionPattern.matcher(streamIdComponents[1].trim());
if (!m.matches()) {
throw new ExecutionPlanConfigurationException(
"Invalid stream version ["
+ streamIdComponents[1]
+ "] for stream name "
+ streamIdComponents[0]
+ " in execution plan: "
+ planName
+ ". Stream version should match the regex '"
+ EventProcessorConstants.STREAM_VER_REGEX
+ "'");
}
validateSiddhiStreamWithDatabridgeStream(
streamIdComponents[0], streamIdComponents[1], entry.getValue());
if (exportedStreams.contains(
importElementValue)) { // check if same stream has been imported and exported.
throw new ExecutionPlanConfigurationException(
"Imported stream '"
+ importElementValue
+ "' is also among the exported streams. Hence the execution plan is invalid");
}
importedStreams.add(importElementValue);
}
if (exportElement != null) {
String atExportLiteral =
EventProcessorConstants.ANNOTATION_TOKEN_AT + EventProcessorConstants.ANNOTATION_EXPORT;
String exportElementValue = exportElement.getValue();
if (exportElementValue == null || exportElementValue.trim().isEmpty()) {
throw new ExecutionPlanConfigurationException(
"Exported stream cannot be empty as in '"
+ atExportLiteral
+ EventProcessorConstants.ANNOTATION_TOKEN_OPENING_BRACKET
+ EventProcessorConstants.SIDDHI_SINGLE_QUOTE
+ EventProcessorConstants.SIDDHI_SINGLE_QUOTE
+ EventProcessorConstants.ANNOTATION_TOKEN_CLOSING_BRACKET
+ "'. Please correct "
+ i
+ "th of the "
+ parsedExecPlan.getStreamDefinitionMap().size()
+ "stream definition, with stream id '"
+ entry.getKey());
}
String[] streamIdComponents =
exportElementValue.split(EventProcessorConstants.STREAM_SEPARATOR);
if (streamIdComponents.length != 2) {
throw new ExecutionPlanConfigurationException(
"Found malformed "
+ atExportLiteral
+ " element '"
+ exportElementValue
+ "'. "
+ atExportLiteral
+ " annotation should take the form '"
+ atExportLiteral
+ EventProcessorConstants.ANNOTATION_TOKEN_OPENING_BRACKET
+ EventProcessorConstants.SIDDHI_SINGLE_QUOTE
+ "streamName"
+ EventProcessorConstants.STREAM_SEPARATOR
+ "StreamVersion"
+ EventProcessorConstants.SIDDHI_SINGLE_QUOTE
+ EventProcessorConstants.ANNOTATION_TOKEN_CLOSING_BRACKET
+ "'. There should be a '"
+ EventProcessorConstants.STREAM_SEPARATOR
+ "' character, separating the streamName and its version");
}
if ((!databridgeStreamNamePattern.matcher(streamIdComponents[0].trim()).matches())) {
throw new ExecutionPlanConfigurationException(
"Invalid exported stream name["
+ streamIdComponents[0]
+ "] in execution plan:"
+ planName
+ ". Stream name should match the regex '"
+ EventProcessorConstants.DATABRIDGE_STREAM_REGEX
+ "'");
}
Matcher m = streamVersionPattern.matcher(streamIdComponents[1].trim());
if (!m.matches()) {
throw new ExecutionPlanConfigurationException(
"Invalid stream version ["
+ streamIdComponents[1]
+ "] for stream name "
+ streamIdComponents[0]
+ " in execution plan: "
+ planName
+ ". Stream version should match the regex '"
+ EventProcessorConstants.STREAM_VER_REGEX
+ "'");
}
validateSiddhiStreamWithDatabridgeStream(
streamIdComponents[0], streamIdComponents[1], entry.getValue());
if (importedStreams.contains(exportElementValue)) {
throw new ExecutionPlanConfigurationException(
"Exported stream '"
+ exportElementValue
+ "' is also among the imported streams. Hence the execution plan is invalid");
}
exportedStreams.add(exportElementValue);
}
i++;
}
SiddhiManager siddhiManager = EventProcessorValueHolder.getSiddhiManager();
loadDataSourceConfiguration(siddhiManager);
try {
siddhiManager.validateExecutionPlan(executionPlan);
} catch (Throwable t) {
throw new ExecutionPlanConfigurationException(t.getMessage(), t);
}
}