本文整理汇总了Java中org.apache.nifi.components.state.StateManager.getState方法的典型用法代码示例。如果您正苦于以下问题：Java StateManager.getState方法的具体用法？Java StateManager.getState怎么用？Java StateManager.getState使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类org.apache.nifi.components.state.StateManager的用法示例。
在下文中一共展示了StateManager.getState方法的5个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: incrementAndSet
import org.apache.nifi.components.state.StateManager; //导入方法依赖的package包/类
private Map<String, String> incrementAndSet(StateManager stateManager, double value, boolean resetFirst) throws IOException {
StateMap stateMap = stateManager.getState(Scope.LOCAL);
String oldSumString = stateMap.get(TUMBLING_WINDOW_SUM_KEY);
String oldCountString = stateMap.get(TUMBLING_WINDOW_COUNT_KEY);
if (oldCountString == null || oldSumString == null) {
oldSumString = "0.0";
oldCountString = "0";
}
String newSumString = String.valueOf(value);
String newCountString = "1";
if (!resetFirst) {
newSumString = String.valueOf(Double.valueOf(oldSumString) + value);
newCountString = String.valueOf(Long.valueOf(oldCountString) + 1);
}
Map<String, String> newState = ImmutableMap.of(TUMBLING_WINDOW_SUM_KEY, newSumString, TUMBLING_WINDOW_COUNT_KEY, newCountString);
stateManager.setState(newState, Scope.LOCAL);
return resetFirst ?
ImmutableMap.of(TUMBLING_WINDOW_SUM_KEY, oldSumString, TUMBLING_WINDOW_COUNT_KEY, oldCountString) :
newState;
}
示例2: testStateJavascript
import org.apache.nifi.components.state.StateManager; //导入方法依赖的package包/类
/**
* Demonstrates reading and writing processor state values
* @throws Exception
*/
@Test
public void testStateJavascript() throws Exception {
final TestRunner runner = TestRunners.newTestRunner(new ExecuteScript());
runner.setValidateExpressionUsage(false);
runner.setProperty(SCRIPT_ENGINE, "ECMAScript");
runner.setProperty(ScriptingComponentUtils.SCRIPT_FILE, "src/test/resources/executescript/state/state.js");
runner.setProperty(ScriptingComponentUtils.MODULES, "src/test/resources/executescript");
runner.assertValid();
StateManager stateManager = runner.getStateManager();
stateManager.clear(Scope.CLUSTER);
Map<String, String> initialStateValues = new HashMap<>();
initialStateValues.put("some-state", "foo");
stateManager.setState(initialStateValues, Scope.CLUSTER);
runner.enqueue("sample text".getBytes(StandardCharsets.UTF_8));
runner.run();
runner.assertAllFlowFilesTransferred("success", 1);
StateMap resultStateValues = stateManager.getState(Scope.CLUSTER);
Assert.assertEquals("foobar", resultStateValues.get("some-state"));
}
示例3: testStatePython
import org.apache.nifi.components.state.StateManager; //导入方法依赖的package包/类
/**
* Demonstrates reading and writing processor state values
* @throws Exception
*/
@Test
public void testStatePython() throws Exception {
final TestRunner runner = TestRunners.newTestRunner(new ExecuteScript());
runner.setValidateExpressionUsage(false);
runner.setProperty(SCRIPT_ENGINE, "python");
runner.setProperty(ScriptingComponentUtils.SCRIPT_FILE, "src/test/resources/executescript/state/state.py");
runner.setProperty(ScriptingComponentUtils.MODULES, "src/test/resources/executescript");
runner.assertValid();
StateManager stateManager = runner.getStateManager();
stateManager.clear(Scope.CLUSTER);
Map<String, String> initialStateValues = new HashMap<>();
initialStateValues.put("some-state", "foo");
stateManager.setState(initialStateValues, Scope.CLUSTER);
runner.enqueue("sample text".getBytes(StandardCharsets.UTF_8));
runner.run();
runner.assertAllFlowFilesTransferred("success", 1);
StateMap resultStateValues = stateManager.getState(Scope.CLUSTER);
Assert.assertEquals("foobar", resultStateValues.get("some-state"));
}
示例4: getLastEventId
import org.apache.nifi.components.state.StateManager; //导入方法依赖的package包/类
private long getLastEventId(StateManager stateManager) {
try {
final StateMap stateMap = stateManager.getState(Scope.CLUSTER);
final String lastEventIdStr = stateMap.get("lastEventId");
final long lastEventId = lastEventIdStr != null ? Long.parseLong(lastEventIdStr) : 0;
return lastEventId;
} catch (final IOException ioe) {
getLogger().warn("Failed to retrieve the last event id from the "
+ "state manager.", ioe);
return 0;
}
}
示例5: setLastEventId
import org.apache.nifi.components.state.StateManager; //导入方法依赖的package包/类
private void setLastEventId(StateManager stateManager, long eventId) throws IOException {
final StateMap stateMap = stateManager.getState(Scope.CLUSTER);
final Map<String, String> statePropertyMap = new HashMap<>(stateMap.toMap());
statePropertyMap.put("lastEventId", Long.toString(eventId));
stateManager.setState(statePropertyMap, Scope.CLUSTER);
}