Set values you'd like to cache to the content of a FlowFile. Then pass it to PutDistributedCache.
You can enrich incoming FlowFiles by adding an attribute with a value fetched from DistributedCache.
<?xml version="1.0" ?> | |
<template encoding-version="1.0"> | |
<description></description> | |
<groupId>016ccfde-015a-1000-95c4-d82dda5e14e0</groupId> | |
<name>DistributedCache Put/Fetch example</name> | |
<snippet> | |
<processGroups> | |
<id>36bf253f-015a-1000-0000-000000000000</id> | |
<parentGroupId>016ccfde-015a-1000-0000-000000000000</parentGroupId> | |
<position> | |
<x>0.0</x> | |
<y>0.0</y> | |
</position> | |
<comments></comments> | |
<contents> | |
<connections> | |
<id>015a1001-3219-16c0-0000-000000000000</id> | |
<parentGroupId>36bf253f-015a-1000-0000-000000000000</parentGroupId> | |
<backPressureDataSizeThreshold>1 GB</backPressureDataSizeThreshold> | |
<backPressureObjectThreshold>10000</backPressureObjectThreshold> | |
<destination> | |
<groupId>36bf253f-015a-1000-0000-000000000000</groupId> | |
<id>36c074e8-015a-1000-0000-000000000000</id> | |
<type>PROCESSOR</type> | |
</destination> | |
<flowFileExpiration>0 sec</flowFileExpiration> | |
<labelIndex>1</labelIndex> | |
<name></name> | |
<selectedRelationships>success</selectedRelationships> | |
<source> | |
<groupId>36bf253f-015a-1000-0000-000000000000</groupId> | |
<id>015a1000-3219-16c0-0000-000000000000</id> | |
<type>PROCESSOR</type> | |
</source> | |
<zIndex>0</zIndex> | |
</connections> | |
<connections> | |
<id>015a1002-3219-16c0-0000-000000000000</id> | |
<parentGroupId>36bf253f-015a-1000-0000-000000000000</parentGroupId> | |
<backPressureDataSizeThreshold>1 GB</backPressureDataSizeThreshold> | |
<backPressureObjectThreshold>10000</backPressureObjectThreshold> | |
<destination> | |
<groupId>36bf253f-015a-1000-0000-000000000000</groupId> | |
<id>36c08c68-015a-1000-0000-000000000000</id> | |
<type>PROCESSOR</type> | |
</destination> | |
<flowFileExpiration>0 sec</flowFileExpiration> | |
<labelIndex>1</labelIndex> | |
<name></name> | |
<selectedRelationships>success</selectedRelationships> | |
<source> | |
<groupId>36bf253f-015a-1000-0000-000000000000</groupId> | |
<id>36c074e8-015a-1000-0000-000000000000</id> | |
<type>PROCESSOR</type> | |
</source> | |
<zIndex>0</zIndex> | |
</connections> | |
<connections> | |
<id>36c0450a-015a-1000-0000-000000000000</id> | |
<parentGroupId>36bf253f-015a-1000-0000-000000000000</parentGroupId> | |
<backPressureDataSizeThreshold>1 GB</backPressureDataSizeThreshold> | |
<backPressureObjectThreshold>10000</backPressureObjectThreshold> | |
<destination> | |
<groupId>36bf253f-015a-1000-0000-000000000000</groupId> | |
<id>36bfa7fc-015a-1000-0000-000000000000</id> | |
<type>PROCESSOR</type> | |
</destination> | |
<flowFileExpiration>0 sec</flowFileExpiration> | |
<labelIndex>1</labelIndex> | |
<name></name> | |
<selectedRelationships>success</selectedRelationships> | |
<source> | |
<groupId>36bf253f-015a-1000-0000-000000000000</groupId> | |
<id>36c03219-015a-1000-0000-000000000000</id> | |
<type>PROCESSOR</type> | |
</source> | |
<zIndex>0</zIndex> | |
</connections> | |
<controllerServices> | |
<id>36bf7056-015a-1000-0000-000000000000</id> | |
<parentGroupId>36bf253f-015a-1000-0000-000000000000</parentGroupId> | |
<comments></comments> | |
<descriptors> | |
<entry> | |
<key>Server Hostname</key> | |
<value> | |
<name>Server Hostname</name> | |
</value> | |
</entry> | |
<entry> | |
<key>Server Port</key> | |
<value> | |
<name>Server Port</name> | |
</value> | |
</entry> | |
<entry> | |
<key>SSL Context Service</key> | |
<value> | |
<identifiesControllerService>org.apache.nifi.ssl.SSLContextService</identifiesControllerService> | |
<name>SSL Context Service</name> | |
</value> | |
</entry> | |
<entry> | |
<key>Communications Timeout</key> | |
<value> | |
<name>Communications Timeout</name> | |
</value> | |
</entry> | |
</descriptors> | |
<name>DistributedMapCacheClientService</name> | |
<properties> | |
<entry> | |
<key>Server Hostname</key> | |
<value>localhost</value> | |
</entry> | |
<entry> | |
<key>Server Port</key> | |
</entry> | |
<entry> | |
<key>SSL Context Service</key> | |
</entry> | |
<entry> | |
<key>Communications Timeout</key> | |
</entry> | |
</properties> | |
<state>ENABLED</state> | |
<type>org.apache.nifi.distributed.cache.client.DistributedMapCacheClientService</type> | |
</controllerServices> | |
<processors> | |
<id>015a1000-3219-16c0-0000-000000000000</id> | |
<parentGroupId>36bf253f-015a-1000-0000-000000000000</parentGroupId> | |
<position> | |
<x>794.0000109406199</x> | |
<y>238.00000101055775</y> | |
</position> | |
<config> | |
<bulletinLevel>WARN</bulletinLevel> | |
<comments></comments> | |
<concurrentlySchedulableTaskCount>1</concurrentlySchedulableTaskCount> | |
<descriptors> | |
<entry> | |
<key>File Size</key> | |
<value> | |
<name>File Size</name> | |
</value> | |
</entry> | |
<entry> | |
<key>Batch Size</key> | |
<value> | |
<name>Batch Size</name> | |
</value> | |
</entry> | |
<entry> | |
<key>Data Format</key> | |
<value> | |
<name>Data Format</name> | |
</value> | |
</entry> | |
<entry> | |
<key>Unique FlowFiles</key> | |
<value> | |
<name>Unique FlowFiles</name> | |
</value> | |
</entry> | |
<entry> | |
<key>generate-ff-custom-text</key> | |
<value> | |
<name>generate-ff-custom-text</name> | |
</value> | |
</entry> | |
</descriptors> | |
<executionNode>ALL</executionNode> | |
<lossTolerant>false</lossTolerant> | |
<penaltyDuration>30 sec</penaltyDuration> | |
<properties> | |
<entry> | |
<key>File Size</key> | |
<value>0B</value> | |
</entry> | |
<entry> | |
<key>Batch Size</key> | |
<value>1</value> | |
</entry> | |
<entry> | |
<key>Data Format</key> | |
<value>Text</value> | |
</entry> | |
<entry> | |
<key>Unique FlowFiles</key> | |
<value>false</value> | |
</entry> | |
<entry> | |
<key>generate-ff-custom-text</key> | |
</entry> | |
</properties> | |
<runDurationMillis>0</runDurationMillis> | |
<schedulingPeriod>1d</schedulingPeriod> | |
<schedulingStrategy>TIMER_DRIVEN</schedulingStrategy> | |
<yieldDuration>1 sec</yieldDuration> | |
</config> | |
<name>GenerateFlowFile</name> | |
<relationships> | |
<autoTerminate>false</autoTerminate> | |
<name>success</name> | |
</relationships> | |
<style></style> | |
<type>org.apache.nifi.processors.standard.GenerateFlowFile</type> | |
</processors> | |
<processors> | |
<id>36bfa7fc-015a-1000-0000-000000000000</id> | |
<parentGroupId>36bf253f-015a-1000-0000-000000000000</parentGroupId> | |
<position> | |
<x>276.3153185578074</x> | |
<y>564.6436777683703</y> | |
</position> | |
<config> | |
<bulletinLevel>WARN</bulletinLevel> | |
<comments></comments> | |
<concurrentlySchedulableTaskCount>1</concurrentlySchedulableTaskCount> | |
<descriptors> | |
<entry> | |
<key>Cache Entry Identifier</key> | |
<value> | |
<name>Cache Entry Identifier</name> | |
</value> | |
</entry> | |
<entry> | |
<key>Distributed Cache Service</key> | |
<value> | |
<identifiesControllerService>org.apache.nifi.distributed.cache.client.DistributedMapCacheClient</identifiesControllerService> | |
<name>Distributed Cache Service</name> | |
</value> | |
</entry> | |
<entry> | |
<key>Cache update strategy</key> | |
<value> | |
<name>Cache update strategy</name> | |
</value> | |
</entry> | |
<entry> | |
<key>Max cache entry size</key> | |
<value> | |
<name>Max cache entry size</name> | |
</value> | |
</entry> | |
</descriptors> | |
<executionNode>ALL</executionNode> | |
<lossTolerant>false</lossTolerant> | |
<penaltyDuration>30 sec</penaltyDuration> | |
<properties> | |
<entry> | |
<key>Cache Entry Identifier</key> | |
<value>some-cache-key-${hostname()}</value> | |
</entry> | |
<entry> | |
<key>Distributed Cache Service</key> | |
<value>36bf7056-015a-1000-0000-000000000000</value> | |
</entry> | |
<entry> | |
<key>Cache update strategy</key> | |
<value>replace</value> | |
</entry> | |
<entry> | |
<key>Max cache entry size</key> | |
<value>1 MB</value> | |
</entry> | |
</properties> | |
<runDurationMillis>0</runDurationMillis> | |
<schedulingPeriod>0 sec</schedulingPeriod> | |
<schedulingStrategy>TIMER_DRIVEN</schedulingStrategy> | |
<yieldDuration>1 sec</yieldDuration> | |
</config> | |
<name>PutDistributedMapCache</name> | |
<relationships> | |
<autoTerminate>true</autoTerminate> | |
<name>failure</name> | |
</relationships> | |
<relationships> | |
<autoTerminate>true</autoTerminate> | |
<name>success</name> | |
</relationships> | |
<style></style> | |
<type>org.apache.nifi.processors.standard.PutDistributedMapCache</type> | |
</processors> | |
<processors> | |
<id>36c03219-015a-1000-0000-000000000000</id> | |
<parentGroupId>36bf253f-015a-1000-0000-000000000000</parentGroupId> | |
<position> | |
<x>277.0000109406199</x> | |
<y>297.00000101055775</y> | |
</position> | |
<config> | |
<bulletinLevel>WARN</bulletinLevel> | |
<comments></comments> | |
<concurrentlySchedulableTaskCount>1</concurrentlySchedulableTaskCount> | |
<descriptors> | |
<entry> | |
<key>File Size</key> | |
<value> | |
<name>File Size</name> | |
</value> | |
</entry> | |
<entry> | |
<key>Batch Size</key> | |
<value> | |
<name>Batch Size</name> | |
</value> | |
</entry> | |
<entry> | |
<key>Data Format</key> | |
<value> | |
<name>Data Format</name> | |
</value> | |
</entry> | |
<entry> | |
<key>Unique FlowFiles</key> | |
<value> | |
<name>Unique FlowFiles</name> | |
</value> | |
</entry> | |
<entry> | |
<key>generate-ff-custom-text</key> | |
<value> | |
<name>generate-ff-custom-text</name> | |
</value> | |
</entry> | |
</descriptors> | |
<executionNode>ALL</executionNode> | |
<lossTolerant>false</lossTolerant> | |
<penaltyDuration>30 sec</penaltyDuration> | |
<properties> | |
<entry> | |
<key>File Size</key> | |
<value>0B</value> | |
</entry> | |
<entry> | |
<key>Batch Size</key> | |
<value>1</value> | |
</entry> | |
<entry> | |
<key>Data Format</key> | |
<value>Text</value> | |
</entry> | |
<entry> | |
<key>Unique FlowFiles</key> | |
<value>false</value> | |
</entry> | |
<entry> | |
<key>generate-ff-custom-text</key> | |
<value>cached-value-${now()}</value> | |
</entry> | |
</properties> | |
<runDurationMillis>0</runDurationMillis> | |
<schedulingPeriod>1d</schedulingPeriod> | |
<schedulingStrategy>TIMER_DRIVEN</schedulingStrategy> | |
<yieldDuration>1 sec</yieldDuration> | |
</config> | |
<name>GenerateFlowFile</name> | |
<relationships> | |
<autoTerminate>false</autoTerminate> | |
<name>success</name> | |
</relationships> | |
<style></style> | |
<type>org.apache.nifi.processors.standard.GenerateFlowFile</type> | |
</processors> | |
<processors> | |
<id>36c074e8-015a-1000-0000-000000000000</id> | |
<parentGroupId>36bf253f-015a-1000-0000-000000000000</parentGroupId> | |
<position> | |
<x>785.0000109406199</x> | |
<y>441.00000101055775</y> | |
</position> | |
<config> | |
<bulletinLevel>WARN</bulletinLevel> | |
<comments></comments> | |
<concurrentlySchedulableTaskCount>1</concurrentlySchedulableTaskCount> | |
<descriptors> | |
<entry> | |
<key>Cache Entry Identifier</key> | |
<value> | |
<name>Cache Entry Identifier</name> | |
</value> | |
</entry> | |
<entry> | |
<key>Distributed Cache Service</key> | |
<value> | |
<identifiesControllerService>org.apache.nifi.distributed.cache.client.DistributedMapCacheClient</identifiesControllerService> | |
<name>Distributed Cache Service</name> | |
</value> | |
</entry> | |
<entry> | |
<key>Put Cache Value In Attribute</key> | |
<value> | |
<name>Put Cache Value In Attribute</name> | |
</value> | |
</entry> | |
<entry> | |
<key>Max Length To Put In Attribute</key> | |
<value> | |
<name>Max Length To Put In Attribute</name> | |
</value> | |
</entry> | |
<entry> | |
<key>Character Set</key> | |
<value> | |
<name>Character Set</name> | |
</value> | |
</entry> | |
</descriptors> | |
<executionNode>ALL</executionNode> | |
<lossTolerant>false</lossTolerant> | |
<penaltyDuration>30 sec</penaltyDuration> | |
<properties> | |
<entry> | |
<key>Cache Entry Identifier</key> | |
<value>some-cache-key-${hostname()}</value> | |
</entry> | |
<entry> | |
<key>Distributed Cache Service</key> | |
<value>36bf7056-015a-1000-0000-000000000000</value> | |
</entry> | |
<entry> | |
<key>Put Cache Value In Attribute</key> | |
<value>cached-value</value> | |
</entry> | |
<entry> | |
<key>Max Length To Put In Attribute</key> | |
<value>256</value> | |
</entry> | |
<entry> | |
<key>Character Set</key> | |
<value>UTF-8</value> | |
</entry> | |
</properties> | |
<runDurationMillis>0</runDurationMillis> | |
<schedulingPeriod>0 sec</schedulingPeriod> | |
<schedulingStrategy>TIMER_DRIVEN</schedulingStrategy> | |
<yieldDuration>1 sec</yieldDuration> | |
</config> | |
<name>FetchDistributedMapCache</name> | |
<relationships> | |
<autoTerminate>true</autoTerminate> | |
<name>failure</name> | |
</relationships> | |
<relationships> | |
<autoTerminate>true</autoTerminate> | |
<name>not-found</name> | |
</relationships> | |
<relationships> | |
<autoTerminate>false</autoTerminate> | |
<name>success</name> | |
</relationships> | |
<style></style> | |
<type>org.apache.nifi.processors.standard.FetchDistributedMapCache</type> | |
</processors> | |
<processors> | |
<id>36c08c68-015a-1000-0000-000000000000</id> | |
<parentGroupId>36bf253f-015a-1000-0000-000000000000</parentGroupId> | |
<position> | |
<x>792.9956774445261</x> | |
<y>672.4080820652453</y> | |
</position> | |
<config> | |
<bulletinLevel>WARN</bulletinLevel> | |
<comments></comments> | |
<concurrentlySchedulableTaskCount>1</concurrentlySchedulableTaskCount> | |
<descriptors> | |
<entry> | |
<key>Delete Attributes Expression</key> | |
<value> | |
<name>Delete Attributes Expression</name> | |
</value> | |
</entry> | |
<entry> | |
<key>Store State</key> | |
<value> | |
<name>Store State</name> | |
</value> | |
</entry> | |
<entry> | |
<key>Stateful Variables Initial Value</key> | |
<value> | |
<name>Stateful Variables Initial Value</name> | |
</value> | |
</entry> | |
</descriptors> | |
<executionNode>ALL</executionNode> | |
<lossTolerant>false</lossTolerant> | |
<penaltyDuration>30 sec</penaltyDuration> | |
<properties> | |
<entry> | |
<key>Delete Attributes Expression</key> | |
</entry> | |
<entry> | |
<key>Store State</key> | |
<value>Do not store state</value> | |
</entry> | |
<entry> | |
<key>Stateful Variables Initial Value</key> | |
</entry> | |
</properties> | |
<runDurationMillis>0</runDurationMillis> | |
<schedulingPeriod>0 sec</schedulingPeriod> | |
<schedulingStrategy>TIMER_DRIVEN</schedulingStrategy> | |
<yieldDuration>1 sec</yieldDuration> | |
</config> | |
<name>UpdateAttribute</name> | |
<relationships> | |
<autoTerminate>false</autoTerminate> | |
<name>success</name> | |
</relationships> | |
<style></style> | |
<type>org.apache.nifi.processors.attributes.UpdateAttribute</type> | |
</processors> | |
</contents> | |
<name>DistributedCache Put/Fetch example</name> | |
</processGroups> | |
</snippet> | |
<timestamp>02/13/2017 18:18:39 JST</timestamp> | |
</template> |