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The following commit(s) were added to refs/heads/develop by this push:
new 485411b5f6 GEODE-10299: update examples for creating dynamic regions
(#7681)
485411b5f6 is described below
commit 485411b5f6b927c6a7a8d016084ab6e49260bfb5
Author: Max Hufnagel <mhufna...@vmware.com>
AuthorDate: Wed May 11 16:17:52 2022 -0700
GEODE-10299: update examples for creating dynamic regions (#7681)
---
.../dynamic_region_creation.html.md.erb | 133 ++++++++-------------
1 file changed, 50 insertions(+), 83 deletions(-)
diff --git
a/geode-docs/developing/region_options/dynamic_region_creation.html.md.erb
b/geode-docs/developing/region_options/dynamic_region_creation.html.md.erb
index fd88b7259c..54a54130ca 100644
--- a/geode-docs/developing/region_options/dynamic_region_creation.html.md.erb
+++ b/geode-docs/developing/region_options/dynamic_region_creation.html.md.erb
@@ -38,58 +38,49 @@ In the following example, the `CreateRegionFunction` class
defines a function in
#CreateRegionFunction.java
import org.apache.geode.cache.Cache;
-import org.apache.geode.cache.CacheFactory;
import org.apache.geode.cache.DataPolicy;
import org.apache.geode.cache.Declarable;
import org.apache.geode.cache.Region;
-import org.apache.geode.cache.RegionAttributes;
import org.apache.geode.cache.RegionFactory;
import org.apache.geode.cache.Scope;
+import org.apache.geode.cache.configuration.RegionConfig;
+
import org.apache.geode.cache.execute.Function;
import org.apache.geode.cache.execute.FunctionContext;
import java.util.Properties;
-public class CreateRegionFunction implements Function, Declarable {
+public class CreateRegionFunction implements Function<RegionConfig>,
Declarable {
- private final Cache cache;
-
- private final Region<String,RegionAttributes> regionAttributesMetadataRegion;
+ private Region<String,RegionConfig> regionAttributesMetadataRegion;
private static final String REGION_ATTRIBUTES_METADATA_REGION =
- "_regionAttributesMetadata";
+
"_regionAttributesMetadata";
- public enum Status {SUCCESSFUL, UNSUCCESSFUL, ALREADY_EXISTS};
-
- public CreateRegionFunction() {
- this.cache = CacheFactory.getAnyInstance();
- this.regionAttributesMetadataRegion =
createRegionAttributesMetadataRegion();
- }
+ public enum Status {SUCCESSFUL, UNSUCCESSFUL, ALREADY_EXISTS}
- public void execute(FunctionContext context) {
- Object[] arguments = (Object[]) context.getArguments();
- String regionName = (String) arguments[0];
- RegionAttributes attributes = (RegionAttributes) arguments[1];
+ public void execute(FunctionContext<RegionConfig> context) {
+ RegionConfig regionConfig = context.getArguments();
// Create or retrieve region
- Status status = createOrRetrieveRegion(regionName, attributes);
+ Status status = createOrRetrieveRegion(context.getCache(), regionConfig);
// Return status
context.getResultSender().lastResult(status);
}
-
- private Status createOrRetrieveRegion(String regionName,
- RegionAttributes attributes) {
+
+ private Status createOrRetrieveRegion(Cache cache, RegionConfig
regionConfig) {
Status status = Status.SUCCESSFUL;
- Region region = this.cache.getRegion(regionName);
+ String regionName = regionConfig.getName();
+ Region<Object, Object> region = cache.getRegion(regionName);
if (region == null) {
- // Put the attributes into the metadata region. The afterCreate call will
- // actually create the region.
- this.regionAttributesMetadataRegion.put(regionName, attributes);
+ // Put the attributes into the metadata region. The afterCreate call
+ // creates the region.
+ this.regionAttributesMetadataRegion.put(regionName, regionConfig);
// Retrieve the region after creating it
- region = this.cache.getRegion(regionName);
+ region = cache.getRegion(regionName);
if (region == null) {
status = Status.UNSUCCESSFUL;
}
@@ -99,38 +90,25 @@ public class CreateRegionFunction implements Function,
Declarable {
return status;
}
- private Region<String,RegionAttributes>
- createRegionAttributesMetadataRegion() {
- Region<String, RegionAttributes> metaRegion =
-
this.cache.getRegion(REGION_ATTRIBUTES_METADATA_REGION);
- if (metaRegion == null) {
- RegionFactory<String, RegionAttributes> factory =
- this.cache.createRegionFactory();
+ private void initializeRegionAttributesMetadataRegion(Cache cache) {
+ this.regionAttributesMetadataRegion =
+
cache.getRegion(REGION_ATTRIBUTES_METADATA_REGION);
+ if (this.regionAttributesMetadataRegion == null) {
+ RegionFactory<String, RegionConfig> factory =
cache.createRegionFactory();
factory.setDataPolicy(DataPolicy.REPLICATE);
factory.setScope(Scope.DISTRIBUTED_ACK);
factory.addCacheListener(new CreateRegionCacheListener());
- metaRegion = factory.create(REGION_ATTRIBUTES_METADATA_REGION);
+ this.regionAttributesMetadataRegion =
+
factory.create(REGION_ATTRIBUTES_METADATA_REGION);
}
- return metaRegion;
}
public String getId() {
return getClass().getSimpleName();
}
- public boolean optimizeForWrite() {
- return false;
- }
-
- public boolean isHA() {
- return true;
- }
-
- public boolean hasResult() {
- return true;
- }
-
- public void init(Properties properties) {
+ public void initialize(Cache cache, Properties properties) {
+ initializeRegionAttributesMetadataRegion(cache);
}
}
```
@@ -141,58 +119,47 @@ The `CreateRegionCacheListener` class is a cache listener
that implements two me
#CreateRegionCacheListener.java
import org.apache.geode.cache.Cache;
-import org.apache.geode.cache.CacheFactory;
import org.apache.geode.cache.Declarable;
import org.apache.geode.cache.EntryEvent;
import org.apache.geode.cache.Region;
-import org.apache.geode.cache.RegionAttributes;
import org.apache.geode.cache.RegionEvent;
import org.apache.geode.cache.RegionExistsException;
+import org.apache.geode.cache.configuration.RegionConfig;
+
import org.apache.geode.cache.util.CacheListenerAdapter;
import java.util.Map;
-import java.util.Properties;
-public class CreateRegionCacheListener
- extends CacheListenerAdapter<String,RegionAttributes>
- implements Declarable {
+public class CreateRegionCacheListener extends
CacheListenerAdapter<String,RegionConfig> implements Declarable {
- private Cache cache;
-
- public CreateRegionCacheListener() {
- this.cache = CacheFactory.getAnyInstance();
+ public void afterCreate(EntryEvent<String,RegionConfig> event) {
+ createRegion(event.getRegion().getCache(), event.getKey(),
event.getNewValue());
}
- public void afterCreate(EntryEvent<String,RegionAttributes> event) {
- createRegion(event.getKey(), event.getNewValue());
- }
-
- public void afterRegionCreate(RegionEvent<String,RegionAttributes> event) {
- Region<String,RegionAttributes> region = event.getRegion();
- for (Map.Entry<String,RegionAttributes> entry : region.entrySet()) {
- createRegion(entry.getKey(), entry.getValue());
+ public void afterRegionCreate(RegionEvent<String,RegionConfig> event) {
+ Cache cache = event.getRegion().getCache();
+ Region<String,RegionConfig> region = event.getRegion();
+ for (Map.Entry<String,RegionConfig> entry : region.entrySet()) {
+ createRegion(cache, entry.getKey(), entry.getValue());
}
}
-
- private void createRegion(String regionName, RegionAttributes attributes) {
- if (this.cache.getLogger().fineEnabled()) {
- this.cache.getLogger().fine(
- "CreateRegionCacheListener creating region named:
"
- + regionName + " with attributes: " + attributes);
+
+ private void createRegion(Cache cache, String regionName, RegionConfig
regionConfig) {
+ if (cache.getLogger().fineEnabled()) {
+ cache.getLogger().fine("CreateRegionCacheListener creating region
named=" + regionName + "; config: " + regionConfig);
}
- try {
- Region region = this.cache.createRegionFactory(attributes)
- .create(regionName);
- if (this.cache.getLogger().fineEnabled()) {
- this.cache.getLogger().fine("CreateRegionCacheListener created: "
- + region);
+ Region<Object, Object> region = cache.getRegion(regionConfig.getName());
+ if (region == null) {
+ try {
+ region =
cache.createRegionFactory(regionConfig.getType()).create(regionConfig.getName());
+ cache.getLogger().info("CreateRegionCacheListener created region=" +
region);
+ } catch (RegionExistsException e) {
+ cache.getLogger().info("CreateRegionCacheListener region already
exists region=" + region);
}
- System.out.println("CreateRegionCacheListener created: " + region);
- } catch (RegionExistsException e) {/* ignore */}
- }
-
- public void init(Properties p) {
+ } else {
+ cache.getLogger().info("CreateRegionCacheListener region already exists
region=" + region);
+ }
}
}
```
