Spring/spring-boot-data-geode
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Add java.util.function.Predicate on Region to filter Regions on data import/export.

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Add protected getLogger() method returning a SLF4J Logger to log messages and events during data import/export operations.

Format source code.

Resolves gh-67.
This commit is contained in:
John Blum
2020-05-04 18:55:36 -07:00
parent 1b44a80830
commit 074fd7f1ed
2 changed files with 190 additions and 36 deletions
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67
spring-geode/src/main/java/org/springframework/geode/data/AbstractCacheDataImporterExporter.java
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@@ -23,6 +23,7 @@ import java.util.Collections;
import java.util.Objects;
import java.util.Optional;
import java.util.Set;
import java.util.function.Predicate;
import java.util.stream.Collectors;
import org.apache.geode.cache.Region;
@@ -38,6 +39,9 @@ import org.springframework.lang.Nullable;
import org.springframework.util.Assert;
import org.springframework.util.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Abstract base class implementing the {@link CacheDataExporter} and {@link CacheDataImporter} interface in order to
* simply import/export data operation implementations in a consistent way.
@@ -72,6 +76,25 @@ public abstract class AbstractCacheDataImporterExporter
private Environment environment;
private final Logger logger = LoggerFactory.getLogger(getClass());
private Predicate<Region<?, ?>> regionPredicate = newRegionPredicate();
/**
* Constructs a new instance of {@link Predicate} used to filter {@link Region Regions} on data import/export.
*
* The default {@link Predicate} accepts all {@link Region Regions}. Override the {@link #getRegionPredicate()}
* method to change the default behavior.
*
* @return a new instance of {@link Predicate} used to filter {@link Region Regions} on data import/export.
* @see org.apache.geode.cache.Region
* @see java.util.function.Predicate
* @see #getRegionPredicate()
*/
private Predicate<Region<?, ?>> newRegionPredicate() {
return region -> true;
}
/**
* Sets a reference to a {@link ApplicationContext} used by this data importer/exporter to perform its function.
*
@@ -153,6 +176,29 @@ public abstract class AbstractCacheDataImporterExporter
.orElseThrow(() -> newIllegalStateException("Environment was not configured"));
}
/**
* Return the configured {@link Logger} to log messages.
*
* @return the configured {@link Logger}.
* @see org.slf4j.Logger
*/
protected Logger getLogger() {
return this.logger;
}
/**
* Returns the configured {@link Predicate} used to filter {@link Region Regions} on data import/export.
*
* @return the configured {@link Predicate} used to filter {@link Region Regions} on data import/export.
* @see org.apache.geode.cache.Region
* @see java.util.function.Predicate
*/
protected @NonNull Predicate<Region<?, ?>> getRegionPredicate() {
return Optional.ofNullable(this.regionPredicate)
.orElseGet(this::newRegionPredicate);
}
/**
* Exports data contained in the given {@link Region}.
*
@@ -166,6 +212,7 @@ public abstract class AbstractCacheDataImporterExporter
Assert.notNull(region, "Region must not be null");
boolean exportEnabled = getEnvironment()
.filter(environment -> getRegionPredicate().test(region))
.filter(environment -> environment.getProperty(CACHE_DATA_EXPORT_ENABLED_PROPERTY_NAME, Boolean.class,
DEFAULT_CACHE_DATA_EXPORT_ENABLED))
.isPresent();
@@ -195,6 +242,7 @@ public abstract class AbstractCacheDataImporterExporter
Assert.notNull(region, "Region must not be null");
boolean importEnabled = getEnvironment()
.filter(environment -> getRegionPredicate().test(region))
.map(Environment::getActiveProfiles)
.map(CollectionUtils::asSet)
.map(this::getDefaultProfilesIfEmpty)
@@ -212,6 +260,15 @@ public abstract class AbstractCacheDataImporterExporter
return importEnabled ? doImportInto(region) : region;
}
/**
* Imports data into the given {@link Region}.
*
* @param region {@link Region} to import data into.
* @return the given {@link Region}.
* @see org.apache.geode.cache.Region
*/
protected abstract @NonNull Region doImportInto(@NonNull Region region);
@Nullable Set<String> getDefaultProfilesIfEmpty(@Nullable Set<String> activeProfiles) {
Set<String> resolvedProfiles = activeProfiles;
@@ -259,14 +316,4 @@ public abstract class AbstractCacheDataImporterExporter
boolean isNotSet(String value) {
return !StringUtils.hasText((value));
}
/**
* Imports data into the given {@link Region}.
*
* @param region {@link Region} to import data into.
* @return the given {@link Region}.
* @see org.apache.geode.cache.Region
*/
protected abstract @NonNull Region doImportInto(@NonNull Region region);
}