aplcache
Changes
pom.xml 5(+5 -0)
Details
pom.xml 5(+5 -0)
diff --git a/pom.xml b/pom.xml
index 5689d62..f67e940 100644
--- a/pom.xml
+++ b/pom.xml
@@ -33,6 +33,11 @@
<artifactId>JSONSerialiser</artifactId>
<version>1.0</version>
</dependency>
+ <dependency>
+ <groupId>br.ufrgs.inf.prosoft.cache</groupId>
+ <artifactId>Cache</artifactId>
+ <version>1.0</version>
+ </dependency>
</dependencies>
<build>
diff --git a/src/main/java/br/ufrgs/inf/prosoft/aplcache/caching/APLCache.java b/src/main/java/br/ufrgs/inf/prosoft/aplcache/caching/APLCache.java
index 30ae0c7..faf1573 100644
--- a/src/main/java/br/ufrgs/inf/prosoft/aplcache/caching/APLCache.java
+++ b/src/main/java/br/ufrgs/inf/prosoft/aplcache/caching/APLCache.java
@@ -5,6 +5,7 @@
*/
package br.ufrgs.inf.prosoft.aplcache.caching;
+import br.ufrgs.inf.prosoft.cache.MultiCache;
import br.ufrgs.inf.prosoft.jsonserialiser.JSONSerialiser;
import com.google.gson.JsonObject;
import com.google.gson.JsonParser;
@@ -16,6 +17,7 @@ import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
+import java.util.function.Supplier;
import java.util.logging.Level;
import java.util.logging.Logger;
import java.util.stream.Collectors;
@@ -24,13 +26,23 @@ import java.util.stream.Stream;
/**
*
* @author romulo
+ * @param <V>
*/
-public class APLCache {
+public class APLCache<V> {
private static final Logger LOGGER = Logger.getLogger(APLCache.class.getName());
private static String APLCACHE_CACHEABLE_PARAMETERS = System.getenv("APLCACHE_CACHEABLE_PARAMETERS");
private static final Map<String, Collection<String>> APLCACHE_METHOD_HAS_CACHEABLE_PARAMETERS = new HashMap<>();
private static final String APLCACHE_LOG = System.getenv("APLCACHE_LOG");
+ private final MultiCache<String, V> multiCache;
+
+ public APLCache() {
+ this.multiCache = new MultiCache<>();
+ }
+
+ public APLCache(String name) {
+ this.multiCache = new MultiCache<>(name);
+ }
private static void loadCacheableParameters() {
if (APLCACHE_CACHEABLE_PARAMETERS == null) {
@@ -94,8 +106,62 @@ public class APLCache {
log("uncacheable " + method + " : " + serialisedParameters);
return false;
}
-
- private static void log(String message) {
+
+ public static boolean isCacheable(String method, String parameters) {
+ loadCacheableParameters();
+ if (APLCACHE_METHOD_HAS_CACHEABLE_PARAMETERS.isEmpty()) {
+ LOGGER.log(Level.WARNING, "no method is cacheable");
+ return false;
+ }
+ Collection<String> cacheableParameters = APLCACHE_METHOD_HAS_CACHEABLE_PARAMETERS.get(method);
+ if (cacheableParameters == null) {
+ LOGGER.log(Level.WARNING, "method not cacheable: {0}", method);
+ return false;
+ }
+ if (cacheableParameters.contains(parameters)) {
+ return true;
+ }
+ log("uncacheable " + method + " : " + parameters);
+ return false;
+ }
+
+ public V computeIfAbsent(Thread currentThread, Object[] parameters, Supplier<V> supplier, long timeToLive) {
+ StackTraceElement[] stackTrace = currentThread.getStackTrace();
+ StackTraceElement stackTraceElement;
+ try {
+ stackTraceElement = stackTrace[2];
+ } catch (ArrayIndexOutOfBoundsException ex) {
+ stackTraceElement = stackTrace[0];
+ }
+ String methodName = stackTraceElement.getClassName() + "." + stackTraceElement.getMethodName();
+
+ String serialisedParameters = Stream.of(parameters).map(JSONSerialiser::serialise)
+ .collect(Collectors.joining(",", "[", "]"));
+ if (isCacheable(methodName, serialisedParameters)) {
+ return this.multiCache.computeIfAbsent(serialisedParameters, supplier, timeToLive);
+ }
+ return supplier.get();
+ }
+
+ public V computeIfAbsent(Thread currentThread, Object[] parameters, Supplier<V> supplier) {
+ StackTraceElement[] stackTrace = currentThread.getStackTrace();
+ StackTraceElement stackTraceElement;
+ try {
+ stackTraceElement = stackTrace[2];
+ } catch (ArrayIndexOutOfBoundsException ex) {
+ stackTraceElement = stackTrace[0];
+ }
+ String methodName = stackTraceElement.getClassName() + "." + stackTraceElement.getMethodName();
+
+ String serialisedParameters = Stream.of(parameters).map(JSONSerialiser::serialise)
+ .collect(Collectors.joining(",", "[", "]"));
+ if (isCacheable(methodName, serialisedParameters)) {
+ return this.multiCache.computeIfAbsent(serialisedParameters, supplier);
+ }
+ return supplier.get();
+ }
+
+ private static void log(String message) {
if (APLCACHE_LOG == null) {
return;
}