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Merged
bnouwt merged 1 commit into from
Dec 19, 2025
Merged

Add configuration properties. #778

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45 changes: 35 additions & 10 deletions ...nector-api/src/main/java/eu/knowledge/engine/smartconnector/api/SmartConnectorConfig.java
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Expand Up @@ -63,29 +63,34 @@ public class SmartConnectorConfig {
* Key to configure if a KER should use the EDC functionality or not.
*/
public static final String CONF_KEY_KE_RUNTIME_USE_EDC = "ke.runtime.use.edc";

/**
* Key to configure where a KER can reach the protocol API of its own control plane if using EDC.
* Key to configure where a KER can reach the protocol API of its own control
* plane if using EDC.
*/
public static final String CONF_KEY_KE_EDC_PROTOCOL_URL = "ke.edc.protocol.url";

/**
* Key to configure where a KER can reach the management API of its own control plane if using EDC.
* Key to configure where a KER can reach the management API of its own control
* plane if using EDC.
*/
public static final String CONF_KEY_KE_EDC_MANAGEMENT_URL = "ke.edc.management.url";

/**
* Key to configure where a KER can reach its data plane control API if using EDC.
* Key to configure where a KER can reach its data plane control API if using
* EDC.
*/
public static final String CONF_KEY_KE_EDC_DATAPLANE_CONTROL_URL = "ke.edc.dataplane.control.url";

/**
* Key to configure where a KER can reach its data plane public API if using EDC.
* Key to configure where a KER can reach its data plane public API if using
* EDC.
*/
public static final String CONF_KEY_KE_EDC_DATAPLANE_PUBLIC_URL = "ke.edc.dataplane.public.url";

/**
* Key to configure the URL where a KER can do token validation through the control plane if using EDC.
* Key to configure the URL where a KER can do token validation through the
* control plane if using EDC.
*/
public static final String CONF_KEY_KE_EDC_TOKEN_VALIDATION_ENDPOINT = "ke.edc.token.validation.endpoint";

Expand Down Expand Up @@ -120,6 +125,26 @@ public class SmartConnectorConfig {
*/
public static final String CONF_KEY_KE_DOMAIN_KNOWLEDGE_PATH = "ke.domain.knowledge.path";

/**
* Configure the maximum number of entries in the node cache that is being used
* to speed up converting from graph patterns and bindingsets to RDF. See:
* {@code eu.knowledge.engine.smartconnector.impl.Util.nodeCache}
*
*/
public static final String CONF_KEY_KE_CACHE_NODE_SIZE = "ke.cache.node.size";

/**
* Configure the number of minutes of being idle (not accessed) after which a
* cache entry can be evicted from cache.
*/
public static final String CONF_KEY_KE_CACHE_NODE_EXPIRYMINUTES = "ke.cache.node.expiryminutes";

/**
* The main thread pool of the Knowledge Engine Runtime that is used to, among
* other things, deliver messages.
*/
public static final String CONF_KEY_KE_THREADPOOL_SIZE = "ke.threadpool.size";

/**
* Convert the configuration reasoner levels to matching strategies used in the
* reasoner code.
Expand Down
13 changes: 11 additions & 2 deletions smart-connector/src/main/java/eu/knowledge/engine/smartconnector/impl/Util.java
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Expand Up @@ -22,6 +22,8 @@
import org.apache.jena.sparql.sse.SSE;
import org.apache.jena.sparql.syntax.ElementPathBlock;
import org.apache.jena.sparql.util.FmtUtils;
import org.eclipse.microprofile.config.Config;
import org.eclipse.microprofile.config.ConfigProvider;
import org.ehcache.config.builders.CacheConfigurationBuilder;
import org.ehcache.config.builders.ExpiryPolicyBuilder;
import org.ehcache.config.builders.ResourcePoolsBuilder;
Expand All @@ -33,6 +35,7 @@
import eu.knowledge.engine.smartconnector.api.Binding;
import eu.knowledge.engine.smartconnector.api.BindingSet;
import eu.knowledge.engine.smartconnector.api.GraphPattern;
import eu.knowledge.engine.smartconnector.api.SmartConnectorConfig;

public class Util {
private static final Logger LOG = LoggerFactory.getLogger(Util.class);
Expand All @@ -41,9 +44,15 @@ public class Util {
CachingProvider cachingProvider = Caching.getCachingProvider();
CacheManager cacheManager = cachingProvider.getCacheManager();

long cacheSize = Long.parseLong(
ConfigProvider.getConfig().getConfigValue(SmartConnectorConfig.CONF_KEY_KE_CACHE_NODE_SIZE).getValue());

long timeInMinutes = Long.parseLong(ConfigProvider.getConfig()
.getConfigValue(SmartConnectorConfig.CONF_KEY_KE_CACHE_NODE_EXPIRYMINUTES).getValue());

CacheConfigurationBuilder<String, Node> ehConfig = CacheConfigurationBuilder
.newCacheConfigurationBuilder(String.class, Node.class, ResourcePoolsBuilder.heap(500_000))
.withExpiry(ExpiryPolicyBuilder.timeToIdleExpiration(java.time.Duration.ofMinutes(10)));
.newCacheConfigurationBuilder(String.class, Node.class, ResourcePoolsBuilder.heap(cacheSize))
.withExpiry(ExpiryPolicyBuilder.timeToIdleExpiration(java.time.Duration.ofMinutes(timeInMinutes)));

Configuration<String, Node> config = Eh107Configuration.fromEhcacheCacheConfiguration(ehConfig);
nodeCache = cacheManager.createCache("nodeCache", config);
Expand Down
10 changes: 6 additions & 4 deletions smart-connector/src/main/java/eu/knowledge/engine/smartconnector/runtime/KeRuntime.java
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Expand Up @@ -82,7 +82,9 @@ public class KeRuntime {

// we want to make sure that this threadpool does not keep the JVM alive. So we
// set the daemon to true.
executorService = Executors.newScheduledThreadPool(12, new ThreadFactory() {
int nrOfThreads = Integer.parseInt(
ConfigProvider.getConfig().getConfigValue(SmartConnectorConfig.CONF_KEY_KE_THREADPOOL_SIZE).getValue());
executorService = Executors.newScheduledThreadPool(nrOfThreads, new ThreadFactory() {
@Override
public Thread newThread(Runnable r) {
Thread t = Executors.defaultThreadFactory().newThread(r);
Expand Down Expand Up @@ -130,11 +132,11 @@ public static MessageDispatcher getMessageDispatcher() {
.getConfigValue(SmartConnectorConfig.CONF_KEY_KE_RUNTIME_EXPOSED_URL);
URI myExposedUrl = new URI(exposedUrl.getValue());

ConfigValue useEdc = config
.getConfigValue(SmartConnectorConfig.CONF_KEY_KE_RUNTIME_USE_EDC);
ConfigValue useEdc = config.getConfigValue(SmartConnectorConfig.CONF_KEY_KE_RUNTIME_USE_EDC);
var myUseEdc = Boolean.parseBoolean(useEdc.getValue());

messageDispatcher = new MessageDispatcher(myPort, myExposedUrl, new URI(kdUrl.getValue()), myUseEdc);
messageDispatcher = new MessageDispatcher(myPort, myExposedUrl, new URI(kdUrl.getValue()),
myUseEdc);
}
} catch (NumberFormatException | URISyntaxException e) {
LOG.error("Could not parse configuration properties, cannot start Knowledge Engine", e);
Expand Down
3 changes: 3 additions & 0 deletions smart-connector/src/main/resources/META-INF/microprofile-config.properties
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Expand Up @@ -8,6 +8,9 @@ sc.validate.outgoing.bindings.wrt.incoming.bindings = true
ke.runtime.hostname = localhost
ke.reasoner.level = 2
ke.runtime.use.edc = false
ke.cache.node.size = 500000
ke.cache.node.expiryminutes = 10
ke.threadpool.size = 12

ke.edc.protocol.url =
ke.edc.management.url =
Expand Down