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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package ai.vespa.onnxruntime;
import org.osgi.framework.BundleActivator;
import org.osgi.framework.BundleContext;
import java.util.logging.Logger;
/**
* @author arnej
* Loads native libraries when the bundle is activated.
* Use system properties to ensure onnxruntime won't try
* to load them itself.
**/
public class OnnxBundleActivator implements BundleActivator {
private static final String ONNX_PREFIX = "onnxruntime.native.";
private static final String PATH_SUFFIX = "path";
private static final String SKIP_SUFFIX = ".skip";
private static final String SKIP_VALUE = "true";
private static final String[] LIBRARY_NAMES = { "onnxruntime", "onnxruntime4j_jni" };
private static final Logger log = Logger.getLogger(OnnxBundleActivator.class.getName());
@Override
public void start(BundleContext ctx) {
String skipAll = OnnxBundleActivator.class.getSimpleName() + SKIP_SUFFIX;
if (SKIP_VALUE.equals(System.getProperty(skipAll))) {
log.info("skip loading of native libraries");
return;
}
System.setProperty(ONNX_PREFIX + PATH_SUFFIX, "/opt/vespa-deps/lib64");
for (String libName : LIBRARY_NAMES) {
String skipProp = ONNX_PREFIX + libName + SKIP_SUFFIX;
if (SKIP_VALUE.equals(System.getProperty(skipProp))) {
log.fine("already loaded native library "+libName+", skipping");
} else {
log.fine("loading native library: "+libName);
try {
System.loadLibrary(libName);
// this property also signals onnxruntime to skip loading:
System.setProperty(skipProp, SKIP_VALUE);
log.fine("loaded native library OK: "+libName);
} catch (Exception|UnsatisfiedLinkError e) {
log.info("Could not load native library '"+libName+"' because: "+e.getMessage());
}
}
}
}
@Override
public void stop(BundleContext ctx) {
// not sure how to test that loading and unloading multiple times actually works,
// but this should in theory do the necessary thing.
for (String libName : LIBRARY_NAMES) {
String skipProp = ONNX_PREFIX + libName + SKIP_SUFFIX;
if (SKIP_VALUE.equals(System.getProperty(skipProp))) {
log.fine("will unload native library: "+libName);
}
System.clearProperty(skipProp);
}
}
}
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