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/*
* Copyright (c) 2019 Cisco and/or its affiliates.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package io.fd.jvpp.stats;
import io.fd.jvpp.JVppRegistry;
import io.fd.jvpp.VppConnection;
import io.fd.jvpp.VppInvocationException;
import io.fd.jvpp.callback.JVppCallback;
import io.fd.jvpp.dto.ControlPing;
import io.fd.jvpp.dto.JVppRequest;
import java.io.IOException;
import java.io.InputStream;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.StandardCopyOption;
import java.nio.file.attribute.PosixFilePermission;
import java.nio.file.attribute.PosixFilePermissions;
import java.util.Set;
import java.util.logging.Logger;
public class JVppStatsImpl implements io.fd.jvpp.stats.JVppStats {
private final static Logger LOG = Logger.getLogger(JVppStatsImpl.class.getName());
private static final java.lang.String LIBNAME = "libjvpp_stats.so";
static {
try {
loadLibrary();
} catch (Exception e) {
LOG.severe("Can't find jvpp jni library: " + LIBNAME);
throw new ExceptionInInitializerError(e);
}
}
private VppConnection connection;
private JVppRegistry registry;
private static void loadStream(final InputStream is) throws IOException {
final Set<PosixFilePermission> perms = PosixFilePermissions.fromString("rwxr-x---");
final Path p = Files.createTempFile(LIBNAME, null, PosixFilePermissions.asFileAttribute(perms));
try {
Files.copy(is, p, StandardCopyOption.REPLACE_EXISTING);
try {
Runtime.getRuntime().load(p.toString());
} catch (UnsatisfiedLinkError e) {
throw new IOException("Failed to load library " + p, e);
}
} finally {
try {
Files.deleteIfExists(p);
} catch (IOException e) {
}
}
}
private static void loadLibrary() throws IOException {
try (final InputStream is = JVppStatsImpl.class.getResourceAsStream('/' + LIBNAME)) {
if (is == null) {
throw new IOException("Failed to open library resource " + LIBNAME);
}
loadStream(is);
}
}
private static native void init0(final JVppCallback callback, final long queueAddress, final int clientIndex);
private static native int interfaceStatisticsDump0() throws io.fd.jvpp.VppInvocationException;
private static native void close0();
@Override
public int send(final JVppRequest request) throws VppInvocationException {
return request.send(this);
}
@Override
public void init(final JVppRegistry registry, final JVppCallback callback, final long queueAddress,
final int clientIndex) {
this.registry = java.util.Objects.requireNonNull(registry, "registry should not be null");
this.connection = java.util.Objects.requireNonNull(registry.getConnection(), "connection should not be null");
connection.checkActive();
init0(callback, queueAddress, clientIndex);
}
@Override
public int controlPing(final ControlPing controlPing) {
return 1;
}
@Override
public int interfaceStatisticsDump() throws VppInvocationException {
connection.checkActive();
LOG.fine("Sending interfaceStatisticsDump event message");
int result = interfaceStatisticsDump0();
if (result < 0) {
throw new io.fd.jvpp.VppInvocationException("interfaceStatisticsDump", result);
}
return result;
}
@Override
public void close() {
close0();
}
}
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