1 files changed, 121 insertions, 0 deletions
diff --git a/java/jvpp-stats/io/fd/jvpp/stats/JVppStatsImpl.java b/java/jvpp-stats/io/fd/jvpp/stats/JVppStatsImpl.java
new file mode 100644
index 0000000..fdee289
--- /dev/null
+++ b/java/jvpp-stats/io/fd/jvpp/stats/JVppStatsImpl.java
@@ -0,0 +1,121 @@
+/*
+ * 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();
+    }
+}