Revert "Revert "Implementation of jvpp-stats plugin""

This reverts commit f0ce8769561e1b487ab7b909b23510604bebbdc9.

Change-Id: I7bd7ac19b58a1b78e6e449c250861ee9db63e72a
Signed-off-by: Michal Cmarada <mcmarada@cisco.com>

4 files changed, 209 insertions, 0 deletions

diff --git a/java/jvpp-stats/io/fd/jvpp/stats/JVppClientStatsImpl.java b/java/jvpp-stats/io/fd/jvpp/stats/JVppClientStatsImpl.java
new file mode 100644
index 0000000..821373a
--- /dev/null
+++ b/java/jvpp-stats/io/fd/jvpp/stats/JVppClientStatsImpl.java
@@ -0,0 +1,50 @@
+/*
+ * Copyright (c) 2019 PANTHEON.tech.
+ *
+ * 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 static io.fd.jvpp.NativeLibraryLoader.loadLibrary;
+import static java.lang.String.format;
+
+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.Level;
+import java.util.logging.Logger;
+
+import io.fd.jvpp.stats.dto.InterfaceStatistics;
+
+public class JVppClientStatsImpl {
+
+    private static final Logger LOG = Logger.getLogger(JVppClientStatsImpl.class.getName());
+
+    static {
+            final String libName = "libjvpp_stats.so";
+            try {
+                loadLibrary(libName, JVppClientStatsImpl.class);
+            } catch (IOException e) {
+                LOG.log(Level.SEVERE, format("Can't find vpp jni library: %s", libName), e);
+                throw new ExceptionInInitializerError(e);
+            }
+        }
+
+    public static native InterfaceStatistics[] interfaceStatisticsDump();
+}
diff --git a/java/jvpp-stats/io/fd/jvpp/stats/dto/InterfaceStatistics.java b/java/jvpp-stats/io/fd/jvpp/stats/dto/InterfaceStatistics.java
new file mode 100644
index 0000000..49486a1
--- /dev/null
+++ b/java/jvpp-stats/io/fd/jvpp/stats/dto/InterfaceStatistics.java
@@ -0,0 +1,111 @@
+/*
+ * Copyright (c) 2019 PANTHEON.tech.
+ *
+ * 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.dto;
+
+public class InterfaceStatistics {
+
+    private int swIfIndex;
+    private int outErrors;
+    private int outMulticastPkts;
+    private int outUnicastPkts;
+    private int outBroadcastPkts;
+    private int outBytes;
+    private int inErrors;
+    private int inMulticastPkts;
+    private int inUnicastPkts;
+    private int inBroadcastPkts;
+    private int inBytes;
+
+    public InterfaceStatistics(final int swIfIndex, final int outErrors, final int outMulticastPkts,
+                               final int outUnicastPkts,
+                               final int outBroadcastPkts, final int outBytes, final int inErrors,
+                               final int inMulticastPkts, final int inUnicastPkts,
+                               final int inBroadcastPkts, final int inBytes) {
+        this.swIfIndex = swIfIndex;
+        this.outErrors = outErrors;
+        this.outMulticastPkts = outMulticastPkts;
+        this.outUnicastPkts = outUnicastPkts;
+        this.outBroadcastPkts = outBroadcastPkts;
+        this.outBytes = outBytes;
+        this.inErrors = inErrors;
+        this.inMulticastPkts = inMulticastPkts;
+        this.inUnicastPkts = inUnicastPkts;
+        this.inBroadcastPkts = inBroadcastPkts;
+        this.inBytes = inBytes;
+    }
+
+    public int getSwIfIndex() {
+        return swIfIndex;
+    }
+
+    public int getOutErrors() {
+        return outErrors;
+    }
+
+    public int getOutMulticastPkts() {
+        return outMulticastPkts;
+    }
+
+    public int getOutUnicastPkts() {
+        return outUnicastPkts;
+    }
+
+    public int getOutBroadcastPkts() {
+        return outBroadcastPkts;
+    }
+
+    public int getOutBytes() {
+        return outBytes;
+    }
+
+    public int getInErrors() {
+        return inErrors;
+    }
+
+    public int getInMulticastPkts() {
+        return inMulticastPkts;
+    }
+
+    public int getInUnicastPkts() {
+        return inUnicastPkts;
+    }
+
+    public int getInBroadcastPkts() {
+        return inBroadcastPkts;
+    }
+
+    public int getInBytes() {
+        return inBytes;
+    }
+
+    @java.lang.Override
+    public java.lang.String toString() {
+        return "InterfaceStatistics{" +
+                "swIfIndex=" + swIfIndex +
+                ", outErrors=" + outErrors +
+                ", outMulticastPkts=" + outMulticastPkts +
+                ", outUnicastPkts=" + outUnicastPkts +
+                ", outBroadcastPkts=" + outBroadcastPkts +
+                ", outBytes=" + outBytes +
+                ", inErrors=" + inErrors +
+                ", inMulticastPkts=" + inMulticastPkts +
+                ", inUnicastPkts=" + inUnicastPkts +
+                ", inBroadcastPkts=" + inBroadcastPkts +
+                ", inBytes=" + inBytes +
+                '}';
+    }
+}
diff --git a/java/jvpp-stats/io/fd/jvpp/stats/test/JvppStatsApiTest.java b/java/jvpp-stats/io/fd/jvpp/stats/test/JvppStatsApiTest.java
new file mode 100644
index 0000000..5077509
--- /dev/null
+++ b/java/jvpp-stats/io/fd/jvpp/stats/test/JvppStatsApiTest.java
@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2019 PANTHEON.tech.
+ *
+ * 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.test;
+
+import io.fd.jvpp.stats.JVppClientStatsImpl;
+import io.fd.jvpp.stats.dto.InterfaceStatistics;
+
+class JvppStatsApiTest {
+
+    public static void main(String[] args) {
+
+        JVppClientStatsImpl myImpl = new JVppClientStatsImpl();
+        InterfaceStatistics[] statistics = myImpl.interfaceStatisticsDump();
+
+        if (statistics == null) {
+            System.out.println("in java - dump was null");
+            return;
+        }
+
+        if (statistics.length == 0) {
+            System.out.println("in java - dump was empty");
+            return;
+        }
+
+        for (int i = 0; i < statistics.length; i++) {
+            System.out.println(statistics[i].toString());
+        }
+    }
+}
diff --git a/java/jvpp-stats/io/fd/jvpp/stats/test/Readme.txt b/java/jvpp-stats/io/fd/jvpp/stats/test/Readme.txt
new file mode 100644
index 0000000..cda9ed2
--- /dev/null
+++ b/java/jvpp-stats/io/fd/jvpp/stats/test/Readme.txt
@@ -0,0 +1,5 @@
+This package contains basic tests for jvpp. To run the tests:
+
+- Make sure VPP is running
+- From JVPP's java/ folder execute:
+  - sudo java -cp jvpp-registry-19.04.jar:jvpp-stats-19.04.jar io.fd.jvpp.stats.test.JvppStatsApiTest