From 21f3798c7938d070725816214368394e6a16bd04 Mon Sep 17 00:00:00 2001 From: Michal Cmarada Date: Wed, 23 Jan 2019 09:05:07 +0100 Subject: initial commit - migrates source code from VPP code base - modifies cmake configuration - adds cpack configuration for deb and rpm packaging - adds documentation Change-Id: Ib6a39030f6c47c8ae654fcb886c618e159fb63b4 Signed-off-by: Michal Cmarada --- java/jvpp/gen/jvppgen/jvpp_impl_gen.py | 173 +++++++++++++++++++++++++++++++++ 1 file changed, 173 insertions(+) create mode 100755 java/jvpp/gen/jvppgen/jvpp_impl_gen.py (limited to 'java/jvpp/gen/jvppgen/jvpp_impl_gen.py') diff --git a/java/jvpp/gen/jvppgen/jvpp_impl_gen.py b/java/jvpp/gen/jvppgen/jvpp_impl_gen.py new file mode 100755 index 0000000..376952b --- /dev/null +++ b/java/jvpp/gen/jvppgen/jvpp_impl_gen.py @@ -0,0 +1,173 @@ +#!/usr/bin/env python2 +# +# Copyright (c) 2016,2018 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. +# +from string import Template + +from jvpp_model import is_request, is_dump, is_event + + +def generate_java_impl(work_dir, model, logger): + logger.debug("Generating JVpp implementation for %s" % model.json_api_files) + messages = filter(_jvpp_impl_filter, model.messages) + plugin_package = model.plugin_package + methods = [] + for msg in messages: + if msg.has_fields: + methods.append(_JVPP_IMPL_METHOD_TEMPLATE.substitute( + name=msg.java_name_lower, + plugin_package=plugin_package, + type=msg.java_name_upper)) + else: + methods.append(_JVPP_IMPL_NO_ARG_METHOD_TEMPLATE.substitute( + name=msg.java_name_lower, + type=msg.java_name_upper)) + + plugin_name = model.plugin_java_name + jvpp_impl = _JVPP_IMPL_TEMPLATE.substitute( + plugin_package=plugin_package, + json_filename=model.json_api_files, + plugin_name=model.plugin_java_name, + plugin_name_underscore=model.plugin_name, + methods="\n".join(methods)) + + with open("%s/JVpp%sImpl.java" % (work_dir, plugin_name), "w") as f: + f.write(jvpp_impl) + + +def _jvpp_impl_filter(msg): + return is_request(msg) or is_dump(msg) or is_event(msg) + + +_JVPP_IMPL_TEMPLATE = Template("""package $plugin_package; + +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; +import java.util.logging.Level; +import io.fd.vpp.jvpp.callback.JVppCallback; +import io.fd.vpp.jvpp.VppConnection; +import io.fd.vpp.jvpp.JVppRegistry; + +/** + *

Default implementation of JVpp interface. + *
It was generated by jvpp_impl_gen.py based on $json_filename. + *
(python representation of api file generated by vppapigen) + */ +public final class JVpp${plugin_name}Impl implements $plugin_package.JVpp${plugin_name} { + + private final static Logger LOG = Logger.getLogger(JVpp${plugin_name}Impl.class.getName()); + private static final java.lang.String LIBNAME = "libjvpp_${plugin_name_underscore}.so"; + + // FIXME using NativeLibraryLoader makes load fail could not find (WantInterfaceEventsReply). + static { + try { + loadLibrary(); + } catch (Exception e) { + LOG.severe("Can't find jvpp jni library: " + LIBNAME); + throw new ExceptionInInitializerError(e); + } + } + + private static void loadStream(final InputStream is) throws IOException { + final Set 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 = JVpp${plugin_name}Impl.class.getResourceAsStream('/' + LIBNAME)) { + if (is == null) { + throw new IOException("Failed to open library resource " + LIBNAME); + } + loadStream(is); + } + } + + private VppConnection connection; + private JVppRegistry registry; + + private static native void init0(final JVppCallback callback, final long queueAddress, final int clientIndex); + @Override + public void init(final JVppRegistry registry, final JVppCallback callback, final long queueAddress, final int clientIndex) { + this.registry = java.util.Objects.requireNonNull(registry, "registry should not be null"); + this.connection = java.util.Objects.requireNonNull(registry.getConnection(), "connection should not be null"); + connection.checkActive(); + init0(callback, queueAddress, clientIndex); + } + + private static native void close0(); + @Override + public void close() { + close0(); + } + + @Override + public int send(io.fd.vpp.jvpp.dto.JVppRequest request) throws io.fd.vpp.jvpp.VppInvocationException { + return request.send(this); + } + + @Override + public final int controlPing(final io.fd.vpp.jvpp.dto.ControlPing controlPing) throws io.fd.vpp.jvpp.VppInvocationException { + return registry.controlPing(JVpp${plugin_name}Impl.class); + } +$methods +} +""") + +_JVPP_IMPL_METHOD_TEMPLATE = Template(""" + private static native int ${name}0($plugin_package.dto.$type request); + public final int $name($plugin_package.dto.$type request) throws io.fd.vpp.jvpp.VppInvocationException { + java.util.Objects.requireNonNull(request, "Null request object"); + connection.checkActive(); + if (LOG.isLoggable(Level.FINE)) { + LOG.fine(java.lang.String.format("Sending $type event message: %s", request)); + } + int result=${name}0(request); + if (result<0){ + throw new io.fd.vpp.jvpp.VppInvocationException("${name}", result); + } + return result; + }""") + +_JVPP_IMPL_NO_ARG_METHOD_TEMPLATE = Template(""" + private static native int ${name}0() throws io.fd.vpp.jvpp.VppInvocationException; + public final int $name() throws io.fd.vpp.jvpp.VppInvocationException { + connection.checkActive(); + LOG.fine("Sending $type event message"); + int result=${name}0(); + if(result<0){ + throw new io.fd.vpp.jvpp.VppInvocationException("${name}", result); + } + return result; + }""") -- cgit 1.2.3-korg