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authorDamjan Marion <damarion@cisco.com>2018-07-30 16:10:14 +0200
committerDave Barach <openvpp@barachs.net>2018-08-01 20:28:53 +0000
commitcc4a5e8089967f0c266e9c5ed319c38c111004cd (patch)
treebc290e03e12a0a02c3fc274740c96eef9e1707c6 /extras/japi/java/jvpp-common
parenta14c16674023bd6672ca49e3551c707702711050 (diff)
Move java api to extras/
Change-Id: Ibd5cbbdfb22a235442cddaebc9eae9a3c4e35ec9 Signed-off-by: Damjan Marion <damarion@cisco.com>
Diffstat (limited to 'extras/japi/java/jvpp-common')
-rw-r--r--extras/japi/java/jvpp-common/jvpp_common.c99
-rw-r--r--extras/japi/java/jvpp-common/jvpp_common.h74
2 files changed, 173 insertions, 0 deletions
diff --git a/extras/japi/java/jvpp-common/jvpp_common.c b/extras/japi/java/jvpp-common/jvpp_common.c
new file mode 100644
index 00000000000..2425607c582
--- /dev/null
+++ b/extras/japi/java/jvpp-common/jvpp_common.c
@@ -0,0 +1,99 @@
+/*
+ * Copyright (c) 2016 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.
+ */
+#define _GNU_SOURCE /* for strcasestr(3) */
+
+#include <vnet/api_errno.h>
+#include "jvpp_common.h"
+
+#ifndef JVPP_DEBUG
+#define JVPP_DEBUG 0
+#endif
+
+#if JVPP_DEBUG == 1
+#define DEBUG_LOG(...) clib_warning(__VA_ARGS__)
+#else
+#define DEBUG_LOG(...)
+#endif
+
+#define _(error,errorCode,msg) \
+if (errorCode == code) \
+ message = msg; \
+else
+
+#define get_error_message(errno) \
+int code = errno; \
+foreach_vnet_api_error \
+ message = "Reason unknown";
+
+/* shared jvpp main structure */
+jvpp_main_t jvpp_main __attribute__((aligned (64)));
+
+void call_on_error(const char* callName, int contextId, int retval,
+ jclass callbackClass, jobject callbackObject,
+ jclass callbackExceptionClass) {
+ DEBUG_LOG("\nCallOnError : callback=%s, retval=%d, context=%d\n", callName,
+ clib_net_to_host_u32(retval), clib_net_to_host_u32(context));
+ JNIEnv *env = jvpp_main.jenv;
+ if (!callbackClass) {
+ DEBUG_LOG("CallOnError : jm->callbackClass is null!\n");
+ return;
+ }
+ jmethodID excConstructor = (*env)->GetMethodID(env, callbackExceptionClass,
+ "<init>", "(Ljava/lang/String;Ljava/lang/String;II)V");
+ if (!excConstructor) {
+ DEBUG_LOG("CallOnError : excConstructor is null!\n");
+ return;
+ }
+ jmethodID callbackExcMethod = (*env)->GetMethodID(env, callbackClass,
+ "onError", "(Lio/fd/vpp/jvpp/VppCallbackException;)V");
+ if (!callbackExcMethod) {
+ DEBUG_LOG("CallOnError : callbackExcMethod is null!\n");
+ return;
+ }
+
+ char *message;
+ get_error_message(clib_net_to_host_u32(retval));
+ jobject excObject = (*env)->NewObject(env, callbackExceptionClass,
+ excConstructor, (*env)->NewStringUTF(env, callName),
+ (*env)->NewStringUTF(env, message),
+ clib_net_to_host_u32(contextId), clib_net_to_host_u32(retval));
+ if (!excObject) {
+ DEBUG_LOG("CallOnError : excObject is null!\n");
+ return;
+ }
+
+ (*env)->CallVoidMethod(env, callbackObject, callbackExcMethod, excObject);
+ DEBUG_LOG("CallOnError : Response sent\n");
+}
+#undef _
+
+u32 get_message_id(JNIEnv *env, const char *key) {
+ uword *p = hash_get(jvpp_main.messages_hash, key);
+ if (!p) {
+ jclass exClass = (*env)->FindClass(env, "java/lang/IllegalStateException");
+ char *msgBuf = clib_mem_alloc(strlen(key) + 70);
+ strcpy(msgBuf, "API mismatch detected: ");
+ strcat(msgBuf, key);
+ strcat(msgBuf, " is missing in global name_crc hash table.");
+ DEBUG_LOG("%s", msgBuf);
+ DEBUG_LOG("Possible reasons:");
+ DEBUG_LOG("1) incompatible VPP version used");
+ DEBUG_LOG("2) message present in JSON file but not in global name_crc table");
+ (*env)->ThrowNew(env, exClass, msgBuf);
+ clib_mem_free(msgBuf);
+ return 0;
+ }
+ return (u32) p[0];
+}
diff --git a/extras/japi/java/jvpp-common/jvpp_common.h b/extras/japi/java/jvpp-common/jvpp_common.h
new file mode 100644
index 00000000000..14027a96f78
--- /dev/null
+++ b/extras/japi/java/jvpp-common/jvpp_common.h
@@ -0,0 +1,74 @@
+/*
+ * Copyright (c) 2016 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.
+ */
+#ifndef __included_jvpp_common_h__
+#define __included_jvpp_common_h__
+//
+#include <vppinfra/types.h>
+#include <vlibapi/api.h>
+#include <vlibmemory/api.h>
+#include <jni.h>
+
+typedef struct {
+ /* Unique identifier used for matching replays with requests */
+ volatile u32 context_id;
+
+ /* Spinlock */
+ volatile u32 lock;
+ u32 tag;
+
+ /* JNI Native Method Interface pointer for message handlers */
+ JNIEnv *jenv;
+
+ /* JNI Invoke Interface pointer for attachment of rx thread to java thread */
+ JavaVM *jvm;
+
+ /* Convenience */
+ svm_queue_t * vl_input_queue;
+ u32 my_client_index;
+ uword *messages_hash;
+} jvpp_main_t;
+
+extern jvpp_main_t jvpp_main __attribute__((aligned (64)));
+
+static_always_inline u32 vppjni_get_context_id(jvpp_main_t * jm) {
+ return __sync_add_and_fetch(&jm->context_id, 1);
+}
+
+static_always_inline void vppjni_lock(jvpp_main_t * jm, u32 tag) {
+ while (__sync_lock_test_and_set(&jm->lock, 1))
+ ;
+ jm->tag = tag;
+}
+
+static_always_inline void vppjni_unlock(jvpp_main_t * jm) {
+ jm->tag = 0;
+ CLIB_MEMORY_BARRIER();
+ jm->lock = 0;
+}
+
+/**
+ * Calls onError callback on callbackObject reference. Passes instance of callbackExceptionClass as parameter.
+ */
+void call_on_error(const char* callName, int contextId, int retval,
+ jclass callbackClass, jobject callbackObject,
+ jclass callbackExceptionClass);
+
+/**
+ * Retrieves message id based on message name and crc (key format: name_crc).
+ * Throws java/lang/IllegalStateException on failure.
+ */
+u32 get_message_id(JNIEnv *env, const char* key);
+
+#endif /* __included_jvpp_common_h__ */