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authorMarek Gradzki <mgradzki@cisco.com>2017-10-16 12:33:12 +0200
committerDave Wallace <dwallacelf@gmail.com>2017-10-16 14:18:09 +0000
commitc7fc97ad85993956a5e76c2ea69dbd90b34360ac (patch)
tree34dcf0074b5c6b1f95e742af767f28bc9986f507 /src/vpp-api/java/jvpp-common
parentf90813d64c4d1aee3a51609e85e632b1f9a37536 (diff)
jvpp: stop plugin intialization on first mismatch
Java bindings use get_message_id from jvpp-common to detect if messages known at compile time are avaliable at runtime. In case of missing entry, Java exception is propagated via JNI using (*env)->ThrowNew. But this function does not end code execution so, in order to prevent unexpected behaviour (e.g. calling vl_msg_api_set_handlers with id == 0), get_message_id caller should do it manually. Change-Id: I2edb5013fd3658dcdd77a867b5cdf62e559ee071 Signed-off-by: Marek Gradzki <mgradzki@cisco.com>
Diffstat (limited to 'src/vpp-api/java/jvpp-common')
-rw-r--r--src/vpp-api/java/jvpp-common/jvpp_common.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/src/vpp-api/java/jvpp-common/jvpp_common.c b/src/vpp-api/java/jvpp-common/jvpp_common.c
index c00298bfa81..2425607c582 100644
--- a/src/vpp-api/java/jvpp-common/jvpp_common.c
+++ b/src/vpp-api/java/jvpp-common/jvpp_common.c
@@ -83,11 +83,14 @@ 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) + 40);
+ char *msgBuf = clib_mem_alloc(strlen(key) + 70);
strcpy(msgBuf, "API mismatch detected: ");
strcat(msgBuf, key);
- strcat(msgBuf, " is missing");
- DEBUG_LOG("get_message_id : %s\n", msgBuf);
+ 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;