2 * SPDX-License-Identifier: LGPL-2.1-only
4 * Copyright (C) 2016-2022 EfficiOS Inc.
5 * Copyright (C) 2016 Alexandre Montplaisir <alexmonthy@efficios.com>
6 * Copyright (C) 2011-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
10 #include "org_lttng_ust_agent_log4j2_LttngLog4j2Api.h"
11 #include "lttng_ust_log4j_tp.h"
12 #include "../common/lttng_ust_context.h"
15 * Those are an exact map from the class org.apache.log4j.Level.
17 enum loglevel_log4j1
{
18 LOGLEVEL_LOG4J1_OFF
= INT32_MAX
,
19 LOGLEVEL_LOG4J1_FATAL
= 50000,
20 LOGLEVEL_LOG4J1_ERROR
= 40000,
21 LOGLEVEL_LOG4J1_WARN
= 30000,
22 LOGLEVEL_LOG4J1_INFO
= 20000,
23 LOGLEVEL_LOG4J1_DEBUG
= 10000,
24 LOGLEVEL_LOG4J1_TRACE
= 5000,
25 LOGLEVEL_LOG4J1_ALL
= INT32_MIN
,
29 * Those are an exact map from the class
30 * org.apache.logging.log4j.spi.StandardLevel.
32 enum loglevel_log4j2
{
33 LOGLEVEL_LOG4J2_OFF
= 0,
34 LOGLEVEL_LOG4J2_FATAL
= 100,
35 LOGLEVEL_LOG4J2_ERROR
= 200,
36 LOGLEVEL_LOG4J2_WARN
= 300,
37 LOGLEVEL_LOG4J2_INFO
= 400,
38 LOGLEVEL_LOG4J2_DEBUG
= 500,
39 LOGLEVEL_LOG4J2_TRACE
= 600,
40 LOGLEVEL_LOG4J2_ALL
= INT32_MAX
,
44 * Convert a custom Log4j 2.x loglevel to its equivalent 1.x standard loglevel.
46 static jint
loglevel_custom_2x_to_standard_1x(jint loglevel
)
48 if (loglevel
<= LOGLEVEL_LOG4J2_OFF
) {
49 return LOGLEVEL_LOG4J1_OFF
;
50 } else if (loglevel
<= LOGLEVEL_LOG4J2_FATAL
) {
51 return LOGLEVEL_LOG4J1_FATAL
;
52 } else if (loglevel
<= LOGLEVEL_LOG4J2_ERROR
) {
53 return LOGLEVEL_LOG4J1_ERROR
;
54 } else if (loglevel
<= LOGLEVEL_LOG4J2_WARN
) {
55 return LOGLEVEL_LOG4J1_WARN
;
56 } else if (loglevel
<= LOGLEVEL_LOG4J2_INFO
) {
57 return LOGLEVEL_LOG4J1_INFO
;
58 } else if (loglevel
<= LOGLEVEL_LOG4J2_DEBUG
) {
59 return LOGLEVEL_LOG4J1_DEBUG
;
60 } else if (loglevel
<= LOGLEVEL_LOG4J2_TRACE
) {
61 return LOGLEVEL_LOG4J1_TRACE
;
63 return LOGLEVEL_LOG4J1_ALL
;
68 * The integer values of the loglevels has obviously changed in log4j2,
69 * translate them to the values of log4j1 since they are exposed in the API of
72 static jint
loglevel_2x_to_1x(jint loglevel
)
75 case LOGLEVEL_LOG4J2_OFF
:
76 return LOGLEVEL_LOG4J1_OFF
;
77 case LOGLEVEL_LOG4J2_FATAL
:
78 return LOGLEVEL_LOG4J1_FATAL
;
79 case LOGLEVEL_LOG4J2_ERROR
:
80 return LOGLEVEL_LOG4J1_ERROR
;
81 case LOGLEVEL_LOG4J2_WARN
:
82 return LOGLEVEL_LOG4J1_WARN
;
83 case LOGLEVEL_LOG4J2_INFO
:
84 return LOGLEVEL_LOG4J1_INFO
;
85 case LOGLEVEL_LOG4J2_DEBUG
:
86 return LOGLEVEL_LOG4J1_DEBUG
;
87 case LOGLEVEL_LOG4J2_TRACE
:
88 return LOGLEVEL_LOG4J1_TRACE
;
89 case LOGLEVEL_LOG4J2_ALL
:
90 return LOGLEVEL_LOG4J1_ALL
;
92 /* Handle custom loglevels. */
93 return loglevel_custom_2x_to_standard_1x(loglevel
);
98 * Tracepoint used by Java applications using the log4j 2.x handler.
100 JNIEXPORT
void JNICALL
Java_org_lttng_ust_agent_log4j2_LttngLog4j2Api_tracepointWithContext(JNIEnv
*env
,
101 jobject jobj
__attribute__((unused
)),
111 jbyteArray context_info_entries
,
112 jbyteArray context_info_strings
)
115 const char *msg_cstr
= (*env
)->GetStringUTFChars(env
, message
, &iscopy
);
116 const char *logger_name_cstr
= (*env
)->GetStringUTFChars(env
, loggerName
, &iscopy
);
117 const char *class_name_cstr
= (*env
)->GetStringUTFChars(env
, className
, &iscopy
);
118 const char *method_name_cstr
= (*env
)->GetStringUTFChars(env
, methodName
, &iscopy
);
119 const char *file_name_cstr
= (*env
)->GetStringUTFChars(env
, fileName
, &iscopy
);
120 const char *thread_name_cstr
= (*env
)->GetStringUTFChars(env
, threadName
, &iscopy
);
121 signed char *context_info_entries_array
;
122 signed char *context_info_strings_array
;
125 * Write these to the TLS variables, so that the UST callbacks in
126 * lttng_ust_context.c can access them.
128 context_info_entries_array
= (*env
)->GetByteArrayElements(env
, context_info_entries
, &iscopy
);
129 lttng_ust_context_info_tls
.ctx_entries
= (struct lttng_ust_jni_ctx_entry
*) context_info_entries_array
;
130 lttng_ust_context_info_tls
.ctx_entries_len
= (*env
)->GetArrayLength(env
, context_info_entries
);
131 context_info_strings_array
= (*env
)->GetByteArrayElements(env
, context_info_strings
, &iscopy
);
132 lttng_ust_context_info_tls
.ctx_strings
= context_info_strings_array
;
133 lttng_ust_context_info_tls
.ctx_strings_len
= (*env
)->GetArrayLength(env
, context_info_strings
);
135 tracepoint(lttng_log4j
, event
, msg_cstr
, logger_name_cstr
,
136 class_name_cstr
, method_name_cstr
, file_name_cstr
,
137 lineNumber
, timeStamp
, loglevel_2x_to_1x(logLevel
), thread_name_cstr
);
139 lttng_ust_context_info_tls
.ctx_entries
= NULL
;
140 lttng_ust_context_info_tls
.ctx_entries_len
= 0;
141 lttng_ust_context_info_tls
.ctx_strings
= NULL
;
142 lttng_ust_context_info_tls
.ctx_strings_len
= 0;
143 (*env
)->ReleaseStringUTFChars(env
, message
, msg_cstr
);
144 (*env
)->ReleaseStringUTFChars(env
, loggerName
, logger_name_cstr
);
145 (*env
)->ReleaseStringUTFChars(env
, className
, class_name_cstr
);
146 (*env
)->ReleaseStringUTFChars(env
, methodName
, method_name_cstr
);
147 (*env
)->ReleaseStringUTFChars(env
, fileName
, file_name_cstr
);
148 (*env
)->ReleaseStringUTFChars(env
, threadName
, thread_name_cstr
);
149 (*env
)->ReleaseByteArrayElements(env
, context_info_entries
, context_info_entries_array
, 0);
150 (*env
)->ReleaseByteArrayElements(env
, context_info_strings
, context_info_strings_array
, 0);