1 /*
2 *
3 * Copyright 2015 gRPC authors.
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 *
17 */
18
19 #include <grpc/support/port_platform.h>
20
21 #include <grpc/support/alloc.h>
22 #include <grpc/support/atm.h>
23 #include <grpc/support/log.h>
24
25 #include "src/core/lib/gpr/env.h"
26 #include "src/core/lib/gpr/string.h"
27
28 #include <stdio.h>
29 #include <string.h>
30
31 void gpr_default_log(gpr_log_func_args* args);
32 static gpr_atm g_log_func = (gpr_atm)gpr_default_log;
33 static gpr_atm g_min_severity_to_print = GPR_LOG_VERBOSITY_UNSET;
34
gpr_log_severity_string(gpr_log_severity severity)35 const char* gpr_log_severity_string(gpr_log_severity severity) {
36 switch (severity) {
37 case GPR_LOG_SEVERITY_DEBUG:
38 return "D";
39 case GPR_LOG_SEVERITY_INFO:
40 return "I";
41 case GPR_LOG_SEVERITY_ERROR:
42 return "E";
43 }
44 GPR_UNREACHABLE_CODE(return "UNKNOWN");
45 }
46
gpr_should_log(gpr_log_severity severity)47 int gpr_should_log(gpr_log_severity severity) {
48 return static_cast<gpr_atm>(severity) >=
49 gpr_atm_no_barrier_load(&g_min_severity_to_print)
50 ? 1
51 : 0;
52 }
53
gpr_log_message(const char * file,int line,gpr_log_severity severity,const char * message)54 void gpr_log_message(const char* file, int line, gpr_log_severity severity,
55 const char* message) {
56 if (gpr_should_log(severity) == 0) {
57 return;
58 }
59
60 gpr_log_func_args lfargs;
61 memset(&lfargs, 0, sizeof(lfargs));
62 lfargs.file = file;
63 lfargs.line = line;
64 lfargs.severity = severity;
65 lfargs.message = message;
66 ((gpr_log_func)gpr_atm_no_barrier_load(&g_log_func))(&lfargs);
67 }
68
gpr_set_log_verbosity(gpr_log_severity min_severity_to_print)69 void gpr_set_log_verbosity(gpr_log_severity min_severity_to_print) {
70 gpr_atm_no_barrier_store(&g_min_severity_to_print,
71 (gpr_atm)min_severity_to_print);
72 }
73
gpr_log_verbosity_init()74 void gpr_log_verbosity_init() {
75 char* verbosity = nullptr;
76 const char* insecure_getenv = gpr_getenv_silent("GRPC_VERBOSITY", &verbosity);
77
78 gpr_atm min_severity_to_print = GPR_LOG_SEVERITY_ERROR;
79 if (verbosity != nullptr) {
80 if (gpr_stricmp(verbosity, "DEBUG") == 0) {
81 min_severity_to_print = static_cast<gpr_atm>(GPR_LOG_SEVERITY_DEBUG);
82 } else if (gpr_stricmp(verbosity, "INFO") == 0) {
83 min_severity_to_print = static_cast<gpr_atm>(GPR_LOG_SEVERITY_INFO);
84 } else if (gpr_stricmp(verbosity, "ERROR") == 0) {
85 min_severity_to_print = static_cast<gpr_atm>(GPR_LOG_SEVERITY_ERROR);
86 }
87 gpr_free(verbosity);
88 }
89 if ((gpr_atm_no_barrier_load(&g_min_severity_to_print)) ==
90 GPR_LOG_VERBOSITY_UNSET) {
91 gpr_atm_no_barrier_store(&g_min_severity_to_print, min_severity_to_print);
92 }
93
94 if (insecure_getenv != nullptr) {
95 gpr_log(GPR_DEBUG, "Warning: insecure environment read function '%s' used",
96 insecure_getenv);
97 }
98 }
99
gpr_set_log_function(gpr_log_func f)100 void gpr_set_log_function(gpr_log_func f) {
101 gpr_atm_no_barrier_store(&g_log_func, (gpr_atm)(f ? f : gpr_default_log));
102 }
103