88 lines
2.5 KiB
C
88 lines
2.5 KiB
C
/*
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* Copyright 2017 Cisco Systems, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "debug.h"
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#include <stdio.h>
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#include <stdarg.h>
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#include <stdlib.h>
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#include <time.h>
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#include <pthread.h>
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#include <stdbool.h>
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static nfapi_trace_level_t trace_level = NFAPI_TRACE_WARN;
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static void nfapi_trace_init(void)
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{
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static bool initialized;
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if (initialized)
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return;
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initialized = true;
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const char *env = getenv("NFAPI_TRACE_LEVEL");
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if (!env)
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return;
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if (strcmp(env, "none") == 0)
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trace_level = NFAPI_TRACE_NONE;
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else if (strcmp(env, "error") == 0)
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trace_level = NFAPI_TRACE_ERROR;
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else if (strcmp(env, "warn") == 0)
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trace_level = NFAPI_TRACE_WARN;
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else if (strcmp(env, "note") == 0)
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trace_level = NFAPI_TRACE_NOTE;
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else if (strcmp(env, "info") == 0)
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trace_level = NFAPI_TRACE_INFO;
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else if (strcmp(env, "debug") == 0)
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trace_level = NFAPI_TRACE_DEBUG;
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else
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{
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nfapi_trace(NFAPI_TRACE_ERROR, __func__, "Invalid NFAPI_TRACE_LEVEL='%s'", env);
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return;
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}
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nfapi_trace(trace_level, __func__, "NFAPI_TRACE_LEVEL='%s'", env);
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}
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nfapi_trace_level_t nfapi_trace_level()
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{
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nfapi_trace_init();
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return trace_level;
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}
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void nfapi_trace(nfapi_trace_level_t level,
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char const *caller,
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char const *format, ...)
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{
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struct timespec ts;
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clock_gettime(CLOCK_MONOTONIC, &ts);
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printf("%ld.%06ld [%c] %10u: %s: ",
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ts.tv_sec,
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ts.tv_nsec / 1000,
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"XEWNID"[level], // NFAPI_TRACE_NONE, NFAPI_TRACE_ERROR, ...
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(unsigned) pthread_self(),
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caller);
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va_list ap;
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va_start(ap, format);
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vprintf(format, ap);
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va_end(ap);
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// Add a newline if the format string didn't have one
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int len = strlen(format);
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if (len == 0 || format[len - 1] != '\n')
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putchar('\n');
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fflush(stdout);
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}
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