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logging: Add API's to switch logging formats at runtime.

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Add support for new API's log_backend_format_set and
log_format_set_all_active_backends to switch the logging format
for one backend and for all the active backends respectively.
Using format_set function pointer in log_backend_api struct as a hook
to set the log format at runtime in the backends. Add function pointer
table with helper functions to be used as a way to select log format.
Add supported log format types as macros to use with the API.

Signed-off-by: Aastha Grover <aastha.grover@intel.com>
This commit is contained in:
Aastha Grover 2022-01-27 13:57:53 -08:00 • committed by Maureen Helm
commit 9fcbace639
5 changed files with 126 additions and 7 deletions
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41
subsys/logging/log_core.c
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@ -19,6 +19,7 @@
#include <ctype.h>
#include <logging/log_frontend.h>
#include <syscall_handler.h>
#include <logging/log_output_dict.h>
LOG_MODULE_REGISTER(log);
@ -58,6 +59,26 @@ LOG_MODULE_REGISTER(log);
#define CONFIG_LOG_BUFFER_SIZE 4
#endif
#ifndef CONFIG_LOG1
log_format_func_t format_table[] = {
[LOG_OUTPUT_TEXT] = log_output_msg2_process,
[LOG_OUTPUT_SYST] = IS_ENABLED(CONFIG_LOG_MIPI_SYST_ENABLE) ?
log_output_msg2_syst_process : NULL,
[LOG_OUTPUT_DICT] = IS_ENABLED(CONFIG_LOG_DICTIONARY_SUPPORT) ?
log_dict_output_msg2_process : NULL
};
log_format_func_t log_format_func_t_get(uint32_t log_type)
{
return format_table[log_type];
}
size_t log_format_table_size(void)
{
return ARRAY_SIZE(format_table);
}
#endif
struct log_strdup_buf {
atomic_t refcount;
char buf[CONFIG_LOG_STRDUP_MAX_STRING + 1]; /* for termination */
@ -354,6 +375,26 @@ void log_n(const char *str,
}
}
#ifndef CONFIG_LOG1
const struct log_backend *log_format_set_all_active_backends(size_t log_type)
{
const struct log_backend *backend;
const struct log_backend *failed_backend = NULL;
for (int i = 0; i < log_backend_count_get(); i++) {
backend = log_backend_get(i);
if (log_backend_is_active(backend)) {
int retCode = log_backend_format_set(backend, log_type);
if (retCode != 0) {
failed_backend = backend;
}
}
}
return failed_backend;
}
#endif
void log_hexdump(const char *str, const void *data, uint32_t length,
struct log_msg_ids src_level)
{