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#include <uwsgi.h>
/*
This is an example exception handler logging a dump of the exception packet
It is not built by default, to discourage its usage, as it is non-thread-safe (log lines
will be clobbered).
You can use it as a debugger when developing true exception handlers
*/
static void uwsgi_exception_handler_log_parser_vars(char *key, uint16_t keylen, char *value, uint16_t vallen, void *data) {
uwsgi_log("\t%.*s=%.*s\n", keylen, key, vallen, value);
}
static void uwsgi_exception_handler_log_parser_backtrace(uint16_t pos, char *value, uint16_t vallen, void *data) {
uint16_t item = 0;
if (pos > 0) {
item = pos % 5;
}
switch(item) {
// filename
case 0:
uwsgi_log("\tfilename: \"%.*s\" ", vallen, value);
break;
// lineno
case 1:
uwsgi_log("line: %.*s ", vallen, value);
break;
// function
case 2:
uwsgi_log("function: \"%.*s\" ", vallen, value);
break;
// text
case 3:
if (vallen > 0) {
uwsgi_log("text/code: \"%.*s\" ", vallen, value);
}
break;
// custom
case 4:
if (vallen > 0) {
uwsgi_log("custom: \"%.*s\"", vallen, value);
}
uwsgi_log("\n");
break;
default:
break;
}
}
static void uwsgi_exception_handler_log_parser(char *key, uint16_t keylen, char *value, uint16_t vallen, void *data) {
if (!uwsgi_strncmp(key, keylen, "vars", 4)) {
uwsgi_log("vars:\n");
uwsgi_hooked_parse(value, vallen, uwsgi_exception_handler_log_parser_vars, NULL);
uwsgi_log("\n");
return;
}
if (!uwsgi_strncmp(key, keylen, "backtrace", 9)) {
uwsgi_log("backtrace:\n");
uwsgi_hooked_parse_array(value, vallen, uwsgi_exception_handler_log_parser_backtrace, NULL);
uwsgi_log("\n");
return;
}
if (!uwsgi_strncmp(key, keylen, "class", 5)) {
uwsgi_log("class: %.*s\n", vallen, value);
return;
}
if (!uwsgi_strncmp(key, keylen, "msg", 3)) {
uwsgi_log("msg: %.*s\n", vallen, value);
return;
}
if (!uwsgi_strncmp(key, keylen, "repr", 4)) {
uwsgi_log("repr: %.*s\n", vallen, value);
return;
}
if (!uwsgi_strncmp(key, keylen, "unix", 4)) {
uwsgi_log("unix: %.*s\n", vallen, value);
return;
}
if (!uwsgi_strncmp(key, keylen, "wid", 3)) {
uwsgi_log("wid: %.*s\n", vallen, value);
return;
}
if (!uwsgi_strncmp(key, keylen, "pid", 3)) {
uwsgi_log("pid: %.*s\n", vallen, value);
return;
}
if (!uwsgi_strncmp(key, keylen, "core", 4)) {
uwsgi_log("core: %.*s\n", vallen, value);
return;
}
if (!uwsgi_strncmp(key, keylen, "node", 4)) {
uwsgi_log("node: %.*s\n", vallen, value);
return;
}
}
static int uwsgi_exception_handler_log(struct uwsgi_exception_handler_instance *uehi, char *buf, size_t len) {
uwsgi_log("\n!!! \"log\" exception handler !!!\n\n");
uwsgi_hooked_parse(buf, len, uwsgi_exception_handler_log_parser, NULL);
uwsgi_log("\n!!! end of \"log\" exception handler output !!!\n\n");
return 0;
}
static void register_exception_log() {
uwsgi_register_exception_handler("log", uwsgi_exception_handler_log);
}
struct uwsgi_plugin exception_log_plugin = {
.name = "exception_log",
.on_load = register_exception_log,
};
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