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use std::ffi::CStr;
use grpc_sys::{self, GprLogFuncArgs, GprLogSeverity};
use log::{self, LogLevel, LogLevelFilter, LogLocation};
#[inline]
fn severity_to_log_level(severity: GprLogSeverity) -> LogLevel {
match severity {
GprLogSeverity::Debug => LogLevel::Debug,
GprLogSeverity::Info => LogLevel::Info,
GprLogSeverity::Error => LogLevel::Error,
}
}
extern "C" fn delegate(c_args: *mut GprLogFuncArgs) {
let args = unsafe { &*c_args };
let level = severity_to_log_level(args.severity);
if !log_enabled!(level) {
return;
}
let file_str = unsafe { CStr::from_ptr(args.file).to_str().unwrap() };
let line = args.line as u32;
let location = LogLocation {
__module_path: module_path!(),
__file: file_str,
__line: line,
};
let msg = unsafe { CStr::from_ptr(args.message).to_string_lossy() };
log::__log(level, module_path!(), &location, format_args!("{}", msg));
}
pub fn redirect_log() {
let level = match log::max_log_level() {
LogLevelFilter::Off => unsafe {
grpc_sys::gpr_set_log_function(None);
return;
},
LogLevelFilter::Error | LogLevelFilter::Warn => GprLogSeverity::Error,
LogLevelFilter::Info => GprLogSeverity::Info,
LogLevelFilter::Debug | LogLevelFilter::Trace => GprLogSeverity::Debug,
};
unsafe {
grpc_sys::gpr_set_log_verbosity(level);
grpc_sys::gpr_set_log_function(Some(delegate));
}
}