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use crocksdb_ffi;
use libc::{c_char, c_void};
use librocksdb_sys::{DBEnv, DBInfoLogLevel as InfoLogLevel, DBLogger};
use std::ffi::{CStr, CString};
use std::str;
pub trait Logger: Send + Sync {
fn logv(&self, log_level: InfoLogLevel, log: &str);
}
extern "C" fn destructor(ctx: *mut c_void) {
unsafe {
Box::from_raw(ctx as *mut Box<dyn Logger>);
}
}
extern "C" fn logv(ctx: *mut c_void, log_level: InfoLogLevel, log: *const c_char) {
unsafe {
let logger = &*(ctx as *mut Box<dyn Logger>);
let log = CStr::from_ptr(log);
logger.logv(log_level, &log.to_string_lossy());
}
}
pub fn new_logger<L: Logger>(l: L) -> *mut DBLogger {
unsafe {
let p: Box<dyn Logger> = Box::new(l);
crocksdb_ffi::crocksdb_logger_create(
Box::into_raw(Box::new(p)) as *mut c_void,
destructor,
logv,
)
}
}
pub fn create_env_logger(fname: &str, mut env: DBEnv) -> *mut DBLogger {
let name = CString::new(fname.as_bytes()).unwrap();
unsafe { crocksdb_ffi::crocksdb_create_env_logger(name.as_ptr(), &mut env) }
}