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use crate::{ffi, Error, DB};
use std::ffi::CString;
use std::path::Path;
const LOG_SIZE_FOR_FLUSH: u64 = 0_u64;
pub struct Checkpoint {
inner: *mut ffi::rocksdb_checkpoint_t,
}
impl Checkpoint {
pub fn new(db: &DB) -> Result<Checkpoint, Error> {
let checkpoint: *mut ffi::rocksdb_checkpoint_t;
unsafe { checkpoint = ffi_try!(ffi::rocksdb_checkpoint_object_create(db.inner)) };
if checkpoint.is_null() {
return Err(Error::new("Could not create checkpoint object.".to_owned()));
}
Ok(Checkpoint { inner: checkpoint })
}
pub fn create_checkpoint<P: AsRef<Path>>(&self, path: P) -> Result<(), Error> {
let path = path.as_ref();
let cpath = if let Ok(c) = CString::new(path.to_string_lossy().as_bytes()) {
c
} else {
return Err(Error::new(
"Failed to convert path to CString when creating DB checkpoint".to_owned(),
));
};
unsafe {
ffi_try!(ffi::rocksdb_checkpoint_create(
self.inner,
cpath.as_ptr(),
LOG_SIZE_FOR_FLUSH,
));
Ok(())
}
}
}
impl Drop for Checkpoint {
fn drop(&mut self) {
unsafe {
ffi::rocksdb_checkpoint_object_destroy(self.inner);
}
}
}