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use {TableProperties, TablePropertiesCollectionView};
use crocksdb_ffi::{self, DBCompactionJobInfo, DBEventListener, DBFlushJobInfo, DBIngestionInfo,
DBInstance};
use libc::c_void;
use std::{mem, slice, str};
use std::path::Path;
macro_rules! fetch_str {
($func:ident($($arg:expr),*)) => ({
let mut len = 0;
let ptr = crocksdb_ffi::$func($($arg),*, &mut len);
let s = slice::from_raw_parts(ptr as *const u8, len);
str::from_utf8(s).unwrap()
})
}
pub struct FlushJobInfo(DBFlushJobInfo);
impl FlushJobInfo {
pub fn cf_name(&self) -> &str {
unsafe { fetch_str!(crocksdb_flushjobinfo_cf_name(&self.0)) }
}
pub fn file_path(&self) -> &Path {
let p = unsafe { fetch_str!(crocksdb_flushjobinfo_file_path(&self.0)) };
Path::new(p)
}
pub fn table_properties(&self) -> &TableProperties {
unsafe {
let prop = crocksdb_ffi::crocksdb_flushjobinfo_table_properties(&self.0);
TableProperties::from_ptr(prop)
}
}
}
pub struct CompactionJobInfo(DBCompactionJobInfo);
impl CompactionJobInfo {
pub fn cf_name(&self) -> &str {
unsafe { fetch_str!(crocksdb_compactionjobinfo_cf_name(&self.0)) }
}
pub fn input_file_count(&self) -> usize {
unsafe { crocksdb_ffi::crocksdb_compactionjobinfo_input_files_count(&self.0) }
}
pub fn input_file_at(&self, pos: usize) -> &Path {
let p = unsafe { fetch_str!(crocksdb_compactionjobinfo_input_file_at(&self.0, pos)) };
Path::new(p)
}
pub fn output_file_count(&self) -> usize {
unsafe { crocksdb_ffi::crocksdb_compactionjobinfo_output_files_count(&self.0) }
}
pub fn output_file_at(&self, pos: usize) -> &Path {
let p = unsafe { fetch_str!(crocksdb_compactionjobinfo_output_file_at(&self.0, pos)) };
Path::new(p)
}
pub fn table_properties(&self) -> &TablePropertiesCollectionView {
unsafe {
let prop = crocksdb_ffi::crocksdb_compactionjobinfo_table_properties(&self.0);
TablePropertiesCollectionView::from_ptr(prop)
}
}
pub fn elapsed_micros(&self) -> u64 {
unsafe { crocksdb_ffi::crocksdb_compactionjobinfo_elapsed_micros(&self.0) }
}
pub fn num_corrupt_keys(&self) -> u64 {
unsafe { crocksdb_ffi::crocksdb_compactionjobinfo_num_corrupt_keys(&self.0) }
}
pub fn output_level(&self) -> i32 {
unsafe { crocksdb_ffi::crocksdb_compactionjobinfo_output_level(&self.0) }
}
pub fn input_records(&self) -> u64 {
unsafe { crocksdb_ffi::crocksdb_compactionjobinfo_input_records(&self.0) }
}
pub fn output_records(&self) -> u64 {
unsafe { crocksdb_ffi::crocksdb_compactionjobinfo_output_records(&self.0) }
}
pub fn total_input_bytes(&self) -> u64 {
unsafe { crocksdb_ffi::crocksdb_compactionjobinfo_total_input_bytes(&self.0) }
}
pub fn total_output_bytes(&self) -> u64 {
unsafe { crocksdb_ffi::crocksdb_compactionjobinfo_total_output_bytes(&self.0) }
}
}
pub struct IngestionInfo(DBIngestionInfo);
impl IngestionInfo {
pub fn cf_name(&self) -> &str {
unsafe { fetch_str!(crocksdb_externalfileingestioninfo_cf_name(&self.0)) }
}
pub fn internal_file_path(&self) -> &Path {
let p = unsafe {
fetch_str!(crocksdb_externalfileingestioninfo_internal_file_path(
&self.0
))
};
Path::new(p)
}
pub fn table_properties(&self) -> &TableProperties {
unsafe {
let prop = crocksdb_ffi::crocksdb_externalfileingestioninfo_table_properties(&self.0);
TableProperties::from_ptr(prop)
}
}
}
pub trait EventListener: Send + Sync {
fn on_flush_completed(&self, _: &FlushJobInfo) {}
fn on_compaction_completed(&self, _: &CompactionJobInfo) {}
fn on_external_file_ingested(&self, _: &IngestionInfo) {}
}
extern "C" fn destructor(ctx: *mut c_void) {
unsafe {
Box::from_raw(ctx as *mut Box<EventListener>);
}
}
extern "C" fn on_flush_completed(
ctx: *mut c_void,
_: *mut DBInstance,
info: *const DBFlushJobInfo,
) {
let (ctx, info) = unsafe { (&*(ctx as *mut Box<EventListener>), mem::transmute(&*info)) };
ctx.on_flush_completed(info);
}
extern "C" fn on_compaction_completed(
ctx: *mut c_void,
_: *mut DBInstance,
info: *const DBCompactionJobInfo,
) {
let (ctx, info) = unsafe { (&*(ctx as *mut Box<EventListener>), mem::transmute(&*info)) };
ctx.on_compaction_completed(info);
}
extern "C" fn on_external_file_ingested(
ctx: *mut c_void,
_: *mut DBInstance,
info: *const DBIngestionInfo,
) {
let (ctx, info) = unsafe { (&*(ctx as *mut Box<EventListener>), mem::transmute(&*info)) };
ctx.on_external_file_ingested(info);
}
pub fn new_event_listener<L: EventListener>(l: L) -> *mut DBEventListener {
let p: Box<EventListener> = Box::new(l);
unsafe {
crocksdb_ffi::crocksdb_eventlistener_create(
Box::into_raw(Box::new(p)) as *mut c_void,
destructor,
on_flush_completed,
on_compaction_completed,
on_external_file_ingested,
)
}
}