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Rocksdb -> RocksDB

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master
Tyler Neely 11 years ago
parent e08f60e535
commit f2b6d109c9
5 changed files with 129 additions and 129 deletions
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  1. 4
      README.md
  2. 128
      rocksdb-sys/lib.rs
  3. 4
      src/lib.rs
  4. 8
      src/main.rs
  5. 114
      src/rocksdb.rs

4
README.md
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@ -11,10 +11,10 @@ RocksDB 3.8.1 will be pulled in and compiled automatically.
###### Code ###### Code
```rust ```rust
extern crate rocksdb; extern crate rocksdb;
use rocksdb::Rocksdb; use rocksdb::RocksDB;
fn main() { fn main() {
match Rocksdb::open_default("/path/for/rocksdb/storage") { match RocksDB::open_default("/path/for/rocksdb/storage") {
Ok(db) => { Ok(db) => {
db.put(b"my key", b"my value"); db.put(b"my key", b"my value");

128
rocksdb-sys/lib.rs
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@ -2,116 +2,116 @@ extern crate libc;
use self::libc::{c_char, c_int, c_void, size_t}; use self::libc::{c_char, c_int, c_void, size_t};
#[repr(C)] #[repr(C)]
pub struct RocksdbOptions(pub *const c_void); pub struct RocksDBOptions(pub *const c_void);
#[repr(C)] #[repr(C)]
pub struct RocksdbInstance(pub *const c_void); pub struct RocksDBInstance(pub *const c_void);
#[repr(C)] #[repr(C)]
pub struct RocksdbWriteOptions(pub *const c_void); pub struct RocksDBWriteOptions(pub *const c_void);
#[repr(C)] #[repr(C)]
pub struct RocksdbReadOptions(pub *const c_void); pub struct RocksDBReadOptions(pub *const c_void);
#[repr(C)] #[repr(C)]
pub struct RocksdbCompactionFilter(pub *const c_void); pub struct RocksDBCompactionFilter(pub *const c_void);
#[repr(C)] #[repr(C)]
pub struct RocksdbMergeOperator(pub *const c_void); pub struct RocksDBMergeOperator(pub *const c_void);
#[repr(C)] #[repr(C)]
pub struct RocksdbFilterPolicy(pub *const c_void); pub struct RocksDBFilterPolicy(pub *const c_void);
#[repr(C)] #[repr(C)]
pub enum RocksdbCompressionType { pub enum RocksDBCompressionType {
RocksdbNoCompression = 0, RocksDBNoCompression = 0,
RocksdbSnappyCompression = 1, RocksDBSnappyCompression = 1,
RocksdbZlibCompression = 2, RocksDBZlibCompression = 2,
RocksdbBz2Compression = 3, RocksDBBz2Compression = 3,
RocksdbLz4Compression = 4, RocksDBLz4Compression = 4,
RocksdbLz4hcCompression = 5 RocksDBLz4hcCompression = 5
} }
#[repr(C)] #[repr(C)]
pub enum RocksdbCompactionStyle { pub enum RocksDBCompactionStyle {
RocksdbLevelCompaction = 0, RocksDBLevelCompaction = 0,
RocksdbUniversalCompaction = 1, RocksDBUniversalCompaction = 1,
RocksdbFifoCompaction = 2 RocksDBFifoCompaction = 2
} }
#[repr(C)] #[repr(C)]
pub enum RocksdbUniversalCompactionStyle { pub enum RocksDBUniversalCompactionStyle {
rocksdb_similar_size_compaction_stop_style = 0, rocksdb_similar_size_compaction_stop_style = 0,
rocksdb_total_size_compaction_stop_style = 1 rocksdb_total_size_compaction_stop_style = 1
} }
#[link(name = "rocksdb")] #[link(name = "rocksdb")]
extern { extern {
pub fn rocksdb_options_create() -> RocksdbOptions; pub fn rocksdb_options_create() -> RocksDBOptions;
pub fn rocksdb_options_increase_parallelism( pub fn rocksdb_options_increase_parallelism(
options: RocksdbOptions, threads: c_int); options: RocksDBOptions, threads: c_int);
pub fn rocksdb_options_optimize_level_style_compaction( pub fn rocksdb_options_optimize_level_style_compaction(
options: RocksdbOptions, memtable_memory_budget: c_int); options: RocksDBOptions, memtable_memory_budget: c_int);
pub fn rocksdb_options_set_create_if_missing( pub fn rocksdb_options_set_create_if_missing(
options: RocksdbOptions, v: c_int); options: RocksDBOptions, v: c_int);
pub fn rocksdb_options_set_max_open_files( pub fn rocksdb_options_set_max_open_files(
options: RocksdbOptions, files: c_int); options: RocksDBOptions, files: c_int);
pub fn rocksdb_options_set_use_fsync( pub fn rocksdb_options_set_use_fsync(
options: RocksdbOptions, v: c_int); options: RocksDBOptions, v: c_int);
pub fn rocksdb_options_set_bytes_per_sync( pub fn rocksdb_options_set_bytes_per_sync(
options: RocksdbOptions, bytes: u64); options: RocksDBOptions, bytes: u64);
pub fn rocksdb_options_set_disable_data_sync( pub fn rocksdb_options_set_disable_data_sync(
options: RocksdbOptions, v: c_int); options: RocksDBOptions, v: c_int);
pub fn rocksdb_options_optimize_for_point_lookup( pub fn rocksdb_options_optimize_for_point_lookup(
options: RocksdbOptions, block_cache_size_mb: u64); options: RocksDBOptions, block_cache_size_mb: u64);
pub fn rocksdb_options_set_table_cache_numshardbits( pub fn rocksdb_options_set_table_cache_numshardbits(
options: RocksdbOptions, bits: u64); options: RocksDBOptions, bits: u64);
pub fn rocksdb_options_set_max_write_buffer_number( pub fn rocksdb_options_set_max_write_buffer_number(
options: RocksdbOptions, bufno: c_int); options: RocksDBOptions, bufno: c_int);
pub fn rocksdb_options_set_min_write_buffer_number_to_merge( pub fn rocksdb_options_set_min_write_buffer_number_to_merge(
options: RocksdbOptions, bufno: c_int); options: RocksDBOptions, bufno: c_int);
pub fn rocksdb_options_set_level0_file_num_compaction_trigger( pub fn rocksdb_options_set_level0_file_num_compaction_trigger(
options: RocksdbOptions, no: c_int); options: RocksDBOptions, no: c_int);
pub fn rocksdb_options_set_level0_slowdown_writes_trigger( pub fn rocksdb_options_set_level0_slowdown_writes_trigger(
options: RocksdbOptions, no: c_int); options: RocksDBOptions, no: c_int);
pub fn rocksdb_options_set_level0_stop_writes_trigger( pub fn rocksdb_options_set_level0_stop_writes_trigger(
options: RocksdbOptions, no: c_int); options: RocksDBOptions, no: c_int);
pub fn rocksdb_options_set_write_buffer_size( pub fn rocksdb_options_set_write_buffer_size(
options: RocksdbOptions, bytes: u64); options: RocksDBOptions, bytes: u64);
pub fn rocksdb_options_set_target_file_size_base( pub fn rocksdb_options_set_target_file_size_base(
options: RocksdbOptions, bytes: u64); options: RocksDBOptions, bytes: u64);
pub fn rocksdb_options_set_target_file_size_multiplier( pub fn rocksdb_options_set_target_file_size_multiplier(
options: RocksdbOptions, mul: c_int); options: RocksDBOptions, mul: c_int);
pub fn rocksdb_options_set_max_log_file_size( pub fn rocksdb_options_set_max_log_file_size(
options: RocksdbOptions, bytes: u64); options: RocksDBOptions, bytes: u64);
pub fn rocksdb_options_set_max_manifest_file_size( pub fn rocksdb_options_set_max_manifest_file_size(
options: RocksdbOptions, bytes: u64); options: RocksDBOptions, bytes: u64);
pub fn rocksdb_options_set_hash_skip_list_rep( pub fn rocksdb_options_set_hash_skip_list_rep(
options: RocksdbOptions, bytes: u64, a1: i32, a2: i32); options: RocksDBOptions, bytes: u64, a1: i32, a2: i32);
pub fn rocksdb_options_set_compaction_style( pub fn rocksdb_options_set_compaction_style(
options: RocksdbOptions, cs: RocksdbCompactionStyle); options: RocksDBOptions, cs: RocksDBCompactionStyle);
pub fn rocksdb_options_set_compression( pub fn rocksdb_options_set_compression(
options: RocksdbOptions, compression_style_no: c_int); options: RocksDBOptions, compression_style_no: c_int);
pub fn rocksdb_options_set_max_background_compactions( pub fn rocksdb_options_set_max_background_compactions(
options: RocksdbOptions, max_bg_compactions: c_int); options: RocksDBOptions, max_bg_compactions: c_int);
pub fn rocksdb_options_set_max_background_flushes( pub fn rocksdb_options_set_max_background_flushes(
options: RocksdbOptions, max_bg_flushes: c_int); options: RocksDBOptions, max_bg_flushes: c_int);
pub fn rocksdb_options_set_filter_deletes( pub fn rocksdb_options_set_filter_deletes(
options: RocksdbOptions, v: u8); options: RocksDBOptions, v: u8);
//pub fn rocksdb_compactionfilter_create() -> RocksdbCompactionFilter; //pub fn rocksdb_compactionfilter_create() -> RocksDBCompactionFilter;
pub fn rocksdb_filterpolicy_create_bloom( pub fn rocksdb_filterpolicy_create_bloom(
bits_per_key: c_int) -> RocksdbFilterPolicy; bits_per_key: c_int) -> RocksDBFilterPolicy;
pub fn rocksdb_open(options: RocksdbOptions, pub fn rocksdb_open(options: RocksDBOptions,
path: *const i8, err: *mut i8) -> RocksdbInstance; path: *const i8, err: *mut i8) -> RocksDBInstance;
pub fn rocksdb_writeoptions_create() -> RocksdbWriteOptions; pub fn rocksdb_writeoptions_create() -> RocksDBWriteOptions;
pub fn rocksdb_put(db: RocksdbInstance, writeopts: RocksdbWriteOptions, pub fn rocksdb_put(db: RocksDBInstance, writeopts: RocksDBWriteOptions,
k: *const u8, kLen: size_t, v: *const u8, k: *const u8, kLen: size_t, v: *const u8,
vLen: size_t, err: *mut i8); vLen: size_t, err: *mut i8);
pub fn rocksdb_readoptions_create() -> RocksdbReadOptions; pub fn rocksdb_readoptions_create() -> RocksDBReadOptions;
pub fn rocksdb_get(db: RocksdbInstance, readopts: RocksdbReadOptions, pub fn rocksdb_get(db: RocksDBInstance, readopts: RocksDBReadOptions,
k: *const u8, kLen: size_t, k: *const u8, kLen: size_t,
valLen: *const size_t, err: *mut i8) -> *mut c_void; valLen: *const size_t, err: *mut i8) -> *mut c_void;
pub fn rocksdb_delete(db: RocksdbInstance, writeopts: RocksdbWriteOptions, pub fn rocksdb_delete(db: RocksDBInstance, writeopts: RocksDBWriteOptions,
k: *const u8, kLen: size_t, err: *mut i8) -> *mut c_void; k: *const u8, kLen: size_t, err: *mut i8) -> *mut c_void;
pub fn rocksdb_close(db: RocksdbInstance); pub fn rocksdb_close(db: RocksDBInstance);
pub fn rocksdb_destroy_db( pub fn rocksdb_destroy_db(
options: RocksdbOptions, path: *const i8, err: *mut i8); options: RocksDBOptions, path: *const i8, err: *mut i8);
pub fn rocksdb_repair_db( pub fn rocksdb_repair_db(
options: RocksdbOptions, path: *const i8, err: *mut i8); options: RocksDBOptions, path: *const i8, err: *mut i8);
// Merge Operator // Merge Operator
pub fn rocksdb_mergeoperator_create( pub fn rocksdb_mergeoperator_create(
@ -132,11 +132,11 @@ extern {
) -> *const c_char, ) -> *const c_char,
delete_value: extern fn(*mut c_void, value: *const c_char, value_len: *mut size_t) -> (), delete_value: extern fn(*mut c_void, value: *const c_char, value_len: *mut size_t) -> (),
name_fn: extern fn(*mut c_void) -> *const c_char, name_fn: extern fn(*mut c_void) -> *const c_char,
) -> RocksdbMergeOperator; ) -> RocksDBMergeOperator;
pub fn rocksdb_mergeoperator_destroy(mo: RocksdbMergeOperator); pub fn rocksdb_mergeoperator_destroy(mo: RocksDBMergeOperator);
pub fn rocksdb_options_set_merge_operator( pub fn rocksdb_options_set_merge_operator(
options: RocksdbOptions, options: RocksDBOptions,
mo: RocksdbMergeOperator); mo: RocksDBMergeOperator);
} }
#[allow(dead_code)] #[allow(dead_code)]
@ -144,7 +144,7 @@ extern {
fn internal() { fn internal() {
unsafe { unsafe {
let opts = rocksdb_options_create(); let opts = rocksdb_options_create();
let RocksdbOptions(opt_ptr) = opts; let RocksDBOptions(opt_ptr) = opts;
assert!(opt_ptr.is_not_null()); assert!(opt_ptr.is_not_null());
rocksdb_options_increase_parallelism(opts, 0); rocksdb_options_increase_parallelism(opts, 0);
@ -161,7 +161,7 @@ fn internal() {
libc::free(err as *mut c_void); libc::free(err as *mut c_void);
let writeopts = rocksdb_writeoptions_create(); let writeopts = rocksdb_writeoptions_create();
let RocksdbWriteOptions(write_opt_ptr) = writeopts; let RocksDBWriteOptions(write_opt_ptr) = writeopts;
assert!(write_opt_ptr.is_not_null()); assert!(write_opt_ptr.is_not_null());
let key = b"name\x00"; let key = b"name\x00";
@ -172,7 +172,7 @@ fn internal() {
libc::free(err as *mut c_void); libc::free(err as *mut c_void);
let readopts = rocksdb_readoptions_create(); let readopts = rocksdb_readoptions_create();
let RocksdbReadOptions(read_opts_ptr) = readopts; let RocksDBReadOptions(read_opts_ptr) = readopts;
assert!(read_opts_ptr.is_not_null()); assert!(read_opts_ptr.is_not_null());
libc::free(err as *mut c_void); libc::free(err as *mut c_void);

4
src/lib.rs
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@ -5,7 +5,7 @@
extern crate "rocksdb-sys" as rocksdb_ffi; extern crate "rocksdb-sys" as rocksdb_ffi;
pub use rocksdb::{ pub use rocksdb::{
Rocksdb, RocksDB,
RocksdbResult, RocksDBResult,
}; };
pub mod rocksdb; pub mod rocksdb;

8
src/main.rs
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@ -1,11 +1,11 @@
extern crate rocksdb; extern crate rocksdb;
extern crate test; extern crate test;
use rocksdb::Rocksdb; use rocksdb::RocksDB;
use test::Bencher; use test::Bencher;
#[allow(dead_code)] #[allow(dead_code)]
fn main() { fn main() {
match Rocksdb::open_default("/tmp/rust-rocksdb") { match RocksDB::open_default("/tmp/rust-rocksdb") {
Ok(db) => { Ok(db) => {
assert!(db.put(b"my key", b"my value").is_ok()); assert!(db.put(b"my key", b"my value").is_ok());
@ -31,7 +31,7 @@ fn main() {
#[allow(dead_code)] #[allow(dead_code)]
#[bench] #[bench]
fn writes(b: &mut Bencher) { fn writes(b: &mut Bencher) {
let db = Rocksdb::open_default("testdb").unwrap(); let db = RocksDB::open_default("testdb").unwrap();
let mut i = 0 as u64; let mut i = 0 as u64;
b.iter(|| { b.iter(|| {
db.put(i.to_string().as_bytes(), b"v1111"); db.put(i.to_string().as_bytes(), b"v1111");
@ -43,7 +43,7 @@ fn writes(b: &mut Bencher) {
#[allow(dead_code)] #[allow(dead_code)]
#[bench] #[bench]
fn reads(b: &mut Bencher) { fn reads(b: &mut Bencher) {
let db = Rocksdb::open_default("testdb").unwrap(); let db = RocksDB::open_default("testdb").unwrap();
let mut i = 0 as u64; let mut i = 0 as u64;
b.iter(|| { b.iter(|| {
db.get(i.to_string().as_bytes()).on_error( db.get(i.to_string().as_bytes()).on_error(

114
src/rocksdb.rs
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@ -7,20 +7,20 @@ use std::str::from_utf8;
use rocksdb_ffi; use rocksdb_ffi;
pub struct RocksdbOptions { pub struct RocksDBOptions {
inner: rocksdb_ffi::RocksdbOptions, inner: rocksdb_ffi::RocksDBOptions,
} }
impl RocksdbOptions { impl RocksDBOptions {
pub fn new() -> RocksdbOptions { pub fn new() -> RocksDBOptions {
unsafe { unsafe {
let opts = rocksdb_ffi::rocksdb_options_create(); let opts = rocksdb_ffi::rocksdb_options_create();
let rocksdb_ffi::RocksdbOptions(opt_ptr) = opts; let rocksdb_ffi::RocksDBOptions(opt_ptr) = opts;
if opt_ptr.is_null() { if opt_ptr.is_null() {
panic!("Could not create rocksdb options".to_string()); panic!("Could not create rocksdb options".to_string());
} }
RocksdbOptions{inner: opts} RocksDBOptions{inner: opts}
} }
} }
@ -45,25 +45,25 @@ impl RocksdbOptions {
} }
} }
pub fn set_merge_operator(&self, mo: rocksdb_ffi::RocksdbMergeOperator) { pub fn set_merge_operator(&self, mo: rocksdb_ffi::RocksDBMergeOperator) {
unsafe { unsafe {
rocksdb_ffi::rocksdb_options_set_merge_operator(self.inner, mo); rocksdb_ffi::rocksdb_options_set_merge_operator(self.inner, mo);
} }
} }
} }
pub struct Rocksdb { pub struct RocksDB {
inner: rocksdb_ffi::RocksdbInstance, inner: rocksdb_ffi::RocksDBInstance,
} }
impl Rocksdb { impl RocksDB {
pub fn open_default(path: &str) -> Result<Rocksdb, String> { pub fn open_default(path: &str) -> Result<RocksDB, String> {
let opts = RocksdbOptions::new(); let opts = RocksDBOptions::new();
opts.create_if_missing(true); opts.create_if_missing(true);
Rocksdb::open(opts, path) RocksDB::open(opts, path)
} }
pub fn open(opts: RocksdbOptions, path: &str) -> Result<Rocksdb, String> { pub fn open(opts: RocksDBOptions, path: &str) -> Result<RocksDB, String> {
unsafe { unsafe {
let cpath = path.to_c_str(); let cpath = path.to_c_str();
let cpath_ptr = cpath.as_ptr(); let cpath_ptr = cpath.as_ptr();
@ -73,7 +73,7 @@ impl Rocksdb {
let err = 0 as *mut i8; let err = 0 as *mut i8;
let db = rocksdb_ffi::rocksdb_open(opts.inner, cpath_ptr, err); let db = rocksdb_ffi::rocksdb_open(opts.inner, cpath_ptr, err);
let rocksdb_ffi::RocksdbInstance(db_ptr) = db; let rocksdb_ffi::RocksDBInstance(db_ptr) = db;
if err.is_not_null() { if err.is_not_null() {
let cs = CString::new(err as *const i8, true); let cs = CString::new(err as *const i8, true);
match cs.as_str() { match cs.as_str() {
@ -86,7 +86,7 @@ impl Rocksdb {
if db_ptr.is_null() { if db_ptr.is_null() {
return Err("Could not initialize database.".to_string()); return Err("Could not initialize database.".to_string());
} }
Ok(Rocksdb{inner: db}) Ok(RocksDB{inner: db})
} }
} }
@ -116,12 +116,12 @@ impl Rocksdb {
} }
} }
pub fn get<'a>(&self, key: &[u8]) -> RocksdbResult<'a, RocksdbVector, String> { pub fn get<'a>(&self, key: &[u8]) -> RocksDBResult<'a, RocksDBVector, String> {
unsafe { unsafe {
let readopts = rocksdb_ffi::rocksdb_readoptions_create(); let readopts = rocksdb_ffi::rocksdb_readoptions_create();
let rocksdb_ffi::RocksdbReadOptions(read_opts_ptr) = readopts; let rocksdb_ffi::RocksDBReadOptions(read_opts_ptr) = readopts;
if read_opts_ptr.is_null() { if read_opts_ptr.is_null() {
return RocksdbResult::Error("Unable to create rocksdb read \ return RocksDBResult::Error("Unable to create rocksdb read \
options. This is a fairly trivial call, and its failure \ options. This is a fairly trivial call, and its failure \
may be indicative of a mis-compiled or mis-loaded rocksdb \ may be indicative of a mis-compiled or mis-loaded rocksdb \
library.".to_string()); library.".to_string());
@ -136,17 +136,17 @@ impl Rocksdb {
let cs = CString::new(err as *const i8, true); let cs = CString::new(err as *const i8, true);
match cs.as_str() { match cs.as_str() {
Some(error_string) => Some(error_string) =>
return RocksdbResult::Error(error_string.to_string()), return RocksDBResult::Error(error_string.to_string()),
None => None =>
return RocksdbResult::Error("Unable to get value from \ return RocksDBResult::Error("Unable to get value from \
rocksdb. (non-utf8 error received from underlying \ rocksdb. (non-utf8 error received from underlying \
library)".to_string()), library)".to_string()),
} }
} }
match val.is_null() { match val.is_null() {
true => RocksdbResult::None, true => RocksDBResult::None,
false => { false => {
RocksdbResult::Some(RocksdbVector::from_c(val, val_len)) RocksDBResult::Some(RocksDBVector::from_c(val, val_len))
} }
} }
} }
@ -182,14 +182,14 @@ impl Rocksdb {
} }
} }
pub struct RocksdbVector { pub struct RocksDBVector {
inner: CVec<u8>, inner: CVec<u8>,
} }
impl RocksdbVector { impl RocksDBVector {
pub fn from_c(val: *mut u8, val_len: size_t) -> RocksdbVector { pub fn from_c(val: *mut u8, val_len: size_t) -> RocksDBVector {
unsafe { unsafe {
RocksdbVector { RocksDBVector {
inner: inner:
CVec::new_with_dtor(val, val_len as uint, CVec::new_with_dtor(val, val_len as uint,
proc(){ libc::free(val as *mut c_void); }) proc(){ libc::free(val as *mut c_void); })
@ -206,73 +206,73 @@ impl RocksdbVector {
} }
} }
// RocksdbResult exists because of the inherent difference between // RocksDBResult exists because of the inherent difference between
// an operational failure and the absence of a possible result. // an operational failure and the absence of a possible result.
#[deriving(Clone, PartialEq, PartialOrd, Eq, Ord, Show)] #[deriving(Clone, PartialEq, PartialOrd, Eq, Ord, Show)]
pub enum RocksdbResult<'a,T,E> { pub enum RocksDBResult<'a,T,E> {
Some(T), Some(T),
None, None,
Error(E), Error(E),
} }
impl <'a,T,E> RocksdbResult<'a,T,E> { impl <'a,T,E> RocksDBResult<'a,T,E> {
#[unstable = "waiting for unboxed closures"] #[unstable = "waiting for unboxed closures"]
pub fn map<U>(self, f: |T| -> U) -> RocksdbResult<U,E> { pub fn map<U>(self, f: |T| -> U) -> RocksDBResult<U,E> {
match self { match self {
RocksdbResult::Some(x) => RocksdbResult::Some(f(x)), RocksDBResult::Some(x) => RocksDBResult::Some(f(x)),
RocksdbResult::None => RocksdbResult::None, RocksDBResult::None => RocksDBResult::None,
RocksdbResult::Error(e) => RocksdbResult::Error(e), RocksDBResult::Error(e) => RocksDBResult::Error(e),
} }
} }
pub fn unwrap(self) -> T { pub fn unwrap(self) -> T {
match self { match self {
RocksdbResult::Some(x) => x, RocksDBResult::Some(x) => x,
RocksdbResult::None => panic!("Attempted unwrap on RocksdbResult::None"), RocksDBResult::None => panic!("Attempted unwrap on RocksDBResult::None"),
RocksdbResult::Error(_) => panic!("Attempted unwrap on RocksdbResult::Error"), RocksDBResult::Error(_) => panic!("Attempted unwrap on RocksDBResult::Error"),
} }
} }
#[unstable = "waiting for unboxed closures"] #[unstable = "waiting for unboxed closures"]
pub fn on_error<U>(self, f: |E| -> U) -> RocksdbResult<T,U> { pub fn on_error<U>(self, f: |E| -> U) -> RocksDBResult<T,U> {
match self { match self {
RocksdbResult::Some(x) => RocksdbResult::Some(x), RocksDBResult::Some(x) => RocksDBResult::Some(x),
RocksdbResult::None => RocksdbResult::None, RocksDBResult::None => RocksDBResult::None,
RocksdbResult::Error(e) => RocksdbResult::Error(f(e)), RocksDBResult::Error(e) => RocksDBResult::Error(f(e)),
} }
} }
#[unstable = "waiting for unboxed closures"] #[unstable = "waiting for unboxed closures"]
pub fn on_absent(self, f: || -> ()) -> RocksdbResult<T,E> { pub fn on_absent(self, f: || -> ()) -> RocksDBResult<T,E> {
match self { match self {
RocksdbResult::Some(x) => RocksdbResult::Some(x), RocksDBResult::Some(x) => RocksDBResult::Some(x),
RocksdbResult::None => { RocksDBResult::None => {
f(); f();
RocksdbResult::None RocksDBResult::None
}, },
RocksdbResult::Error(e) => RocksdbResult::Error(e), RocksDBResult::Error(e) => RocksDBResult::Error(e),
} }
} }
pub fn is_some(self) -> bool { pub fn is_some(self) -> bool {
match self { match self {
RocksdbResult::Some(_) => true, RocksDBResult::Some(_) => true,
RocksdbResult::None => false, RocksDBResult::None => false,
RocksdbResult::Error(_) => false, RocksDBResult::Error(_) => false,
} }
} }
pub fn is_none(self) -> bool { pub fn is_none(self) -> bool {
match self { match self {
RocksdbResult::Some(_) => false, RocksDBResult::Some(_) => false,
RocksdbResult::None => true, RocksDBResult::None => true,
RocksdbResult::Error(_) => false, RocksDBResult::Error(_) => false,
} }
} }
pub fn is_error(self) -> bool { pub fn is_error(self) -> bool {
match self { match self {
RocksdbResult::Some(_) => false, RocksDBResult::Some(_) => false,
RocksdbResult::None => false, RocksDBResult::None => false,
RocksdbResult::Error(_) => true, RocksDBResult::Error(_) => true,
} }
} }
} }
@ -280,10 +280,10 @@ impl <'a,T,E> RocksdbResult<'a,T,E> {
#[allow(dead_code)] #[allow(dead_code)]
#[test] #[test]
fn external() { fn external() {
let db = Rocksdb::open_default("externaltest").unwrap(); let db = RocksDB::open_default("externaltest").unwrap();
let p = db.put(b"k1", b"v1111"); let p = db.put(b"k1", b"v1111");
assert!(p.is_ok()); assert!(p.is_ok());
let r: RocksdbResult<RocksdbVector, String> = db.get(b"k1"); let r: RocksDBResult<RocksDBVector, String> = db.get(b"k1");
assert!(r.unwrap().to_utf8().unwrap() == "v1111"); assert!(r.unwrap().to_utf8().unwrap() == "v1111");
assert!(db.delete(b"k1").is_ok()); assert!(db.delete(b"k1").is_ok());
assert!(db.get(b"k1").is_none()); assert!(db.get(b"k1").is_none());

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