Initial column family (broken) stubs.

src/ffi.rs

@@ -353,9 +353,28 @@ extern {
         name_fn: extern fn(*mut c_void) -> *const c_char
     ) -> RocksDBComparator;
     pub fn rocksdb_comparator_destroy(cmp: RocksDBComparator);
+
+    // Column Family
+    pub fn rocksdb_open_column_families(options: RocksDBOptions,
+                                        path: *const i8,
+                                        num_column_families: c_int,
+                                        column_family_names: *const *const i8,
+                                        column_family_options: *const [RocksDBOptions],
+                                        column_family_handles: *mut *const RocksDBCFHandle,
+                                        err: *mut *const i8
+                                        ) -> RocksDBInstance;
+    pub fn rocksdb_create_column_family(db: RocksDBInstance,
+                                        column_family_options: RocksDBOptions,
+                                        column_family_name: *const i8,
+                                        err: *mut *const i8
+                                        ) -> RocksDBCFHandle;
+    pub fn rocksdb_drop_column_family(db: RocksDBInstance,
+                                      column_family_handle: *const RocksDBCFHandle,
+                                      err: *mut *const i8);
+    pub fn rocksdb_column_family_handle_destroy(column_family_handle: *mut *const RocksDBCFHandle);
+
 }
 
-#[allow(dead_code)]
 #[test]
 fn internal() {
     unsafe {

src/lib.rs

@@ -18,7 +18,9 @@
 #![feature(libc)]
 #![feature(unique)]
 #![feature(path_ext)]
+#![feature(convert)]
 #![feature(raw)]
+#![allow(dead_code)]
 
 pub use ffi as rocksdb_ffi;
 pub use ffi::{new_bloom_filter, RocksDBCompactionStyle, RocksDBComparator};

src/rocksdb.rs

@@ -23,13 +23,13 @@ use std::path::Path;
 use std::ptr::Unique;
 use std::slice;
 use std::str::from_utf8;
-use std::marker::PhantomData;
 
 use rocksdb_ffi;
 use rocksdb_options::Options;
 
 pub struct RocksDB {
     inner: rocksdb_ffi::RocksDBInstance,
+    cfs: Vec<rocksdb_ffi::RocksDBCFHandle>,
 }
 
 unsafe impl Send for RocksDB {}
@@ -184,6 +184,10 @@ impl RocksDB {
     }
 
     pub fn open(opts: &Options, path: &str) -> Result<RocksDB, String> {
+        RocksDB::open_cf(opts, path, vec![])
+    }
+
+    pub fn open_cf(opts: &Options, path: &str, mut cfs: Vec<&str>) -> Result<RocksDB, String> {
         let cpath = match CString::new(path.as_bytes()) {
             Ok(c) => c,
             Err(_) =>
@@ -203,18 +207,49 @@ impl RocksDB {
         let err_ptr: *mut *const i8 = &mut err;
         let db: rocksdb_ffi::RocksDBInstance;
 
+        if cfs.len() == 0 {
             unsafe {
                 db = rocksdb_ffi::rocksdb_open(opts.inner, cpath_ptr, err_ptr);
             }
+        } else {
+            let nfam = cfs.len();
+            let mut cfnames: Vec<*const i8> = vec![];
+            let mut cfhandles: Vec<rocksdb_ffi::RocksDBCFHandle> = vec![];
+            let mut cfopts: Vec<rocksdb_ffi::RocksDBOptions> = vec![];
+
+            cfs.push("default");
+            for name in cfs {
+                match CString::new(name.as_bytes()) {
+                    Ok(c) => {
+                        cfnames.push(c.as_ptr());
+                        cfhandles.push(rocksdb_ffi::RocksDBCFHandle(0 as *mut c_void));
+                        cfopts.push(Options::new().inner);
+                    },
+                    Err(_) =>
+                        return Err("Failed to convert path to CString when opening rocksdb".to_string()),
+                }
+            };
+            unsafe {
+                println!("1!");
+                println!("nfam: {}", nfam);
+                db = rocksdb_ffi::rocksdb_open_column_families(opts.inner, cpath_ptr,
+                                                               nfam as libc::c_int,
+                                                               cfnames.as_slice().as_ptr(),
+                                                               cfopts.as_slice(),
+                                                               cfhandles.as_ptr() as *mut *const rocksdb_ffi::RocksDBCFHandle,
+                                                               err_ptr);
+                println!("2!");
+            }
+        }
 
         if !err.is_null() {
             return Err(error_message(err));
         }
-        let rocksdb_ffi::RocksDBInstance(db_ptr) = db;
-        if db_ptr.is_null() {
+        if db.0.is_null() {
             return Err("Could not initialize database.".to_string());
         }
-        Ok(RocksDB { inner: db })
+
+        Ok(RocksDB { inner: db, cfs: vec![] })
     }
 
     pub fn destroy(opts: &Options, path: &str) -> Result<(), String> {
@@ -300,6 +335,24 @@ impl RocksDB {
         }
     }
 
+    pub fn create_cf(&mut self, name: &str, opts: &Options) -> Result<(), String> {
+        let cname = match CString::new(name.as_bytes()) {
+            Ok(c) => c,
+            Err(_) =>
+                return Err("Failed to convert path to CString when opening rocksdb".to_string()),
+        };
+        let cname_ptr = cname.as_ptr();
+        let mut err: *const i8 = 0 as *const i8;
+        let err_ptr: *mut *const i8 = &mut err;
+        unsafe {
+            rocksdb_ffi::rocksdb_create_column_family(self.inner, opts.inner, cname_ptr, err_ptr);
+        }
+        if !err.is_null() {
+            return Err(error_message(err));
+        }
+        Ok(())
+    }
+
     pub fn iterator(&self) -> DBIterator {
         let opts = ReadOptions::new();
         DBIterator::new(&self, &opts)
@@ -546,7 +599,6 @@ impl <T, E> RocksDBResult<T, E> {
     }
 }
 
-#[allow(dead_code)]
 #[test]
 fn external() {
     let path = "_rust_rocksdb_externaltest";

test/test.rs

@@ -2,3 +2,4 @@ extern crate rocksdb;
 
 mod test_iterator;
 mod test_multithreaded;
+mod test_column_family;

test/test_column_family.rs

+/*
+   Copyright 2014 Tyler Neely
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+use rocksdb::{Options, RocksDB, Writable, Direction};
+
+#[test]
+pub fn test_column_family() {
+    let path = "_rust_rocksdb_cftest";
+
+    // should be able to create column families
+    {
+        let mut db = RocksDB::open_default(path).unwrap();
+        let opts = Options::new();
+        match db.create_cf("cf1", &opts) {
+            Ok(_) => println!("cf1 created successfully"),
+            Err(e) => {
+                panic!("could not create column family: {}", e);
+            },
+        }
+    }
+
+    // should fail to open db without specifying same column families
+    {
+        match RocksDB::open_default(path) {
+            Ok(_) => panic!("should not have opened DB successfully without specifying column
+            families"),
+            Err(e) => assert!(e.starts_with("Invalid argument: You have to open all column families.")),
+        }
+    }
+
+    // should properly open db when specyfing all column families
+    {
+        match RocksDB::open_cf(&Options::new(), path, vec!["cf1"]) {
+            Ok(_) => println!("successfully opened db with column family"),
+            Err(e) => panic!("failed to open db with column family"),
+        }
+
+    }
+    // should be able to write, read, merge, batch, and iterate over a cf
+    {
+
+    }
+
+    assert!(RocksDB::destroy(&Options::new(), path).is_ok());
+}

test/test_multithreaded.rs

@@ -2,11 +2,12 @@ use rocksdb::{Options, RocksDB, Writable, Direction, RocksDBResult};
 use std::thread::{self, Builder};
 use std::sync::Arc;
 
-const N: usize = 1000_000;
+const N: usize = 100_000;
 
 #[test]
 pub fn test_multithreaded() {
     let path = "_rust_rocksdb_multithreadtest";
+    {
         let db = RocksDB::open_default(path).unwrap();
         let db = Arc::new(db);
 
@@ -45,4 +46,6 @@ pub fn test_multithreaded() {
         j1.join();
         j2.join();
         j3.join();
+    }
+    assert!(RocksDB::destroy(&Options::new(), path).is_ok());
 }