Merge pull request #238 from romanz/set-options

Allow setting options on the DB
master
Jordan Terrell 6 years ago committed by GitHub
commit c77e301d22
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GPG Key ID: 4AEE18F83AFDEB23
  1. 66
      src/db.rs

@ -1123,6 +1123,35 @@ impl DB {
); );
} }
} }
pub fn set_options(&self, opts: &[(&str, &str)]) -> Result<(), Error> {
let copts = opts
.into_iter()
.map(|(name, value)| {
let cname = match CString::new(name.as_bytes()) {
Ok(cname) => cname,
Err(e) => return Err(Error::new(format!("Invalid option name `{}`", e))),
};
let cvalue = match CString::new(value.as_bytes()) {
Ok(cvalue) => cvalue,
Err(e) => return Err(Error::new(format!("Invalid option value: `{}`", e))),
};
Ok((cname, cvalue))
})
.collect::<Result<Vec<(CString, CString)>, Error>>()?;
let cnames: Vec<*const c_char> = copts.iter().map(|opt| opt.0.as_ptr()).collect();
let cvalues: Vec<*const c_char> = copts.iter().map(|opt| opt.1.as_ptr()).collect();
let count = opts.len() as i32;
Ok(unsafe {
ffi_try!(ffi::rocksdb_set_options(
self.inner,
count,
cnames.as_ptr(),
cvalues.as_ptr(),
))
})
}
} }
impl WriteBatch { impl WriteBatch {
@ -1497,3 +1526,40 @@ fn snapshot_test() {
let opts = Options::default(); let opts = Options::default();
assert!(DB::destroy(&opts, path).is_ok()); assert!(DB::destroy(&opts, path).is_ok());
} }
#[test]
fn set_option_test() {
let path = "_rust_rocksdb_set_optionstest";
{
let db = DB::open_default(path).unwrap();
// set an option to valid values
assert!(db
.set_options(&[("disable_auto_compactions", "true")])
.is_ok());
assert!(db
.set_options(&[("disable_auto_compactions", "false")])
.is_ok());
// invalid names/values should result in an error
assert!(db
.set_options(&[("disable_auto_compactions", "INVALID_VALUE")])
.is_err());
assert!(db
.set_options(&[("INVALID_NAME", "INVALID_VALUE")])
.is_err());
// option names/values must not contain NULLs
assert!(db
.set_options(&[("disable_auto_compactions", "true\0")])
.is_err());
assert!(db
.set_options(&[("disable_auto_compactions\0", "true")])
.is_err());
// empty options are not allowed
assert!(db.set_options(&[]).is_err());
// multiple options can be set in a single API call
let multiple_options = [
("paranoid_file_checks", "true"),
("report_bg_io_stats", "true"),
];
db.set_options(&multiple_options).unwrap();
}
}

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