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extra helpers for prefix

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This commit is contained in:
Nikolay Volf 2016-06-27 13:14:40 +02:00
parent e4763e90bc
commit 07098fd16f
1 changed files with 16 additions and 4 deletions
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20
util/src/kvdb.rs
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@ -76,7 +76,7 @@ impl CompactionProfile {
CompactionProfile {
initial_file_size: 192 * 1024 * 1024,
file_size_multiplier: 1,
write_rate_limit: Some(128 * 1024 * 1024),
write_rate_limit: Some(8 * 1024 * 1024),
}
}
}
@ -100,6 +100,7 @@ impl DatabaseConfig {
cache_size: Some(cache_size),
prefix_size: None,
max_open_files: -1,
compaction: CompactionProfile::default(),
}
}
@ -107,6 +108,11 @@ impl DatabaseConfig {
self.compaction = profile;
self
}
pub fn prefix(mut self, prefix_size: usize) -> Self {
self.prefix_size = Some(prefix_size);
self
}
}
impl Default for DatabaseConfig {
@ -115,6 +121,7 @@ impl Default for DatabaseConfig {
cache_size: None,
prefix_size: None,
max_open_files: -1,
compaction: CompactionProfile::default(),
}
}
}
@ -146,13 +153,18 @@ impl Database {
/// Open database file. Creates if it does not exist.
pub fn open(config: &DatabaseConfig, path: &str) -> Result<Database, String> {
let mut opts = Options::new();
try!(opts.set_parsed_options("rate_limiter_bytes_per_sec=256000000"));
if let Some(rate_limit) = config.compaction.write_rate_limit {
try!(opts.set_parsed_options(&format!("rate_limiter_bytes_per_sec={}", rate_limit)));
}
opts.set_max_open_files(config.max_open_files);
opts.create_if_missing(true);
opts.set_use_fsync(false);
// compaction settings
opts.set_compaction_style(DBCompactionStyle::DBUniversalCompaction);
opts.set_target_file_size_base(DB_FILE_SIZE_BASE);
opts.set_target_file_size_multiplier(DB_FILE_SIZE_MULTIPLIER);
opts.set_target_file_size_base(config.compaction.initial_file_size);
opts.set_target_file_size_multiplier(config.compaction.file_size_multiplier);
opts.set_max_background_flushes(DB_BACKGROUND_FLUSHES);
opts.set_max_background_compactions(DB_BACKGROUND_COMPACTIONS);
if let Some(cache_size) = config.cache_size {