Struct rocksdb::DB [−][src]
A RocksDB database.
See crate level documentation for a simple usage example.
Implementations
impl DB
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pub fn open_default<P: AsRef<Path>>(path: P) -> Result<DB, Error>
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Opens a database with default options.
pub fn open<P: AsRef<Path>>(opts: &Options, path: P) -> Result<DB, Error>
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Opens the database with the specified options.
pub fn open_for_read_only<P: AsRef<Path>>(
opts: &Options,
path: P,
error_if_log_file_exist: bool
) -> Result<DB, Error>
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opts: &Options,
path: P,
error_if_log_file_exist: bool
) -> Result<DB, Error>
Opens the database for read only with the specified options.
pub fn open_as_secondary<P: AsRef<Path>>(
opts: &Options,
primary_path: P,
secondary_path: P
) -> Result<DB, Error>
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opts: &Options,
primary_path: P,
secondary_path: P
) -> Result<DB, Error>
Opens the database as a secondary.
pub fn open_with_ttl<P: AsRef<Path>>(
opts: &Options,
path: P,
ttl: Duration
) -> Result<DB, Error>
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opts: &Options,
path: P,
ttl: Duration
) -> Result<DB, Error>
Opens the database with a Time to Live compaction filter.
pub fn open_cf<P, I, N>(opts: &Options, path: P, cfs: I) -> Result<DB, Error> where
P: AsRef<Path>,
I: IntoIterator<Item = N>,
N: AsRef<str>,
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P: AsRef<Path>,
I: IntoIterator<Item = N>,
N: AsRef<str>,
Opens a database with the given database options and column family names.
Column families opened using this function will be created with default Options
.
pub fn open_cf_for_read_only<P, I, N>(
opts: &Options,
path: P,
cfs: I,
error_if_log_file_exist: bool
) -> Result<DB, Error> where
P: AsRef<Path>,
I: IntoIterator<Item = N>,
N: AsRef<str>,
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opts: &Options,
path: P,
cfs: I,
error_if_log_file_exist: bool
) -> Result<DB, Error> where
P: AsRef<Path>,
I: IntoIterator<Item = N>,
N: AsRef<str>,
Opens a database for read only with the given database options and column family names.
pub fn open_cf_as_secondary<P, I, N>(
opts: &Options,
primary_path: P,
secondary_path: P,
cfs: I
) -> Result<DB, Error> where
P: AsRef<Path>,
I: IntoIterator<Item = N>,
N: AsRef<str>,
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opts: &Options,
primary_path: P,
secondary_path: P,
cfs: I
) -> Result<DB, Error> where
P: AsRef<Path>,
I: IntoIterator<Item = N>,
N: AsRef<str>,
Opens the database as a secondary with the given database options and column family names.
pub fn open_cf_descriptors<P, I>(
opts: &Options,
path: P,
cfs: I
) -> Result<DB, Error> where
P: AsRef<Path>,
I: IntoIterator<Item = ColumnFamilyDescriptor>,
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opts: &Options,
path: P,
cfs: I
) -> Result<DB, Error> where
P: AsRef<Path>,
I: IntoIterator<Item = ColumnFamilyDescriptor>,
Opens a database with the given database options and column family descriptors.
pub fn list_cf<P: AsRef<Path>>(
opts: &Options,
path: P
) -> Result<Vec<String>, Error>
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opts: &Options,
path: P
) -> Result<Vec<String>, Error>
pub fn destroy<P: AsRef<Path>>(opts: &Options, path: P) -> Result<(), Error>
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pub fn repair<P: AsRef<Path>>(opts: &Options, path: P) -> Result<(), Error>
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pub fn path(&self) -> &Path
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pub fn flush_opt(&self, flushopts: &FlushOptions) -> Result<(), Error>
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Flushes database memtables to SST files on the disk.
pub fn flush(&self) -> Result<(), Error>
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Flushes database memtables to SST files on the disk using default options.
pub fn flush_cf_opt(
&self,
cf: &ColumnFamily,
flushopts: &FlushOptions
) -> Result<(), Error>
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&self,
cf: &ColumnFamily,
flushopts: &FlushOptions
) -> Result<(), Error>
Flushes database memtables to SST files on the disk for a given column family.
pub fn flush_cf(&self, cf: &ColumnFamily) -> Result<(), Error>
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Flushes database memtables to SST files on the disk for a given column family using default options.
pub fn write_opt(
&self,
batch: WriteBatch,
writeopts: &WriteOptions
) -> Result<(), Error>
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&self,
batch: WriteBatch,
writeopts: &WriteOptions
) -> Result<(), Error>
pub fn write(&self, batch: WriteBatch) -> Result<(), Error>
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pub fn write_without_wal(&self, batch: WriteBatch) -> Result<(), Error>
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pub fn get_opt<K: AsRef<[u8]>>(
&self,
key: K,
readopts: &ReadOptions
) -> Result<Option<Vec<u8>>, Error>
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&self,
key: K,
readopts: &ReadOptions
) -> Result<Option<Vec<u8>>, Error>
Return the bytes associated with a key value with read options. If you only intend to use
the vector returned temporarily, consider using get_pinned_opt
to avoid unnecessary memory copy.
pub fn get<K: AsRef<[u8]>>(&self, key: K) -> Result<Option<Vec<u8>>, Error>
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Return the bytes associated with a key value. If you only intend to use the vector returned
temporarily, consider using get_pinned
to avoid unnecessary memory
copy.
pub fn get_cf_opt<K: AsRef<[u8]>>(
&self,
cf: &ColumnFamily,
key: K,
readopts: &ReadOptions
) -> Result<Option<Vec<u8>>, Error>
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&self,
cf: &ColumnFamily,
key: K,
readopts: &ReadOptions
) -> Result<Option<Vec<u8>>, Error>
Return the bytes associated with a key value and the given column family with read options.
If you only intend to use the vector returned temporarily, consider using
get_pinned_cf_opt
to avoid unnecessary memory.
pub fn get_cf<K: AsRef<[u8]>>(
&self,
cf: &ColumnFamily,
key: K
) -> Result<Option<Vec<u8>>, Error>
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&self,
cf: &ColumnFamily,
key: K
) -> Result<Option<Vec<u8>>, Error>
Return the bytes associated with a key value and the given column family. If you only
intend to use the vector returned temporarily, consider using
get_pinned_cf
to avoid unnecessary memory.
pub fn get_pinned_opt<K: AsRef<[u8]>>(
&self,
key: K,
readopts: &ReadOptions
) -> Result<Option<DBPinnableSlice<'_>>, Error>
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&self,
key: K,
readopts: &ReadOptions
) -> Result<Option<DBPinnableSlice<'_>>, Error>
Return the value associated with a key using RocksDB’s PinnableSlice so as to avoid unnecessary memory copy.
pub fn get_pinned<K: AsRef<[u8]>>(
&self,
key: K
) -> Result<Option<DBPinnableSlice<'_>>, Error>
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&self,
key: K
) -> Result<Option<DBPinnableSlice<'_>>, Error>
Return the value associated with a key using RocksDB’s PinnableSlice so as to avoid unnecessary memory copy. Similar to get_pinned_opt but leverages default options.
pub fn get_pinned_cf_opt<K: AsRef<[u8]>>(
&self,
cf: &ColumnFamily,
key: K,
readopts: &ReadOptions
) -> Result<Option<DBPinnableSlice<'_>>, Error>
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&self,
cf: &ColumnFamily,
key: K,
readopts: &ReadOptions
) -> Result<Option<DBPinnableSlice<'_>>, Error>
Return the value associated with a key using RocksDB’s PinnableSlice so as to avoid unnecessary memory copy. Similar to get_pinned_opt but allows specifying ColumnFamily
pub fn get_pinned_cf<K: AsRef<[u8]>>(
&self,
cf: &ColumnFamily,
key: K
) -> Result<Option<DBPinnableSlice<'_>>, Error>
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&self,
cf: &ColumnFamily,
key: K
) -> Result<Option<DBPinnableSlice<'_>>, Error>
Return the value associated with a key using RocksDB’s PinnableSlice so as to avoid unnecessary memory copy. Similar to get_pinned_cf_opt but leverages default options.
pub fn multi_get<K, I>(&self, keys: I) -> Result<Vec<Vec<u8>>, Error> where
K: AsRef<[u8]>,
I: IntoIterator<Item = K>,
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K: AsRef<[u8]>,
I: IntoIterator<Item = K>,
Return the values associated with the given keys.
pub fn multi_get_opt<K, I>(
&self,
keys: I,
readopts: &ReadOptions
) -> Result<Vec<Vec<u8>>, Error> where
K: AsRef<[u8]>,
I: IntoIterator<Item = K>,
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&self,
keys: I,
readopts: &ReadOptions
) -> Result<Vec<Vec<u8>>, Error> where
K: AsRef<[u8]>,
I: IntoIterator<Item = K>,
Return the values associated with the given keys using read options.
pub fn multi_get_cf<'c, K, I>(&self, keys: I) -> Result<Vec<Vec<u8>>, Error> where
K: AsRef<[u8]>,
I: IntoIterator<Item = (&'c ColumnFamily, K)>,
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K: AsRef<[u8]>,
I: IntoIterator<Item = (&'c ColumnFamily, K)>,
Return the values associated with the given keys and column families.
pub fn multi_get_cf_opt<'c, K, I>(
&self,
keys: I,
readopts: &ReadOptions
) -> Result<Vec<Vec<u8>>, Error> where
K: AsRef<[u8]>,
I: IntoIterator<Item = (&'c ColumnFamily, K)>,
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&self,
keys: I,
readopts: &ReadOptions
) -> Result<Vec<Vec<u8>>, Error> where
K: AsRef<[u8]>,
I: IntoIterator<Item = (&'c ColumnFamily, K)>,
Return the values associated with the given keys and column families using read options.
pub fn create_cf<N: AsRef<str>>(
&mut self,
name: N,
opts: &Options
) -> Result<(), Error>
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&mut self,
name: N,
opts: &Options
) -> Result<(), Error>
pub fn drop_cf(&mut self, name: &str) -> Result<(), Error>
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pub fn cf_handle(&self, name: &str) -> Option<&ColumnFamily>
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Return the underlying column family handle.
pub fn iterator<'a: 'b, 'b>(&'a self, mode: IteratorMode<'_>) -> DBIterator<'b>ⓘ
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pub fn iterator_opt<'a: 'b, 'b>(
&'a self,
mode: IteratorMode<'_>,
readopts: ReadOptions
) -> DBIterator<'b>ⓘ
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&'a self,
mode: IteratorMode<'_>,
readopts: ReadOptions
) -> DBIterator<'b>ⓘ
pub fn iterator_cf_opt<'a: 'b, 'b>(
&'a self,
cf_handle: &ColumnFamily,
readopts: ReadOptions,
mode: IteratorMode<'_>
) -> DBIterator<'b>ⓘ
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&'a self,
cf_handle: &ColumnFamily,
readopts: ReadOptions,
mode: IteratorMode<'_>
) -> DBIterator<'b>ⓘ
Opens an iterator using the provided ReadOptions. This is used when you want to iterate over a specific ColumnFamily with a modified ReadOptions
pub fn full_iterator<'a: 'b, 'b>(
&'a self,
mode: IteratorMode<'_>
) -> DBIterator<'b>ⓘ
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&'a self,
mode: IteratorMode<'_>
) -> DBIterator<'b>ⓘ
Opens an iterator with set_total_order_seek
enabled.
This must be used to iterate across prefixes when set_memtable_factory
has been called
with a Hash-based implementation.
pub fn prefix_iterator<'a: 'b, 'b, P: AsRef<[u8]>>(
&'a self,
prefix: P
) -> DBIterator<'b>ⓘ
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&'a self,
prefix: P
) -> DBIterator<'b>ⓘ
pub fn iterator_cf<'a: 'b, 'b>(
&'a self,
cf_handle: &ColumnFamily,
mode: IteratorMode<'_>
) -> DBIterator<'b>ⓘ
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&'a self,
cf_handle: &ColumnFamily,
mode: IteratorMode<'_>
) -> DBIterator<'b>ⓘ
pub fn full_iterator_cf<'a: 'b, 'b>(
&'a self,
cf_handle: &ColumnFamily,
mode: IteratorMode<'_>
) -> DBIterator<'b>ⓘ
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&'a self,
cf_handle: &ColumnFamily,
mode: IteratorMode<'_>
) -> DBIterator<'b>ⓘ
pub fn prefix_iterator_cf<'a: 'b, 'b, P: AsRef<[u8]>>(
&'a self,
cf_handle: &ColumnFamily,
prefix: P
) -> DBIterator<'b>ⓘ
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&'a self,
cf_handle: &ColumnFamily,
prefix: P
) -> DBIterator<'b>ⓘ
pub fn raw_iterator<'a: 'b, 'b>(&'a self) -> DBRawIterator<'b>
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Opens a raw iterator over the database, using the default read options
pub fn raw_iterator_cf<'a: 'b, 'b>(
&'a self,
cf_handle: &ColumnFamily
) -> DBRawIterator<'b>
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&'a self,
cf_handle: &ColumnFamily
) -> DBRawIterator<'b>
Opens a raw iterator over the given column family, using the default read options
pub fn raw_iterator_opt<'a: 'b, 'b>(
&'a self,
readopts: ReadOptions
) -> DBRawIterator<'b>
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&'a self,
readopts: ReadOptions
) -> DBRawIterator<'b>
Opens a raw iterator over the database, using the given read options
pub fn raw_iterator_cf_opt<'a: 'b, 'b>(
&'a self,
cf_handle: &ColumnFamily,
readopts: ReadOptions
) -> DBRawIterator<'b>
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&'a self,
cf_handle: &ColumnFamily,
readopts: ReadOptions
) -> DBRawIterator<'b>
Opens a raw iterator over the given column family, using the given read options
pub fn snapshot(&self) -> Snapshot<'_>
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pub fn put_opt<K, V>(
&self,
key: K,
value: V,
writeopts: &WriteOptions
) -> Result<(), Error> where
K: AsRef<[u8]>,
V: AsRef<[u8]>,
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&self,
key: K,
value: V,
writeopts: &WriteOptions
) -> Result<(), Error> where
K: AsRef<[u8]>,
V: AsRef<[u8]>,
pub fn put_cf_opt<K, V>(
&self,
cf: &ColumnFamily,
key: K,
value: V,
writeopts: &WriteOptions
) -> Result<(), Error> where
K: AsRef<[u8]>,
V: AsRef<[u8]>,
[src]
&self,
cf: &ColumnFamily,
key: K,
value: V,
writeopts: &WriteOptions
) -> Result<(), Error> where
K: AsRef<[u8]>,
V: AsRef<[u8]>,
pub fn merge_opt<K, V>(
&self,
key: K,
value: V,
writeopts: &WriteOptions
) -> Result<(), Error> where
K: AsRef<[u8]>,
V: AsRef<[u8]>,
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&self,
key: K,
value: V,
writeopts: &WriteOptions
) -> Result<(), Error> where
K: AsRef<[u8]>,
V: AsRef<[u8]>,
pub fn merge_cf_opt<K, V>(
&self,
cf: &ColumnFamily,
key: K,
value: V,
writeopts: &WriteOptions
) -> Result<(), Error> where
K: AsRef<[u8]>,
V: AsRef<[u8]>,
[src]
&self,
cf: &ColumnFamily,
key: K,
value: V,
writeopts: &WriteOptions
) -> Result<(), Error> where
K: AsRef<[u8]>,
V: AsRef<[u8]>,
pub fn delete_opt<K: AsRef<[u8]>>(
&self,
key: K,
writeopts: &WriteOptions
) -> Result<(), Error>
[src]
&self,
key: K,
writeopts: &WriteOptions
) -> Result<(), Error>
pub fn delete_cf_opt<K: AsRef<[u8]>>(
&self,
cf: &ColumnFamily,
key: K,
writeopts: &WriteOptions
) -> Result<(), Error>
[src]
&self,
cf: &ColumnFamily,
key: K,
writeopts: &WriteOptions
) -> Result<(), Error>
pub fn delete_range_cf_opt<K: AsRef<[u8]>>(
&self,
cf: &ColumnFamily,
from: K,
to: K,
writeopts: &WriteOptions
) -> Result<(), Error>
[src]
&self,
cf: &ColumnFamily,
from: K,
to: K,
writeopts: &WriteOptions
) -> Result<(), Error>
Removes the database entries in the range ["from", "to")
using given write options.
pub fn put<K, V>(&self, key: K, value: V) -> Result<(), Error> where
K: AsRef<[u8]>,
V: AsRef<[u8]>,
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K: AsRef<[u8]>,
V: AsRef<[u8]>,
pub fn put_cf<K, V>(
&self,
cf: &ColumnFamily,
key: K,
value: V
) -> Result<(), Error> where
K: AsRef<[u8]>,
V: AsRef<[u8]>,
[src]
&self,
cf: &ColumnFamily,
key: K,
value: V
) -> Result<(), Error> where
K: AsRef<[u8]>,
V: AsRef<[u8]>,
pub fn merge<K, V>(&self, key: K, value: V) -> Result<(), Error> where
K: AsRef<[u8]>,
V: AsRef<[u8]>,
[src]
K: AsRef<[u8]>,
V: AsRef<[u8]>,
pub fn merge_cf<K, V>(
&self,
cf: &ColumnFamily,
key: K,
value: V
) -> Result<(), Error> where
K: AsRef<[u8]>,
V: AsRef<[u8]>,
[src]
&self,
cf: &ColumnFamily,
key: K,
value: V
) -> Result<(), Error> where
K: AsRef<[u8]>,
V: AsRef<[u8]>,
pub fn delete<K: AsRef<[u8]>>(&self, key: K) -> Result<(), Error>
[src]
pub fn delete_cf<K: AsRef<[u8]>>(
&self,
cf: &ColumnFamily,
key: K
) -> Result<(), Error>
[src]
&self,
cf: &ColumnFamily,
key: K
) -> Result<(), Error>
pub fn delete_range_cf<K: AsRef<[u8]>>(
&self,
cf: &ColumnFamily,
from: K,
to: K
) -> Result<(), Error>
[src]
&self,
cf: &ColumnFamily,
from: K,
to: K
) -> Result<(), Error>
Removes the database entries in the range ["from", "to")
using default write options.
pub fn compact_range<S: AsRef<[u8]>, E: AsRef<[u8]>>(
&self,
start: Option<S>,
end: Option<E>
)
[src]
&self,
start: Option<S>,
end: Option<E>
)
Runs a manual compaction on the Range of keys given. This is not likely to be needed for typical usage.
pub fn compact_range_opt<S: AsRef<[u8]>, E: AsRef<[u8]>>(
&self,
start: Option<S>,
end: Option<E>,
opts: &CompactOptions
)
[src]
&self,
start: Option<S>,
end: Option<E>,
opts: &CompactOptions
)
Same as compact_range
but with custom options.
pub fn compact_range_cf<S: AsRef<[u8]>, E: AsRef<[u8]>>(
&self,
cf: &ColumnFamily,
start: Option<S>,
end: Option<E>
)
[src]
&self,
cf: &ColumnFamily,
start: Option<S>,
end: Option<E>
)
Runs a manual compaction on the Range of keys given on the given column family. This is not likely to be needed for typical usage.
pub fn compact_range_cf_opt<S: AsRef<[u8]>, E: AsRef<[u8]>>(
&self,
cf: &ColumnFamily,
start: Option<S>,
end: Option<E>,
opts: &CompactOptions
)
[src]
&self,
cf: &ColumnFamily,
start: Option<S>,
end: Option<E>,
opts: &CompactOptions
)
Same as compact_range_cf
but with custom options.
pub fn set_options(&self, opts: &[(&str, &str)]) -> Result<(), Error>
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pub fn set_options_cf(
&self,
cf_handle: &ColumnFamily,
opts: &[(&str, &str)]
) -> Result<(), Error>
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&self,
cf_handle: &ColumnFamily,
opts: &[(&str, &str)]
) -> Result<(), Error>
pub fn property_value(&self, name: &str) -> Result<Option<String>, Error>
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Retrieves a RocksDB property by name.
Full list of properties could be find here.
pub fn property_value_cf(
&self,
cf: &ColumnFamily,
name: &str
) -> Result<Option<String>, Error>
[src]
&self,
cf: &ColumnFamily,
name: &str
) -> Result<Option<String>, Error>
Retrieves a RocksDB property by name, for a specific column family.
Full list of properties could be find here.
pub fn property_int_value(&self, name: &str) -> Result<Option<u64>, Error>
[src]
Retrieves a RocksDB property and casts it to an integer.
Full list of properties that return int values could be find here.
pub fn property_int_value_cf(
&self,
cf: &ColumnFamily,
name: &str
) -> Result<Option<u64>, Error>
[src]
&self,
cf: &ColumnFamily,
name: &str
) -> Result<Option<u64>, Error>
Retrieves a RocksDB property for a specific column family and casts it to an integer.
Full list of properties that return int values could be find here.
pub fn latest_sequence_number(&self) -> u64
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The sequence number of the most recent transaction.
pub fn get_updates_since(&self, seq_number: u64) -> Result<DBWALIterator, Error>
[src]
Iterate over batches of write operations since a given sequence.
Produce an iterator that will provide the batches of write operations
that have occurred since the given sequence (see
latest_sequence_number()
). Use the provided iterator to retrieve each
(u64
, WriteBatch
) tuple, and then gather the individual puts and
deletes using the WriteBatch::iterate()
function.
Calling get_updates_since()
with a sequence number that is out of
bounds will return an error.
pub fn try_catch_up_with_primary(&self) -> Result<(), Error>
[src]
Tries to catch up with the primary by reading as much as possible from the log files.
pub fn ingest_external_file<P: AsRef<Path>>(
&self,
paths: Vec<P>
) -> Result<(), Error>
[src]
&self,
paths: Vec<P>
) -> Result<(), Error>
Loads a list of external SST files created with SstFileWriter into the DB with default opts
pub fn ingest_external_file_opts<P: AsRef<Path>>(
&self,
opts: &IngestExternalFileOptions,
paths: Vec<P>
) -> Result<(), Error>
[src]
&self,
opts: &IngestExternalFileOptions,
paths: Vec<P>
) -> Result<(), Error>
Loads a list of external SST files created with SstFileWriter into the DB
pub fn ingest_external_file_cf<P: AsRef<Path>>(
&self,
cf: &ColumnFamily,
paths: Vec<P>
) -> Result<(), Error>
[src]
&self,
cf: &ColumnFamily,
paths: Vec<P>
) -> Result<(), Error>
Loads a list of external SST files created with SstFileWriter into the DB for given Column Family with default opts
pub fn ingest_external_file_cf_opts<P: AsRef<Path>>(
&self,
cf: &ColumnFamily,
opts: &IngestExternalFileOptions,
paths: Vec<P>
) -> Result<(), Error>
[src]
&self,
cf: &ColumnFamily,
opts: &IngestExternalFileOptions,
paths: Vec<P>
) -> Result<(), Error>
Loads a list of external SST files created with SstFileWriter into the DB for given Column Family
pub fn live_files(&self) -> Result<Vec<LiveFile>, Error>
[src]
Returns a list of all table files with their level, start key and end key
pub fn delete_file_in_range<K: AsRef<[u8]>>(
&self,
from: K,
to: K
) -> Result<(), Error>
[src]
&self,
from: K,
to: K
) -> Result<(), Error>
Delete sst files whose keys are entirely in the given range.
Could leave some keys in the range which are in files which are not entirely in the range.
Note: L0 files are left regardless of whether they’re in the range.
Snapshots before the delete might not see the data in the given range.
pub fn delete_file_in_range_cf<K: AsRef<[u8]>>(
&self,
cf: &ColumnFamily,
from: K,
to: K
) -> Result<(), Error>
[src]
&self,
cf: &ColumnFamily,
from: K,
to: K
) -> Result<(), Error>
Same as delete_file_in_range
but only for specific column family
pub fn cancel_all_background_work(&self, wait: bool)
[src]
Request stopping background work, if wait is true wait until it’s done.
Trait Implementations
Auto Trait Implementations
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
[src]
T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
pub fn borrow_mut(&mut self) -> &mut T
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impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,