Changelog

Soundness issue fixed - the various iterators no longer implement std::iter::Iterator, but instead a new LendingIterator trait. For migration guide, see README.
Many types now take a lifetime argument, e.g., Value is now Value<'a>, ResultIterator is now ResultIterator<'a>.
RowIterator no longer implements Display (since it would consume the iterator); however Row does.
Result::into_iter() and Row::into_iter() are now both iter(), since they do not consume their argument.
TupleIterator is removed - it was never used, since you use the set iterator (Value::get_set()) for lists, sets, and tuples.
ConstDataType::sub_data_by_name and ConstDataType::sub_type_name now take &self rather than an explicit argument.
FunctionMeta::argument now returns the name and type, rather than just ().
The underlying raw pointer is no longer exposed as a field of Cluster, ResultIterator, and RowIterator.
Many types now implement Sync as well as Send.

2.0.1 - 2023-06-08

Fixed

Fix bug where connect_keyspace was not Send
Fixed some rustc and clippy warnings.

2.0.0 - 2023-03-13

Changed

All functions were converted to be asynchronous. This allows for better performance, as asynchronous functions can run in parallel and make better use of system resources.
The macro stmt! was changed from a macro to a function, named statement. This change fundamentally alters how the API is used and was made to provide a more intuitive and clear interface for users.
The wait function was replaced with await from the tokio runtime. This change was made to take advantage of the asynchronous capabilities of the tokio runtime, allowing for better performance and scalability in Cassandra operations.

Fixed

The main development branch is now main not master. To track this, fetch and then check out main.

1.2.0 - 2022-11-14

Added

Added unset_logger, set_slog_logger (behind slog feature) and set_log_logger (behind log feature)
Expose set_resolve_timeout function.
Expose set_exponential_reconnect function.

Changed

set_logger is deprecated and behind slog feature which is enabled by default

Fixed

Inet::Default now returns an ipv4 address of 0.0.0.0 instead of the previous value which was semantically incorrect.

1.1.0 - 2022-03-31

Added

Added new early_access_min_tls_version feature, which enables a set_min_protocol_version method on an Ssl object.

1.0.0 - 2022-03-29

Added

Added new set_cloud_secure_connection_bundle and set_cloud_secure_connection_bundle_no_ssl_lib_init functions using the functions Datastax defined in cassandra-cpp-driver version 2.16.0.
Added new error codes LIB_NO_TRACING_ID and SSL_CLOSED using the codes Datastax defined in cassandra-cpp-driver version 2.16.0.

0.17.2 - 2022-03-09

Fixed

Fixed UB in Inet::to_string

0.17.1 - 2022-01-24

Changed

Move GitHub build to GitHub Actions (was previously Travis).

Fixed

Removed unused decimal dependency.

0.17.0 - 2021-05-17

Changed

Changed Session::execute_batch and Session::execute_batch_with_payloads to take only a reference to Batch rather than consuming it.

This is a breaking change; to update your code, simply change batch to &batch in your argument list. If this causes an error future cannot be sent between threads safely because &Batch is used across an await, you need to introduce a let before the await as follows:
```
let fut = session.execute_batch(&batch);
let result = fut.await?
```

0.16.0 - 2021-03-10

Added

Exposes separate setters for collection types on Tuple and UserType. As such, the respective set_collection and set_collection_by_name on both types have been removed. set_collection becomes set_set and set_collection_by_name becomes set_set_by_name.
Added Cluster::set_token_aware_routing_shuffle_replicas.
ConstDataType::new_user_type has been added, to allow the creation of a user data type from an existing data type.
Added Session::execute_with_payloads and Session::execute_batch_with_payloads to allow getting custom payloads from query and batch executions.

Breaking changes

Extended the lifetime of a CassResult into a Row. This is a breaking change, and may require reworking the code to satisfy the lifetime requirement that the CassResult must live longer than the Row.
CassCollection::new has been renamed to CassCollection::with_capacity, and CassCollection::new has been created, that no longer requires a capacity. This closely mirrors the API that the standard library collections expose, and that the item_count passed to new is merely a capacity hint for the purpose of optimization.
time::Duration has been replaced with std::time::Duration.

Changed

Change various functions to avoid the extra overhead using an intermediate CString object.
Switched to using parking_lot::Mutex instead of std::sync::Mutex for CassFuture coordination.
Implemented size_hint on ResultIterator.
Bumped versions of various dependencies.

Fixed

CassResult::set_paging_state_token was implemented incorrectly, namely, it did nothing, and has instead been replaced with CassResult::paging_state_token.
Statement::set_paging_state_token has been changed to take a &[u8] instead of a &str, as a paging state token isn't necessarily utf8 encoded.

0.15.1 - 2020-06-02

Added

Conversion functions between uuid::Uuid and this library's Uuid.

Changed

PreparedStatement is now considered Sync, and can be shared across threads.

Fixed

Remove unnecessary build.rs, making it easier to build the crate.

0.15.0 - 2020-01-28

Changed

Drop support for futures 0.1, and implement std::future instead, allowing you to use this this library inside async functions, allowing anything that returns a CassFuture to be awaited. This is a breaking change, and will require you to update your call-sites to either use std::future, or wrap them with a compatibility shim (e.g., futures::compat).

Added

Adds a new method, Cluster.connect_async that returns a future, allowing you to connect to the cluster without blocking the event loop.

[0.14.1] - 2019-11-07

Changed

Add code example for SSL.
Updated error-chain to 0.12.1 to avoid Error deprecation warnings.

Fixed

Provide missing doc comment, fix unused doc comment warnings.
Fix type signature on set_load_balance_dc_aware so it can be used.

0.14.0 - 2019-01-22

Added

Clone, Copy and PartialEq traits in Inet
Fields name and value support for UserTypeIterator (support for UDT)
Extra bindings for Row::get_by_name and Statement::bind_by_name

Changed

Debug implementation for Inet now uses its ToString implementation

Fixed

Value::get_inet which would always return a zeroed Inet
Dropping futures early could cause a segfault when using the system allocator (in Rust 1.32.0 or later).

0.13.2 - 2019-01-15

Avoid possible segfaults, by returning None where possible, otherwise panicking. In particular, a collection field set to NULL now returns None rather than faulting.
Make SchemaMeta::get_keyspace_by_name work (fix string handling bug).
Allow using the SetIterator for lists and tuples. Previously these could not be enumerated at all!
For convenience, support bind() for Lists.

0.13.1 - 2019-01-08

Fix stmt!() not working if Statement was not imported.

0.13.0 - 2018-12-04

Added new set_local_address function using the function Datastax added in cassandra-cpp-driver version 2.10.0

0.12.0 - 2018-12-04

Fixed

No longer leaks all CassResults.

Changed

Updated cassandra-cpp-sys to 0.12.
Updated cassandra-cpp-driver to 2.10.0
cql protocol version 2 is no longer supported.
Breaking changes: The Cassandra WriteType UKNOWN is now called UNKNOWN There is a new Cassandra error code LIB_EXECUTION_PROFILE_INVALID There is a new Cassandra value type: DURATION
ResultIterator now has a lifetime parameter. The underlying CassResult must live for at least as long as the iterator.
CassResult is no longer IntoIterator; instead &CassResult is. You must change code like for row in result to for row in &result and ensure result lives long enough.

0.11.0 - 2018-04-26

Remove the AsInet and FromInet traits, replacing them with suitable implementations of From.
Fixed buggy IPv6 conversions.
Inet::cass_inet_init_v4 and Inet::cass_inet_init_v6 no longer consume their arguments.
Tuple::set_inet() now takes an IpAddr rather than a SocketAddr.
Added wrapper for cass_statement_set_request_timeout.

0.10.2 - 2017-09-11

Move to latest (0.11) version of cassandra-cpp-sys crate.

There should be no external impact.

0.10.1 - 2017-08-30

Remove unnecessary dependency on ip crate.
Add Copy, Clone, Hash impls for all nullary enums.
Specify correct Send and Sync markers for all C* types.

0.10.0 - 2017-08-03

The API changed significantly in version 0.10. Here is a summary of the main changes. (Version 0.9 was skipped, for consistency with the cassandra-cpp-sys version number.)

Errors:

The internal module errors and the underlying cassandra-cpp-sys crate are no longer exposed in the API. All necessary types are defined in this crate's root module.
All errors are now reported consistently using a single newly-defined Error type.
- The crate makes every effort to return an error rather than panicking.
- CassError, CassErrorResult, and others are replaced by Error and CassErrorCode.
- Several return types have changed from T to Result<T, Error>.

Futures:

There is only a single future type, CassFuture, and it implements the Rust/Tokio futures API. It interoperates smoothly with existing futures code.
- Future, CloseFuture, ResultFuture, PreparedFuture, SessionFuture are all subsumed.
- wait is replaced with Future::wait; other methods have standard analogues as well. See the futures documentation for details.
- Callbacks can no longer be set explicitly on a future; instead the normal futures mechanisms (e.g., and_then) should be used.

Values:

The Column type is retired; instead use Value.
Some Value getters have new names for consistency, e.g., get_flt and get_dbl are now get_f32 and get_f64 respectively.
Value::get_string now gets a String, not a &str; you can get a &str with get_str.
The "magic" auto-converting Row getters get_col and get_col_by_name are renamed to get and get_by_name respectively. This is to avoid confusion with get_column, which is something else entirely (it gets a Value from a Row).
Values have a new is_null method to allow retrieving null values.
UUIDs now support Eq and Ord.

Miscellaneous types:

Several types which wrapped cassandra-cpp-sys types now have enums of their own, complete with implementations of Debug, Eq, PartialEq, Display, and FromStr. This includes BatchType, CassErrorCode, Consistency, LogLevel, SslVerifyFlag, and ValueType.
CqlProtocol is now simply an alias for an integer.
Contact points are now expressed as a simple string in the driver's preferred format. ContactPoints is retired.

Other:

Logging uses the slog crate. It is no longer possible to set your own logging callback, but you can set the slog logger.
Internally, the code is cleaner and smaller and some tests have been added.

0.8.2 - 2017-06-29

First release of https://github.com/Metaswitch/cassandra-rs

Fork package.
Move examples to examples directory, then make several into Rust tests.
Resolve all warnings.
Fix various panics.
Add Eq and Ord for Uuid.
Add is_null support.

0.8.1 - 2016-12-13

Last release of https://github.com/tupshin/cassandra-rs