mongo-c-driver 1.2.0-beta

It is my pleasure to announce to you the first beta release of the MongoDB C driver 1.2.0.

This release is a stable release with additive ABI changes and bugfixes. It is compatible with MongoDB version 2.4 and later.

Version 1.2.0 rewrites mongoc_client_t's internals to match two important new specs for MongoDB drivers: the Server Discovery And Monitoring Spec and the Server Selection Spec. The rewritten client has many advantages:

• All replica set members or mongoses are discovered and periodically
  checked in parallel. The driver's performance is dramatically better and
  more predictable with multi-server deployments, or with a flaky network,
  or when some servers are slow or down.
• Clients from the same mongoc_client_pool_t share a background thread that
  discovers and monitors all servers in parallel.
• Unnecessary round trips for server checks and pings are eliminated.
• Behavior is documented in the specs, and consistent with other drivers, even
  in complex or unusual scenarios.
• The URI's "replicaSet" option is enforced: the driver now refuses to connect
  to a server unless it is a member of a replica set with the right setName.
• Many race conditions related to changing deployment conditions are fixed.

To conform to the new specs, the client now accepts these options in the MongoDB URI; see the mongoc_uri_t documentation for details:

• heartbeatFrequencyMS
• serverSelectionTimeoutMS
• serverSelectionTryOnce
• socketCheckIntervalMS

Other features:

• All timeouts that can be configured in the URI now interpret 0 to mean "use the default value for this timeout".
• The client's read preference can be configured in the URI with the new
  options "readPreference" and "readPreferenceTags", see the mongoc_uri_t
  documentation.
• The new mongoc_uri_get_read_prefs_t function retrieves both the read mode
  and tags from a mongoc_uri_t.
• New accessors mongoc_gridfs_file_get_id, mongoc_client_get_default_database,
  and mongoc_bulk_operation_get_write_concern.
• Debug tracing can be controlled at runtime with mongoc_log_trace_enable and
  mongoc_log_trace_disable.

Notable bugs fixed:

• "wtimeoutms" was ignored for write concerns besides "majority".
• Bulk write operations might fail in mixed-version sharded clusters with
  some pre-2.6 mongos servers.
• Normal operations were logged during startup and could not be silenced.
• A variety of bugs and incorrect results in mongoc_bulk_operation_execute.
• Numerous compiler warnings and build failures on various platforms.
• Copious refinements to the documentation.

Thanks to everyone who contributed to this version of libmongoc.

• A. Jesse Jiryu Davis
• Sujan Dutta
• Jason Carey
• Hannes Magnusson
• Jeremy Mikola
• Derick Rethans
• Samantha Ritter
• Yuchen Xie
• Lloyd Zhou

Peace,

A. Jesse Jiryu Davis

mongo-c-driver 1.1.10

It is my pleasure to announce to you the MongoDB C driver 1.1.10.

This is a patch release with bug fixes:

• Occasional crash reconnecting to replica set.
• Queries sent to recovering replica set members.
• Memory leak when calling ismaster on replica set members.

Thanks to everyone who contributed to the development of this point release for
libmongoc.

• A. Jesse Jiryu Davis
• Daniil Zaitsev
• Jason Carey
• Jeremy Mikola

Peace,

A. Jesse Jiryu Davis

mongo-c-driver 1.1.9

It is my pleasure to announce to you the MongoDB C driver 1.1.9.

This release fixes a common crash in 1.1.8, which itself was introduced while
fixing a rare crash in 1.1.7. For further details:

https://jira.mongodb.org/browse/CDRIVER-721
https://jira.mongodb.org/browse/CDRIVER-695

Thanks to everyone who contributed to the development of this point release for
libmongoc.

Peace,

A. Jesse Jiryu Davis

mongo-c-driver 1.1.8

Update: this release suffers from a severe regression, CDRIVER-721, so I'm removing it.

It is my pleasure to announce to you the 1.1.8 release of the MongoDB C driver.

This is a patch release with bug fixes:

• Crash freeing client after a replica set auth error.
• Compile error in strict C89 mode.

Thanks to everyone who contributed to the development of this point release for
libmongoc.

Peace,

A. Jesse Jiryu Davis

Mongo-c-driver 1.1.7

mongo-c-driver 1.1.7

It is my pleasure to announce to you the 1.1.7 release of the MongoDB C driver.

This is a patch release with bug fixes:

• Thread-safe use of Cyrus SASL library.
• Experimental support for building with CMake and SASL.
• Faster reconnection to replica set with some hosts down.
• Crash iterating a cursor after reconnecting to a replica set.
• Unchecked errors decoding invalid UTF-8 in MongoDB URIs.
• Fix error reporting from mongoc_client_get_database_names.

Thanks to everyone who contributed to the development of this point release for
libmongoc.

• A. Jesse Jiryu Davis
• Jason Carey
• Hannes Magnusson

Peace,

A. Jesse Jiryu Davis

Mongo-c-driver 1.1.6

mongo-c-driver 1.1.6

It is my pleasure to announce to you the 1.1.6 release of the MongoDB C driver.

This is a patch release with performance enhancements and bug fixes:

• mongoc_bulk_operation_execute now coalesces consecutive update operations
  into a single message to a MongoDB 2.6+ server, yielding huge performance
  gains. Same for remove operations. (Inserts were always coalesced.)
• Large numbers of insert operations are now properly batched according to
  number of documents and total data size.
• GSSAPI / Kerberos auth now works.
• The driver no longer tries three times in vain to reconnect to a primary,
  so socketTimeoutMS and connectTimeoutMS now behave closer to what you
  expect for replica sets with down members. A full fix awaits 1.2.0.

I snuck in a feature:

• mongoc_matcher_t now supports basic subdocument and array matching

Thanks to everyone who contributed to the development of this point release for
libmongoc.

• A. Jesse Jiryu Davis
• Jason Carey
• Kai Mast
• Matt Cotter

Peace,

A. Jesse Jiryu Davis

Mongo-c-driver 1.1.5

mongo-c-driver 1.1.5

It is my pleasure to announce to you the 1.1.5 release of the MongoDB C driver.

This is a patch release with performance enhancements and bug fixes:

• The fsync and j write concern flags now imply acknowledged writes
• Prevent using fsync or j with conflicting w=0 write concern
• Obey socket timeout consistently in TLS/SSL mode
• Return an error promptly after a network hangup in TLS mode
• Prevent crash using SSL in FIPS mode
• Always return NULL from mongoc_database_get_collection_names on error
• Fix version check for GCC 5 and future versions of Clang
• Fix warnings and errors building on various platforms
• Add configure flag to enable/disable shared memory performance counters
• Minor docs improvements and fix links from C Driver docs to Libbson docs

With this release, Libbson abandons the convention that odd-numbered patch
versions indicate unstable releases. We switch to simple semantic versioning:
1.1.5 is a stable release with bug fixes since 1.1.4. During subsequent
development the version will be "1.1.6-dev".

Thanks to everyone who contributed to the development of this point release for
libmongoc.

• A. Jesse Jiryu Davis
• Christian Hergert
• Jason Carey
• Jeremy Mikola
• Jeroen Ooms
• Hannes Magnusson

Enjoy!

-- A. Jesse Jiryu Davis

Mongo-c-driver 1.1.4

mongo-c-driver 1.1.4

It is my pleasure to announce to you the 1.1.4 release of the MongoDB C driver.

This release is a stable release with performance enhancements and bugfixes.

Changes include:

• Fixed client pool concurrency issues
• Fixed some scenarios where replica sets would fail to reconnect on primary
  step down.
• Improved write concern handling
• Validate port number in URI
• Various other fixes

Thanks to everyone who contributed to the development of this point release for
libmongoc.

• Jason Carey
• Andrew Clayton
• A. Jesse Jiryu Davis
• Jeremy Mikola

Enjoy!

-- Jason Carey

Mongo-c-driver 1.1.2

mongo-c-driver 1.1.2

It is my pleasure to announce to you the 1.1.2 release of the MongoDB C driver.

This release is a stable release with performance enhancements and bugfixes.

Changes include:

• Process connectTimeoutMS cast insensitively
• Addition of missing trace macros
• Improvement of internal error messages
• Fix a segfault in OpenSSL cleanup routines
• Fix for IPv6 support for replica sets
• Coalesce small vectorized TLS writes
• MinGW fixups
• Fix for a memory leak in get_database_names()
• Fixes for patching write concern through the bulk api
• Fix to normalize hostnames in uri parsing
• Fix for managing connections in the client pool
• Various other fixes

Thanks to everyone who contributed to the development of this point release for
libmongoc.

• Andrew Clayton
• Denis Gladkikh
• Hannes Magnusson
• Jason Carey
• Jeremy Mikola
• mschoenlaub
• Samantha Ritter
• Tyler Brock

Enjoy!

-- Jason Carey

Mongo-c-driver 1.1.0

mongo-c-driver 1.1.0

It is my pleasure to announce to you the 1.1.0 release of the MongoDB C driver.

This release is a stable release with additive ABI changes and bugfixes.

The below changes include some carried over from RC0.

Changes include:

• RC0
  • ABI versioning for 1.1 versus 1.0 symbols
  • additional geo index options
  • authMechanismProperties in URI
  • fixes for OS X Yosemite
  • removal of replica set member limit
  • SCRAM-SHA-1 SASL mechanism
  • updated dependency on libbson 1.1 abi
  • validation for bulk insert
  • various memory leak fixes
• Fixes to documentation typos
• "How to Ask For Help" in the README
• Removed dependency on sasl for PLAIN authentication
• Use provided username, if available, for X.509 auth
• Fixed WriteConcern error reporting for some writes
• Check for closed sockets before attempting RPCs
• Fixes for gridfs file seek
• Fixes for mongoc_cursor_clone()
• Fixes for unix domain socket support
• Fixes for polling on win32
• Improved warnings on failure to connect
• Addition of wired tiger options
• Fixes for examples

Additions to the ABI include:

• support for extra option in count
  • mongoc_collection_count_with_opts
• additional index options
  • mongoc_index_opt_geo_get_default
  • mongoc_index_opt_geo_init
  • mongoc_index_opt_wt_get_default
  • mongoc_index_opt_wt_init
• rand interface to seed and verify the strong random number generation needed
  by some auth mechanisms
  • mongoc_rand_seed
  • mongoc_rand_add
  • mongoc_rand_status
• URI additions to support more complicated auth credentials
  • mongoc_uri_get_credentials
  • mongoc_uri_get_mechanism_properties
• Support for cursor returning metadata crud operations
  • mongoc_client_find_databases
  • mongoc_collection_find_indexes
  • mongoc_database_find_collections
• Kill cursor supportp
  • mongoc_client_kill_cursor
• Various get/setters on cursor
  • mongoc_cursor_get_batch_size
  • mongoc_cursor_get_id
  • mongoc_cursor_set_batch_size
• More socket/stream options
  • mongoc_socket_check_closed
  • mongoc_socket_inet_ntop
  • mongoc_stream_check_closed
  • mongoc_stream_write

Additional Notes:
Existing complex index names may contain a zero instead of a type due to
a bug in mongoc_collection_keys_to_index_string. As a result those indexes may
be hard to drop from the driver as they have a name you would not expect.

Thanks to everyone who contributed to the development of this point release for
libmongoc.

• Adam Midvidy
• aherlihy
• alexeyvo
• Christian Hergert
• Hannes Magnusson
• Jason Carey
• Jérôme Lebel
• Jesse Jiryu Davis
• lloydzhou
• Mark Benevenuto
• Paul Melnikow
• Samantha Ritter
• Shraya Ramani
• Spencer Jackson
• Spencer Jackson
• Tyler Brock

Enjoy!

-- Jason Carey