MySQL Connector/Node.js 8.0.25 has been released

Dear MySQL users,

MySQL Connector/Node.js is a new Node.js driver for use with the X
DevAPI. This release, v8.0.25, is a maintenance release of the
MySQL Connector/Node.js 8.0 series.

The X DevAPI enables application developers to write code that combines
the strengths of the relational and document models using a modern,
NoSQL-like syntax that does not assume previous experience writing
traditional SQL.

MySQL Connector/Node.js can be downloaded through npm (see
https://www.npmjs.com/package/@mysql/xdevapi for details) or from
https://dev.mysql.com/downloads/connector/nodejs/.

To learn more about how to write applications using the X DevAPI, see
http://dev.mysql.com/doc/x-devapi-userguide/en/.
For more information about how the X DevAPI is implemented in MySQL
Connector/Node.js, and its usage, see
http://dev.mysql.com/doc/dev/connector-nodejs/.

Please note that the X DevAPI requires at least MySQL Server version
8.0 or higher with the X Plugin enabled. For general documentation
about how to get started using MySQL as a document store, see
http://dev.mysql.com/doc/refman/8.0/en/document-store.html.

Changes in MySQL Connector/Node.js 8.0.25 (2021-05-11, General Availability)

   This release contains no functional changes and is published
   to align the version number with the MySQL Server 8.0.25
   release.

On Behalf of Oracle/MySQL Engineering Team,
Gipson Pulla

Deprecating End-of-life runtime engines on Connector/Node.js

Starting with the 8.0.23 release, Connector/Node.js will be deprecating support for End-of-life Node.js engine versions. Support for these versions will eventually be removed on subsequent releases which will focus on compatibility with the available LTS versions at the date of each release.

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MySQL Connector/Node.js 8.0.23 has been released


Dear MySQL users,

MySQL Connector/Node.js is a new Node.js driver for use with the X
DevAPI. This release, v8.0.23, is a maintenance release of the
MySQL Connector/Node.js 8.0 series.

The X DevAPI enables application developers to write code that combines
the strengths of the relational and document models using a modern,
NoSQL-like syntax that does not assume previous experience writing
traditional SQL.

MySQL Connector/Node.js can be downloaded through npm (see
  https://www.npmjs.com/package/@mysql/xdevapi for details) or from
  https://dev.mysql.com/downloads/connector/nodejs/.

To learn more about how to write applications using the X DevAPI, see
  http://dev.mysql.com/doc/x-devapi-userguide/en/.
For more information about how the X DevAPI is implemented in MySQL
Connector/Node.js, and its usage, see
  http://dev.mysql.com/doc/dev/connector-nodejs/.

Please note that the X DevAPI requires at least MySQL Server version
8.0 or higher with the X Plugin enabled. For general documentation
about how to get started using MySQL as a document store, see
  http://dev.mysql.com/doc/refman/8.0/en/document-store.html.

Changes in MySQL Connector/Node.js 8.0.23 (2021-01-18, General Availability)

* Functionality Added or Changed
* Bugs Fixed

Functionality Added or Changed

* Added custom debug functionality using the NODE_DEBUG
environment variable to log and inspect low-level details
for the application. Connector/Node.js now supports this
feature and uses it, in particular, for logging
information about the protocol messages (inbound and
outbound) that are exchanged with the MySQL server.
Messages sent by the client are available under the
protocol:outbound scope, whereas messages sent by the
server are available under the protocol:inbound scope.
For example, the following writes a textual protobuf
representation of every Mysqlx.Crud.Find and
Mysqlx.Resultset.Row message to stderr: shell> NODE_DEBUG=’protocol:outbound:Mysqlx.Crud.Find,protocol:inbound :Mysqlx.Resultset.Row’ node app.js

Node 10 and later supports wildcard pattern matching,
such as NODE_DEBUG=’protocol:inbound:*’ to filter out
inbound messages and NODE_DEBUG=’*’ to show all logs.
(Bug #31729043)

* Added a deprecation warning to the Connector/Node.js
installation process that future Connector/Node.js
versions do not guarantee compatibility with End-of-life
Node.js versions. If you are planning to upgrade, make
sure you are using Node.js 12.0.0 or higher.

Bugs Fixed

* Stored values in a DOUBLE column were truncated when
encoded and sent to the MySQL server. For example, a
value such as 1.000001 would become 1. They are now
encoded properly as double-precision floating numbers to
support the full range of 64-bit floating point precision
in MySQL columns with the DOUBLE data type (having in
mind possible rounding an approximations performed by the
database engine). (Bug #31734504)

* Improved consistency for method argument error handling
when an argument is not set or uses JavaScript’s
“undefined”. (Bug #31709879)

* Refactored code to disable all debugging utilities when
debug mode is off. (Bug #31584269)

On Behalf of MySQL Release Engineering Team,
Surabhi Bhat

MySQL Connector/Node.js 8.0.22 has been released

Dear MySQL users,

MySQL Connector/Node.js is a new Node.js driver for use with the X
DevAPI. This release, v8.0.22, is a maintenance release of the
MySQL Connector/Node.js 8.0 series.

The X DevAPI enables application developers to write code that combines
the strengths of the relational and document models using a modern,
NoSQL-like syntax that does not assume previous experience writing
traditional SQL.

MySQL Connector/Node.js can be downloaded through npm (see
  https://www.npmjs.com/package/@mysql/xdevapi for details) or from
  https://dev.mysql.com/downloads/connector/nodejs/.

To learn more about how to write applications using the X DevAPI, see
  http://dev.mysql.com/doc/x-devapi-userguide/en/.
For more information about how the X DevAPI is implemented in MySQL
Connector/Node.js, and its usage, see
  http://dev.mysql.com/doc/dev/connector-nodejs/.

Please note that the X DevAPI requires at least MySQL Server version
8.0 or higher with the X Plugin enabled. For general documentation
about how to get started using MySQL as a document store, see
  http://dev.mysql.com/doc/refman/8.0/en/document-store.html.


Changes in MySQL Connector/Node.js 8.0.22 (2020-10-19, General Availability)

Functionality Added or Changed

     * Improved test execution configuration to better align
       with other connectors. For example, unified environment
       variable names (such as changing NODE_TEST_MYSQL_HOST to
       MYSQLX_HOST). See the Connector/Node.js documentation
       (https://dev.mysql.com/doc/dev/connector-nodejs/8.0/) for
       usage information.


Bugs Fixed

     * Non-BIGINT values stored in BIGINT columns were not
       decoded properly in result sets. (Bug #31686805, Bug
       #100324)

     * Fetched results from a SET column would only contain one
       value from the set. (Bug #31654667, Bug #100255)

     * Deprecated the dbPassword and dbUser property names;
       which were aliases to the password and user properties.
       Their usage now emits deprecation level errors. (Bug
       #31599660)

     * Added a SERVER_GONE error handler to avoid potential
       circular dependency warnings with Node.js >= 14.0.0. (Bug
       #31586107, Bug #99869)

     * Restricted the offset() method to the CollectionFind and
       TableSelect APIs, as described in the X DevAPI
       specification. Using offset() on other APIs yielded this
       error: “Error: The server has gone away”. Instead, this
       intended behavior is available by using a combination of
       “sort()” or “orderBy()” and “limit()”. (Bug #31418813)

     * The nextResult() method returned false against an empty
       result set, and now returns true. Alternatively, use
       hasData() to check if a result set has data. (Bug
       #31037211)

     * The column.getType() method now returns the stringified
       type identifier when before it returned its numeric
       value. For example, DATETIME is now returned instead of
       12. (Bug #30922711)

     * Improved memory management for work performed by 3rd
       party APIs. (Bug #30845472)

     * Added support for lazy decoding of binary column metadata
       content. (Bug #30845366)

On Behalf of Oracle/MySQL Release Engineering Team,

Hery Ramilison

MySQL Connector/Node.js 8.0.20 has been released

Dear MySQL users,

MySQL Connector/Node.js is a new Node.js driver for use with the X
DevAPI. This release, version 8.0.20, is a maintenance release of the
MySQL Connector/Node.js 8.0 series.

The X DevAPI enables application developers to write code that combines
the strengths of the relational and document models using a modern,
NoSQL-like syntax that does not assume previous experience writing
traditional SQL.

MySQL Connector/Node.js can be downloaded through npm (see
https://www.npmjs.com/package/@mysql/xdevapi for details) or from
https://dev.mysql.com/downloads/connector/nodejs/.

To learn more about how to write applications using the X DevAPI, see
http://dev.mysql.com/doc/x-devapi-userguide/en/.
For more information about how the X DevAPI is implemented in MySQL
Connector/Node.js, and its usage, see
http://dev.mysql.com/doc/dev/connector-nodejs/.

Please note that the X DevAPI requires at least MySQL Server version
8.0 or higher with the X Plugin enabled. For general documentation
about how to get started using MySQL as a document store, see
http://dev.mysql.com/doc/refman/8.0/en/document-store.html.

Changes in MySQL Connector/Node.js 8.0.20 (2020-04-27, General Availability)

Functionality Added or Changed

     * Added two new connection options that evaluate during the
       TLS handshake to restrict the negotiated TLS protocols
       and ciphers; along with those configured on the server
       that can further restrict the final choices. These new
       options are tls-versions to define the allowed TLS
       protocol versions, and tls-ciphersuites for the allowed
       cipher suites. These definitions are comma-separated, and
       accepted by the getSession() and getClient() methods.
       tls-versions: accepts one or more of the following:
       TLSv1, TLSv1.1, TLSv1.2, and TLSv1.3. Other values
       generate an error.
       tls-ciphersuites: accepts IANA cipher suite names, as
       listed on IANA’s TLS Cipher Suites
(https://www.iana.org/assignments/tls-parameters/tls-parameters.xhtml#tls-parameters-4)
       page. Unsupported or unknown values are ignored.
       Example usage demonstrating both plain JavaScript and
       JSON configuration object formats:
# tls versions:
mysqlx.getSession(‘mysqlx://root@localhost?tls-versions=[TLSv1,TLSv1.1
,TLSv1.2,TLSv1.3]’)

mysqlx.getSession({ user: ‘root’, tls: { versions: [‘TLSv1’, ‘TLSv1.1’
, ‘TLSv1.2’, ‘TLSv1.3’] } })

# tls ciphersuites
mysqlx.getSession(‘mysqlx://root@localhost?tls-ciphersuites=[DHE-RSA-A
ES128-GCM-SHA256,DHE-RSA-AES256-SHA256]’)

mysqlx.getSession({ user: ‘root’, tls: { ciphersuites: [‘DHE-RSA-AES12
8-GCM-SHA256′, ‘DHE-RSA-AES256-SHA256’] } })

     * For X DevAPI applications, when creating a new
       connection, if the connection data contains several
       target hosts that have no explicit priority assigned, the
       behavior of the failover logic now is the same as if all
       those target hosts have the same priority. That is, the
       next candidate for making a connection is chosen randomly
       from the remaining available hosts. If two hosts have the
       same priority then one is chosen at random.

On Behalf of MySQL/ORACLE RE Team
Gipson Pulla

Rethinking Result Sets in Connector/Node.js

It used to be the case where, in order to actually process data retrieved from the database using Connector/Node.js, you would have to resort to an API that required the use of both JavaScript callbacks and Promises. This was meant to provide more flexibility and control to the application developer and at the same time decrease the chance of buffering data unnecessarily. However this wasn’t useful for 99% of the use-cases and made simple tasks a little bit cumbersome. Also, the fact that it required using two different asynchronous constructs made it a little bit harder to grasp.

To make matters worse, in order to consume operational metadata about the columns in the result set, you would have to provide an additional callback, making the whole thing spiral a bit out of control, particularly when there were multiple result sets involved. In that case, you needed to create a shared context between the two functions in order to map data and metadata for each column in each result set.

Continue reading

MySQL Connector/Node.js 8.0.19 has been released

Dear MySQL users,

MySQL Connector/Node.js is a new Node.js driver for use with the X
DevAPI. This release, v8.0.19, is a maintenance release of the
MySQL Connector/Node.js 8.0 series.

The X DevAPI enables application developers to write code that combines
the strengths of the relational and document models using a modern,
NoSQL-like syntax that does not assume previous experience writing
traditional SQL.

MySQL Connector/Node.js can be downloaded through npm (see
https://www.npmjs.com/package/@mysql/xdevapi for details) or from
https://dev.mysql.com/downloads/connector/nodejs/.

To learn more about how to write applications using the X DevAPI, see
http://dev.mysql.com/doc/x-devapi-userguide/en/.
For more information about how the X DevAPI is implemented in MySQL
Connector/Node.js, and its usage, see
http://dev.mysql.com/doc/dev/connector-nodejs/.

Please note that the X DevAPI requires at least MySQL Server version
8.0 or higher with the X Plugin enabled. For general documentation
about how to get started using MySQL as a document store, see
http://dev.mysql.com/doc/refman/8.0/en/document-store.html.

Changes in MySQL Connector/Node.js 8.0.19 (2020-01-13, General Availability)

Functionality Added or Changed

  • Added DNS SRV support.
    Using the mysqlx+srv scheme+extension in a connection
    string (or enabling the resolveSrv option in a connection
    configuration object) allows to automatically resolve any
    SRV record available in a target DNS server or service
    discovery endpoint.

Bugs Fixed

  • Improved the CRUD API error messages. (Bug #30423556)
  • The getAffectedItemsCount() method did not function on
    result sets in v8.0.18. (Bug #30401962)
  • The Collection.existsInDatabase() method did not
    function. (Bug #30401432)

On Behalf of MySQL/ORACLE RE Team
Gipson Pulla

MySQL Connector/Node.js 8.0.18 has been released

Dear MySQL users,

MySQL Connector/Node.js is a new Node.js driver for use with the X
DevAPI. This release, v8.0.18, is a maintenance release of the
MySQL Connector/Node.js 8.0 series.

The X DevAPI enables application developers to write code that combines
the strengths of the relational and document models using a modern,
NoSQL-like syntax that does not assume previous experience writing
traditional SQL.

MySQL Connector/Node.js can be downloaded through npm (see
https://www.npmjs.com/package/@mysql/xdevapi for details) or from
https://dev.mysql.com/downloads/connector/nodejs/.

To learn more about how to write applications using the X DevAPI, see
http://dev.mysql.com/doc/x-devapi-userguide/en/.
For more information about how the X DevAPI is implemented in MySQL
Connector/Node.js, and its usage, see
http://dev.mysql.com/doc/dev/connector-nodejs/.

Please note that the X DevAPI requires at least MySQL Server version
8.0 or higher with the X Plugin enabled. For general documentation
about how to get started using MySQL as a document store, see
http://dev.mysql.com/doc/refman/8.0/en/document-store.html.

Changes in MySQL Connector/Node.js 8.0.18 (2019-10-14, General
Availability)

Functionality Added or Changed

  • Implemented the X DevAPI cursor model, which includes
    adding methods such as fetchOne(), fetchAll(),
    getColumns(), hasData(), and nextResult(). For additional
    details, see the X DevAPI documentation about Working
    with Result Sets

(https://dev.mysql.com/doc/x-devapi-userguide/en/working-with-result-sets.html).
Previously, handling result set data or metadata required
specific callback functions when calling execute(). With
this new interface, the connector automatically switches
to this new pull-based cursor model if these callback
functions are not provided.

  • Improved Collection.getOne() performance by making the
    underlying lookup expression to only parse once, and
    having subsequent Collection.getOne() calls utilize
    server-side prepared statements.
  • Added support to generate test coverage reports by
    running the likes of npm run coverage; see the bundled
    CONTRIBUTING.md for details and requirements. This was
    added to help users contribute patches.
  • Added linter check support to help enforce coding style
    and convention rules for new contributions by running the
    likes of npm run linter; see the bundled CONTRIBUTING.md
    for details.

Bugs Fixed

  • Added support for assigning Node.js Buffer values to
    expression or SQL query placeholders. (Bug #30163003, Bug 96480)
  • MySQL column binary values (such as BLOB, BINARY, and
    VARBINARY) can now convert to proper Node.js Buffer
    instances. (Bug #30162858, Bug #96478)
  • Inserting a raw Node.js Buffer value into MySQL BLOB
    field resulted in an error as the content_type was
    improperly set; it’s now handled as a raw byte string by
    the X Plugin. (Bug #30158425)
  • The padding characters used for fixed-lengthed columns
    now map to the collation code provided by the column
    metadata; previously it was based on the JavaScript
    native type of the values. (Bug #30030159)

On Behalf of MySQL/ORACLE RE Team
Gipson Pulla