Stabilising changes for version 3.0.0

.bumpversion.toml

@@ -0,0 +1,39 @@
+[tool.bumpversion]
+current_version = "3.0.0"
+commit = false
+tag = false
+
+[[tool.bumpversion.files]]
+filename = "pyproject.toml"
+search = "version = \"{current_version}\""
+replace = "version = \"{new_version}\""
+
+[[tool.bumpversion.files]]
+filename = "setup.py"
+search = "version='{current_version}'"
+replace = "version='{new_version}'"
+
+[[tool.bumpversion.files]]
+filename = "README.rst"
+search = "library is {current_version}"
+replace = "library is {new_version}"
+
+[[tool.bumpversion.files]]
+filename = "docs/conf.py"
+search = "version = release = '{current_version}'"
+replace = "version = release = '{new_version}'"
+
+[[tool.bumpversion.files]]
+filename = "src/questdb/__init__.py"
+search = "__version__ = '{current_version}'"
+replace = "__version__ = '{new_version}'"
+
+[[tool.bumpversion.files]]
+filename = "src/questdb/ingress.pyx"
+search = "VERSION = '{current_version}'"
+replace = "VERSION = '{new_version}'"
+
+[[tool.bumpversion.files]]
+filename = ".bumpversion.toml"
+search = "current_version = \"{current_version}\""
+replace = "current_version = \"{new_version}\""

CHANGELOG.rst

@@ -5,6 +5,70 @@ Changelog
 
 =========
 
+3.0.0 (2025-xx-xx)
+------------------
+
+Features
+~~~~~~~~
+
+This is the first major release of the QuestDB Python client library
+which supports n-dimensional arrays of doubles for QuestDB servers 8.4.0 and up.
+
+.. code-block:: python
+
+        import numpy as np
+
+        # Create 2D numpy array
+        array_2d = np.array([
+            [1.1, 2.2, 3.3],
+            [4.4, 5.5, 6.6]], dtype=np.float64)
+
+        sender.row(
+            'table',
+            columns={'array_2d': array_2d},
+            at=timestamp)
+
+The array data is sent over a new protocol version (2) that is auto-negotiated
+when using HTTP(s), or can be specified explicitly via the ``protocol_version=2``
+parameter when using TCP(s).
+
+We recommend using HTTP(s), but here is an TCP example, should you need it::
+
+  tcp::addr=localhost:9009;protocol_version=2;
+
+When using ``protocol_version=2`` (with either TCP(s) or HTTP(s)), the sender
+will now also serialize ``float`` (double-precision) columns as binary.
+You might see a performance uplift if this is a dominant data type in your
+ingestion workload.
+
+When compared to 2.0.4, this release includes all the changes from 3.0.0rc1 and
+additionally:
+
+* Has optimised ingestion performance from C-style contiguous NumPy arrays.
+
+* Warns at most every 10 minutes when burst of reconnections are detected.
+  This is to warn about code patterns that may lead to performance issues, such as
+
+  .. code-block:: python
+
+    # Don't do this! Sender objects should be reused.
+    for row_fields in data:
+        with Sender.from_conf(conf) as sender:
+            sender.row(**row_fields)
+
+  This feature can be disabled in code by setting:
+
+  .. code-block:: python
+
+    import questdb.ingress as qi
+    qi.WARN_HIGH_RECONNECTS = False
+
+Breaking Changes
+~~~~~~~~~~~~~~~~
+Refer to the release notes for 3.0.0rc1 for the breaking changes introduced
+in this release compared to 2.x.x.
+
+
 3.0.0rc1 (2025-06-02)
 ---------------------
 
@@ -16,6 +80,10 @@ Features
 * Array Data Type Support. Adds native support for NumPy arrays
   (currently only for ``np.float64`` element type and up to 32 dimensions).
 
+.. note::
+    **Server Requirement**: This feature requires QuestDB server version 8.4.0 or higher.
+    Ensure your server is upgraded before ingesting array types, otherwise data ingestion will fail.
+
 .. code-block:: python
 
         import numpy as np

DEV_NOTES.rst

@@ -55,7 +55,6 @@ The development requirements are these if you prefer to install them one by one:
     python3 -m pip install wheel
     python3 -m pip install twine
     python3 -m pip install cibuildwheel
-    python3 -m pip install bump2version
 
 
 Building and packaging

MANIFEST.in

@@ -15,7 +15,7 @@ recursive-include src *.py
 recursive-include src *.md
 recursive-include src *.pxi
 recursive-include src *.c
-graft pystr-to-utf8
+graft rpyutils
 graft c-questdb-client
 prune c-questdb-client/src/tests/json_tests.rs
 prune c-questdb-client/.git

README.rst

@@ -5,7 +5,7 @@ QuestDB Client Library for Python
 This is the official Python client library for `QuestDB <https://questdb.io>`_.
 
 This client library implements QuestDB's variant of the
-`Ingestion Line Protocol <https://questdb.io/docs/reference/api/ilp/overview/>`_
+`InfluxDB Line Protocol <https://questdb.io/docs/reference/api/ilp/overview/>`_
 (ILP) over HTTP and TCP.
 
 ILP provides the fastest way to insert data into QuestDB.
@@ -53,6 +53,7 @@ The most common way to insert data is from a Pandas dataframe.
         'amount': [0.00044, 0.001],
 
         # NumPy float64 arrays are supported from v3.0.0rc1 onwards.
+        # Note that requires QuestDB server >= 8.4.0 for array support
         'ord_book_bids': [
             np.array([2615.54, 2618.63]),
             np.array([39269.98, 39270.00])
@@ -82,6 +83,7 @@ You can also send individual rows. This only requires a more minimal installatio
                 'amount': 0.00044,
 
                 # NumPy float64 arrays are supported from v3.0.0rc1 onwards.
+                # Note that requires QuestDB server >= 8.4.0 for array support
                 'ord_book_bids': np.array([2615.54, 2618.63]),
             },
             at=TimestampNanos.now())

RELEASING.rst

@@ -20,21 +20,17 @@ Create a new PR with the new changes in ``CHANGELOG.rst``.
 
 Make a commit and push the changes to a new branch.
 
-You also want to bump the version.
+You also want to bump the version. This process is semi-automated.
 
-This process is automated by the following command:
+* Ensure you have `uv` and `bump-my-version` installed:
+  * `curl -LsSf https://astral.sh/uv/install.sh | sh` : see https://docs.astral.sh/uv/getting-started/installation/
+  * `uv tool install bump-my-version`: see https://github.com/callowayproject/bump-my-version.
 
-.. code-block:: bash
-
-    bump2version --config-file .bumpversion.cfg --no-tag patch
-
-Here use:
-
-* ``patch`` to bump the version to the next patch version, e.g. 1.0.0 -> 1.0.1
-
-* ``minor`` to bump the version to the next minor version, e.g. 1.0.0 -> 1.1.0
+```console
+bump-my-version replace --new-version NEW_VERSION
+```
 
-* ``major`` to bump the version to the next major version, e.g. 1.0.0 -> 2.0.0
+If you're unsure, append `--dry-run` to preview changes.
 
 Now merge the PR with the title "Bump version: V.V.V → W.W.W".
 

ci/cibuildwheel.yaml

@@ -122,6 +122,7 @@ stages:
             displayName: Build wheels
             env:
               CIBW_BUILD: pp*
+              CIBW_ENABLE: pypy pypy-eol
           - task: PublishBuildArtifacts@1
             inputs: {pathtoPublish: 'wheelhouse'}
 

ci/pip_install_deps.py

@@ -92,9 +92,7 @@ def main(args):
         import pandas
         import numpy
         import pyarrow
-        if (sys.version_info >= (3, 8) and sys.version_info < (3, 13)):
-            # As of this commit, fastparquet does not have a binary built for 3.13
-            import fastparquet
+        import fastparquet
 
 
 if __name__ == "__main__":

ci/run_tests_pipeline.yaml

@@ -35,6 +35,8 @@ stages:
             lfs: false
             submodules: true
           - task: UsePythonVersion@0
+            inputs:
+              versionSpec: '3.12'
           - script: |
               python3 --version
               python3 -m pip install cython
@@ -68,3 +70,51 @@ stages:
               JAVA_HOME: $(JAVA_HOME_11_X64)
               QDB_REPO_PATH: './questdb'
             condition: eq(variables.vsQuestDbMaster, true)
+      - job: TestsAgainstVariousNumpyVersion1x
+        pool:
+          name: "Azure Pipelines"
+          vmImage: "ubuntu-latest"
+        timeoutInMinutes: 45
+        steps:
+          - checkout: self
+            fetchDepth: 1
+            lfs: false
+            submodules: true
+          - task: UsePythonVersion@0
+            inputs:
+              versionSpec: '3.9'
+          - script: |
+              python3 --version
+              python3 -m pip install uv
+              sudo apt-get install -y libopenblas-dev pkg-config
+            displayName: "Install uv"
+          - script: uv run --with 'numpy==1.21.0' test/test.py -v TestBufferProtocolVersionV2
+            displayName: "Test vs numpy 1.21"
+          - script: uv run --with 'numpy==1.24.0' test/test.py -v TestBufferProtocolVersionV2
+            displayName: "Test vs numpy 1.24"
+          - script: uv run --with 'numpy==1.26.0' test/test.py -v TestBufferProtocolVersionV2
+            displayName: "Test vs numpy 1.26"
+      - job: TestsAgainstVariousNumpyVersion2x
+        pool:
+          name: "Azure Pipelines"
+          vmImage: "ubuntu-latest"
+        timeoutInMinutes: 45
+        steps:
+          - checkout: self
+            fetchDepth: 1
+            lfs: false
+            submodules: true
+          - task: UsePythonVersion@0
+            inputs:
+              versionSpec: '3.11'
+          - script: |
+              python3 --version
+              python3 -m pip install uv
+              sudo apt-get install -y libopenblas-dev pkg-config
+            displayName: "Install uv"
+          - script: uv run --with 'numpy==2.0.0' test/test.py -v TestBufferProtocolVersionV2
+            displayName: "Test vs numpy 2.0"
+          - script: uv run --with 'numpy==2.2.0' test/test.py -v TestBufferProtocolVersionV2
+            displayName: "Test vs numpy 2.2"
+          - script: uv run --with 'numpy==2.3.0' test/test.py -v TestBufferProtocolVersionV2
+            displayName: "Test vs numpy 2.3"

dev_requirements.txt

@@ -7,6 +7,6 @@ sphinx-rtd-theme>=1.0.0
 twine>=4.0.1
 bump2version>=1.0.1
 pandas>=1.3.5
-numpy>=1.21.6
+numpy>=1.21.0
 pyarrow>=10.0.1
 fastparquet>=2023.10.1

docs/conf.py

@@ -5,6 +5,11 @@
 
 from questdb.ingress import *
 
+autodoc_mock_imports = ["_cython"]
+autodoc_type_aliases = {
+    'datetime': 'datetime.datetime',
+}
+
 extensions = [
     'sphinx.ext.autodoc',
     'sphinx.ext.autosummary',
@@ -23,7 +28,7 @@
 year = '2024'
 author = 'QuestDB'
 copyright = '{0}, {1}'.format(year, author)
-version = release = '3.0.0rc1'
+version = release = '3.0.0'
 
 github_repo_url = 'https://github.com/questdb/py-questdb-client'
 

docs/conf.rst

@@ -240,6 +240,9 @@ Specifies the version of InfluxDB Line Protocol to use. Valid options are:
 
   TCP/TCPS: Defaults to version 1 for compatibility
 
+.. note::
+    Protocol version ``2`` requires QuestDB server version 8.4.0 or higher.
+
 .. _sender_conf_buffer:
 
 Buffer