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We also recommend that a + file or class name and description of purpose be included on the + same "printed page" as the copyright notice for easier + identification within third-party archives. + + Copyright [yyyy] [name of copyright owner] + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + +-------------------------------------------------------------------------------- diff --git a/MANIFEST.in b/MANIFEST.in new file mode 100644 index 0000000000..a31dc633ad --- /dev/null +++ b/MANIFEST.in @@ -0,0 +1,18 @@ +# Licensed to the Apache Software Foundation (ASF) under one +# or more contributor license agreements. See the NOTICE file +# distributed with this work for additional information +# regarding copyright ownership. The ASF licenses this file +# to you under the Apache License, Version 2.0 (the +# "License"); you may not use this file except in compliance +# with the License. You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, +# software distributed under the License is distributed on an +# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY +# KIND, either express or implied. See the License for the +# specific language governing permissions and limitations +# under the License. + +graft src diff --git a/NOTICE b/NOTICE new file mode 100644 index 0000000000..906eca3c04 --- /dev/null +++ b/NOTICE @@ -0,0 +1,8 @@ + +Apache Iceberg +Copyright 2017-2021 The Apache Software Foundation + +This product includes software developed at +The Apache Software Foundation (http://www.apache.org/). + +-------------------------------------------------------------------------------- diff --git a/README.md b/README.md new file mode 100644 index 0000000000..35fe612026 --- /dev/null +++ b/README.md @@ -0,0 +1,43 @@ + + +# Iceberg Python + +py-iceberg is a python library for programmatic access to iceberg table metadata as well as to table data in iceberg format. +It is an implementation of [iceberg table spec](https://iceberg.apache.org/spec/) in Python. + +## Getting Started + +py-iceberg is currently in development, for development and testing purposes the best way to install the library is to perform the following steps: + +``` +git clone https://github.com/apache/iceberg.git +cd iceberg/python +pip install -e . +``` + +## Testing + +Testing is done using tox. The config can be found in `tox.ini` within the python directory of the iceberg project. + +``` +# simply run tox within the python dir +tox +``` + +## Get in Touch +- [Iceberg community](https://iceberg.apache.org/community/) diff --git a/pyproject.toml b/pyproject.toml new file mode 100644 index 0000000000..7389f493b7 --- /dev/null +++ b/pyproject.toml @@ -0,0 +1,23 @@ +# Licensed to the Apache Software Foundation (ASF) under one +# or more contributor license agreements. See the NOTICE file +# distributed with this work for additional information +# regarding copyright ownership. The ASF licenses this file +# to you under the Apache License, Version 2.0 (the +# "License"); you may not use this file except in compliance +# with the License. You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, +# software distributed under the License is distributed on an +# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY +# KIND, either express or implied. See the License for the +# specific language governing permissions and limitations +# under the License. + +[build-system] +requires = [ + "setuptools>=42", + "wheel" +] +build-backend = "setuptools.build_meta" \ No newline at end of file diff --git a/setup.cfg b/setup.cfg new file mode 100644 index 0000000000..5c58314131 --- /dev/null +++ b/setup.cfg @@ -0,0 +1,47 @@ +# Licensed to the Apache Software Foundation (ASF) under one +# or more contributor license agreements. See the NOTICE file +# distributed with this work for additional information +# regarding copyright ownership. The ASF licenses this file +# to you under the Apache License, Version 2.0 (the +# "License"); you may not use this file except in compliance +# with the License. You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, +# software distributed under the License is distributed on an +# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY +# KIND, either express or implied. See the License for the +# specific language governing permissions and limitations +# under the License. + +[metadata] +name = py-iceberg +version = 0.1.0a1 +author = Apache Software Foundation +author_email = dev@iceberg.apache.org +description = Apache Iceberg is an open table format for huge analytic datasets. +long_description = file: README.md +long_description_content_type = text/markdown +url = https://iceberg.apache.org/ +project_urls = + Source Code = https://github.com/apache/iceberg/ + Issue Tracker = https://github.com/apache/iceberg/issues +license="Apache License 2.0", +license_files = + LICENSE +classifiers = + License :: OSI Approved :: Apache Software License + Operating System :: OS Independent + Programming Language :: Python :: 3.7 + Programming Language :: Python :: 3.8 + Programming Language :: Python :: 3.9 + +[options] +package_dir = + = src +packages = find: +python_requires = >=3.7 + +[options.packages.find] +where = src diff --git a/setup.py b/setup.py new file mode 100644 index 0000000000..9acba2cc71 --- /dev/null +++ b/setup.py @@ -0,0 +1,29 @@ +# Licensed to the Apache Software Foundation (ASF) under one +# or more contributor license agreements. See the NOTICE file +# distributed with this work for additional information +# regarding copyright ownership. The ASF licenses this file +# to you under the Apache License, Version 2.0 (the +# "License"); you may not use this file except in compliance +# with the License. You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, +# software distributed under the License is distributed on an +# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY +# KIND, either express or implied. See the License for the +# specific language governing permissions and limitations +# under the License. + +from setuptools import setup + +setup( + name='py-iceberg', + install_requires=[], + extras_require={ + "dev": [ + "tox-travis==0.12", + "pytest", + ], + } +) diff --git a/src/iceberg/__init__.py b/src/iceberg/__init__.py new file mode 100644 index 0000000000..13a83393a9 --- /dev/null +++ b/src/iceberg/__init__.py @@ -0,0 +1,16 @@ +# Licensed to the Apache Software Foundation (ASF) under one +# or more contributor license agreements. See the NOTICE file +# distributed with this work for additional information +# regarding copyright ownership. The ASF licenses this file +# to you under the Apache License, Version 2.0 (the +# "License"); you may not use this file except in compliance +# with the License. You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, +# software distributed under the License is distributed on an +# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY +# KIND, either express or implied. See the License for the +# specific language governing permissions and limitations +# under the License. diff --git a/src/iceberg/catalog/__init__.py b/src/iceberg/catalog/__init__.py new file mode 100644 index 0000000000..13a83393a9 --- /dev/null +++ b/src/iceberg/catalog/__init__.py @@ -0,0 +1,16 @@ +# Licensed to the Apache Software Foundation (ASF) under one +# or more contributor license agreements. See the NOTICE file +# distributed with this work for additional information +# regarding copyright ownership. The ASF licenses this file +# to you under the Apache License, Version 2.0 (the +# "License"); you may not use this file except in compliance +# with the License. You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, +# software distributed under the License is distributed on an +# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY +# KIND, either express or implied. See the License for the +# specific language governing permissions and limitations +# under the License. diff --git a/src/iceberg/io/__init__.py b/src/iceberg/io/__init__.py new file mode 100644 index 0000000000..13a83393a9 --- /dev/null +++ b/src/iceberg/io/__init__.py @@ -0,0 +1,16 @@ +# Licensed to the Apache Software Foundation (ASF) under one +# or more contributor license agreements. See the NOTICE file +# distributed with this work for additional information +# regarding copyright ownership. The ASF licenses this file +# to you under the Apache License, Version 2.0 (the +# "License"); you may not use this file except in compliance +# with the License. You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, +# software distributed under the License is distributed on an +# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY +# KIND, either express or implied. See the License for the +# specific language governing permissions and limitations +# under the License. diff --git a/src/iceberg/table/__init__.py b/src/iceberg/table/__init__.py new file mode 100644 index 0000000000..13a83393a9 --- /dev/null +++ b/src/iceberg/table/__init__.py @@ -0,0 +1,16 @@ +# Licensed to the Apache Software Foundation (ASF) under one +# or more contributor license agreements. See the NOTICE file +# distributed with this work for additional information +# regarding copyright ownership. The ASF licenses this file +# to you under the Apache License, Version 2.0 (the +# "License"); you may not use this file except in compliance +# with the License. You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, +# software distributed under the License is distributed on an +# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY +# KIND, either express or implied. See the License for the +# specific language governing permissions and limitations +# under the License. diff --git a/src/iceberg/utils/__init__.py b/src/iceberg/utils/__init__.py new file mode 100644 index 0000000000..13a83393a9 --- /dev/null +++ b/src/iceberg/utils/__init__.py @@ -0,0 +1,16 @@ +# Licensed to the Apache Software Foundation (ASF) under one +# or more contributor license agreements. See the NOTICE file +# distributed with this work for additional information +# regarding copyright ownership. The ASF licenses this file +# to you under the Apache License, Version 2.0 (the +# "License"); you may not use this file except in compliance +# with the License. You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, +# software distributed under the License is distributed on an +# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY +# KIND, either express or implied. See the License for the +# specific language governing permissions and limitations +# under the License. diff --git a/src/iceberg/utils/bin_packing.py b/src/iceberg/utils/bin_packing.py new file mode 100644 index 0000000000..17d4faad26 --- /dev/null +++ b/src/iceberg/utils/bin_packing.py @@ -0,0 +1,81 @@ +# Licensed to the Apache Software Foundation (ASF) under one +# or more contributor license agreements. See the NOTICE file +# distributed with this work for additional information +# regarding copyright ownership. The ASF licenses this file +# to you under the Apache License, Version 2.0 (the +# "License"); you may not use this file except in compliance +# with the License. You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, +# software distributed under the License is distributed on an +# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY +# KIND, either express or implied. See the License for the +# specific language governing permissions and limitations +# under the License. + +class PackingIterator: + def __init__(self, items, target_weight, lookback, weight_func, largest_bin_first=False): + self.items = iter(items) + self.target_weight = target_weight + self.lookback = lookback + self.weight_func = weight_func + self.largest_bin_first = largest_bin_first + self.bins = list() + + def __iter__(self): + return self + + def __next__(self): + while True: + try: + item = next(self.items) + weight = self.weight_func(item) + bin_ = self.find_bin(weight) + if bin_ is not None: + bin_.add(item, weight) + else: + bin_ = self.Bin(self.target_weight) + bin_.add(item, weight) + self.bins.append(bin_) + + if len(self.bins) > self.lookback: + return list(self.remove_bin().items) + except StopIteration: + break + + if len(self.bins) == 0: + raise StopIteration() + + return list(self.remove_bin().items) + + def find_bin(self, weight): + for bin_ in self.bins: + if bin_.can_add(weight): + return bin_ + return None + + def remove_bin(self): + if self.largest_bin_first: + bin_ = max(self.bins, key=lambda b: b.weight()) + self.bins.remove(bin_) + return bin_ + else: + return self.bins.pop(0) + + class Bin: + def __init__(self, target_weight: int): + self.bin_weight = 0 + self.target_weight = target_weight + self.items: list = list() + + def weight(self) -> int: + return self.bin_weight + + def can_add(self, weight) -> bool: + return self.bin_weight + weight <= self.target_weight + + def add(self, item, weight): + self.bin_weight += weight + self.items.append(item) diff --git a/tests/__init__.py b/tests/__init__.py new file mode 100644 index 0000000000..13a83393a9 --- /dev/null +++ b/tests/__init__.py @@ -0,0 +1,16 @@ +# Licensed to the Apache Software Foundation (ASF) under one +# or more contributor license agreements. See the NOTICE file +# distributed with this work for additional information +# regarding copyright ownership. The ASF licenses this file +# to you under the Apache License, Version 2.0 (the +# "License"); you may not use this file except in compliance +# with the License. You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, +# software distributed under the License is distributed on an +# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY +# KIND, either express or implied. See the License for the +# specific language governing permissions and limitations +# under the License. diff --git a/tests/utils/__init__.py b/tests/utils/__init__.py new file mode 100644 index 0000000000..13a83393a9 --- /dev/null +++ b/tests/utils/__init__.py @@ -0,0 +1,16 @@ +# Licensed to the Apache Software Foundation (ASF) under one +# or more contributor license agreements. See the NOTICE file +# distributed with this work for additional information +# regarding copyright ownership. The ASF licenses this file +# to you under the Apache License, Version 2.0 (the +# "License"); you may not use this file except in compliance +# with the License. You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, +# software distributed under the License is distributed on an +# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY +# KIND, either express or implied. See the License for the +# specific language governing permissions and limitations +# under the License. diff --git a/tests/utils/test_bin_packing.py b/tests/utils/test_bin_packing.py new file mode 100644 index 0000000000..0cf44f132a --- /dev/null +++ b/tests/utils/test_bin_packing.py @@ -0,0 +1,50 @@ +# Licensed to the Apache Software Foundation (ASF) under one +# or more contributor license agreements. See the NOTICE file +# distributed with this work for additional information +# regarding copyright ownership. The ASF licenses this file +# to you under the Apache License, Version 2.0 (the +# "License"); you may not use this file except in compliance +# with the License. You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, +# software distributed under the License is distributed on an +# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY +# KIND, either express or implied. See the License for the +# specific language governing permissions and limitations +# under the License. + +import random + +from iceberg.utils.bin_packing import PackingIterator +import pytest + + +@pytest.mark.parametrize("splits, lookback, split_size, open_cost", [ + ([random.randint(0, 64) for x in range(200)], 20, 128, 4), # random splits + ([], 20, 128, 4), # no splits + ([0] * 100 + [random.randint(0, 64) in range(10)] + [0] * 100, 20, 128, 4) # sparse +]) +def test_bin_packing(splits, lookback, split_size, open_cost): + + def weight_func(x): + return max(x, open_cost) + + item_list_sums = [sum(item) + for item in PackingIterator(splits, split_size, lookback, weight_func)] + assert all([split_size >= item_sum >= 0 for item_sum in item_list_sums]) + + +@pytest.mark.parametrize("splits, target_weight, lookback, largest_bin_first, expected_lists", [ + ([36, 36, 36, 36, 73, 110, 128], 128, 2, True, [[110], [128], [36, 73], [36, 36, 36]]), + ([36, 36, 36, 36, 73, 110, 128], 128, 2, False, [[36, 36, 36], [36, 73], [110], [128]]), + ([64, 64, 128, 32, 32, 32, 32], 128, 1, True, [[64, 64], [128], [32, 32, 32, 32]]), + ([64, 64, 128, 32, 32, 32, 32], 128, 1, False, [[64, 64], [128], [32, 32, 32, 32]]), +]) +def test_bin_packing_lookback(splits, target_weight, lookback, largest_bin_first, expected_lists): + def weight_func(x): + return x + + assert [item for item in PackingIterator( + splits, target_weight, lookback, weight_func, largest_bin_first)] == expected_lists diff --git a/tox.ini b/tox.ini new file mode 100644 index 0000000000..d1596ea119 --- /dev/null +++ b/tox.ini @@ -0,0 +1,118 @@ +# Licensed to the Apache Software Foundation (ASF) under one +# or more contributor license agreements. See the NOTICE file +# distributed with this work for additional information +# regarding copyright ownership. The ASF licenses this file +# to you under the Apache License, Version 2.0 (the +# "License"); you may not use this file except in compliance +# with the License. You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, +# software distributed under the License is distributed on an +# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY +# KIND, either express or implied. See the License for the +# specific language governing permissions and limitations +# under the License. + +[tox] +envlist = py37,py38,py39,linters + +[testenv] +usedevelop = true +deps = + coverage + mock + nose + pytest +setenv = + COVERAGE_FILE = test-reports/{envname}/.coverage + PYTEST_ADDOPTS = --junitxml=test-reports/{envname}/junit.xml -vv +commands = + coverage run --source src --parallel-mode -m pytest {posargs} + coverage combine + coverage report -m --fail-under=90 + coverage html -d test-reports/{envname}/coverage-html + coverage xml -o test-reports/{envname}/coverage.xml + +[testenv:linters] +basepython = python3 +skip_install = true +deps = + . + {[testenv:flake8]deps} + {[testenv:bandit]deps} + {[testenv:mypy]deps} +commands = + {[testenv:flake8]commands} + {[testenv:bandit]commands} + {[testenv:mypy]commands} + +[testenv:flake8] +basepython = python3 +skip_install = true +deps = + flake8>=3.8.4 + flake8-import-order>=0.9 + flake8-bugbear +commands = + flake8 src setup.py tests + +[testenv:mypy] +basepython = python3 +skip_install = true +deps = + mypy + types-pytz + types-python-dateutil +commands = + mypy --ignore-missing-imports src/ + +[testenv:bandit] +basepython = python3 +skip_install = true +deps = + bandit +commands = + bandit --ini tox.ini -r src + +[testenv:docs] +basepython = python3 +deps = + -r docs/source/requirements.txt +commands = + sphinx-build -E -W -c docs/source/ -b html docs/source/ docs/build/html + sphinx-build -E -W -c docs/source/ -b man docs/source/ docs/build/man + +[testenv:serve-docs] +basepython = python3 +skip_install = true +changedir = docs/build/html +deps = +commands = + python -m http.server {posargs} + +[flake8] +ignore = E501,W503 +exclude = + *.egg-info, + *.pyc, + .cache, + .coverage.*, + .gradle, + .tox, + build, + dist, + htmlcov.* +max-complexity = 10 +import-order-style = google +application-import-names = flake8 + +[pytest] +norecursedirs=.* + +[gh-actions] +python = + 3.7: py37 + 3.8: py38, linters + 3.9: py39