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SQL documentation generation for built-in functions
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@@ -47,6 +47,8 @@ dev/pr-deps/ | |
dist/ | ||
docs/_site | ||
docs/api | ||
sql/docs | ||
sql/site | ||
lib_managed/ | ||
lint-r-report.log | ||
log/ | ||
|
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#!/bin/bash | ||
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# | ||
# 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. | ||
# | ||
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# Script to create SQL API docs. This requires `mkdocs`. | ||
# Also, it needs to build Spark first. | ||
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# After running this script the html docs can be found in | ||
# $SPARK_HOME/sql/docs/site | ||
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set -o pipefail | ||
set -e | ||
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FWDIR="$(cd "`dirname "${BASH_SOURCE[0]}"`"; pwd)" | ||
SPARK_HOME="$(cd "`dirname "${BASH_SOURCE[0]}"`"/..; pwd)" | ||
WAREHOUSE_DIR="$FWDIR/_spark-warehouse" | ||
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if ! hash python 2>/dev/null; then | ||
echo "Missing python in the path, skipping SQL documentation generation." | ||
exit 0 | ||
fi | ||
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if ! hash mkdocs 2>/dev/null; then | ||
echo "Missing mkdocs in the path, skipping SQL documentation generation." | ||
exit 0 | ||
fi | ||
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# Now create markdown file | ||
rm -fr docs | ||
rm -rf "$WAREHOUSE_DIR" | ||
mkdir docs | ||
echo "Generating markdown files for SQL documentation." | ||
"$SPARK_HOME/bin/spark-submit" \ | ||
--driver-java-options "-Dlog4j.configuration=file:$FWDIR/log4j.properties" \ | ||
--conf spark.sql.warehouse.dir="$WAREHOUSE_DIR" \ | ||
gen-sql-markdown.py | ||
rm -rf "$WAREHOUSE_DIR" | ||
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# Now create HTML files | ||
echo "Generating HTML files for SQL documentation." | ||
mkdocs build --clean |
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# | ||
# 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. | ||
# | ||
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import sys | ||
import os | ||
from collections import namedtuple | ||
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from pyspark.sql import SparkSession | ||
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ExpressionInfo = namedtuple("ExpressionInfo", "className usage name extended") | ||
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def _list_function_infos(spark): | ||
""" | ||
Returns a list of function information via JVM. Sorts wrapped expression infos by name | ||
and returns them. | ||
""" | ||
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jinfos = spark.sparkContext._jvm \ | ||
.org.apache.spark.sql.api.python.PythonSQLUtils.listBuiltinFunctionInfos() | ||
infos = [] | ||
for jinfo in jinfos: | ||
name = jinfo.getName() | ||
usage = jinfo.getUsage() | ||
usage = usage.replace("_FUNC_", name) if usage is not None else usage | ||
extended = jinfo.getExtended() | ||
extended = extended.replace("_FUNC_", name) if extended is not None else extended | ||
infos.append(ExpressionInfo( | ||
className=jinfo.getClassName(), | ||
usage=usage, | ||
name=name, | ||
extended=extended)) | ||
return sorted(infos, key=lambda i: i.name) | ||
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def _make_pretty_usage(usage): | ||
""" | ||
Makes the usage description pretty and returns a formatted string. | ||
Otherwise, returns None. | ||
""" | ||
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if usage is not None and usage.strip() != "": | ||
usage = "\n".join(map(lambda u: u.strip(), usage.split("\n"))) | ||
return "%s\n\n" % usage | ||
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def _make_pretty_extended(extended): | ||
""" | ||
Makes the extended description pretty and returns a formatted string. | ||
Otherwise, returns None. | ||
""" | ||
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if extended is not None and extended.strip() != "": | ||
extended = "\n".join(map(lambda u: u.strip(), extended.split("\n"))) | ||
return "```%s```\n\n" % extended | ||
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def generate_sql_markdown(spark, path): | ||
""" | ||
Generates a markdown file after listing the function information. The output file | ||
is created in `path`. | ||
""" | ||
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with open(path, 'w') as mdfile: | ||
for info in _list_function_infos(spark): | ||
mdfile.write("### %s\n\n" % info.name) | ||
usage = _make_pretty_usage(info.usage) | ||
extended = _make_pretty_extended(info.extended) | ||
if usage is not None: | ||
mdfile.write(usage) | ||
if extended is not None: | ||
mdfile.write(extended) | ||
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if __name__ == "__main__": | ||
spark = SparkSession \ | ||
.builder \ | ||
.appName("GenSQLDocs") \ | ||
.getOrCreate() | ||
markdown_file_path = "%s/docs/index.md" % os.path.dirname(sys.argv[0]) | ||
generate_sql_markdown(spark, markdown_file_path) | ||
spark.stop() |
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# | ||
# 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. | ||
# | ||
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# SQL documentation generation simply accesses to JVM and gets the list of functions. | ||
# Just suppresses info level logs. | ||
log4j.rootCategory=ERROR, console | ||
log4j.appender.console=org.apache.log4j.ConsoleAppender | ||
log4j.appender.console.target=System.err | ||
log4j.appender.console.layout=org.apache.log4j.PatternLayout | ||
log4j.appender.console.layout.ConversionPattern=%d{yy/MM/dd HH:mm:ss} %p %c{1}: %m%n |
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# 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. | ||
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site_name: Spark SQL, Built-in Functions | ||
theme: readthedocs | ||
pages: | ||
- 'Functions': 'index.md' |