################################################################################
#  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 logging
import os
import shutil
import sys
import tempfile

from pyflink.common import Configuration
from pyflink.common.typeinfo import Types
from pyflink.dataset import ExecutionEnvironment
from pyflink.datastream import StreamExecutionEnvironment, FilterFunction
from pyflink.table import BatchTableEnvironment, TableConfig
from pyflink.table import expressions as expr


def word_count():
    content = "line Licensed to the Apache Software Foundation ASF under one " \
              "line or more contributor license agreements See the NOTICE file " \
              "line distributed with this work for additional information " \
              "line regarding copyright ownership The ASF licenses this file " \
              "to you under the Apache License Version the " \
              "License you may not use this file except in compliance " \
              "with the License"

    t_config = TableConfig()
    env = ExecutionEnvironment.get_execution_environment()
    #t_config.set_python_executable("/opt/python38/bin/python3")
    # con/flink-conf.yaml 添加 python.client.executable: /usr/bin/python3
    t_env = BatchTableEnvironment.create(env, t_config)

    # register Results table in table environment
    tmp_dir = tempfile.gettempdir()
    result_path = tmp_dir + '/result'
    if os.path.exists(result_path):
        try:
            if os.path.isfile(result_path):
                os.remove(result_path)
            else:
                shutil.rmtree(result_path)
        except OSError as e:
            logging.error("Error removing directory: %s - %s.", e.filename, e.strerror)

    logging.info("Results directory: %s", result_path)

    sink_ddl = """
        create table Results(
            word VARCHAR,
            `count` BIGINT
        ) with (
            'connector.type' = 'filesystem',
            'format.type' = 'csv',
            'connector.path' = '{}'
        )
        """.format(result_path)
    t_env.execute_sql(sink_ddl)

    elements = [(word, 1) for word in content.split(" ")]
    table = t_env.from_elements(elements, ["word", "count"])


    table.group_by(table.word) \
        .select(table.word, expr.lit(1).count.alias('count')) \
        .execute_insert("Results").wait()

    #t_env.execute("")
class MyFilterFunction(FilterFunction):

    def filter(self, value):
        return value[0] % 2 == 0

# ./bin/flink run --python examples/python/table/batch/demo_stream.py
def demo_stream():
    see = StreamExecutionEnvironment.get_execution_environment()
    see.set_parallelism(1)
    #see.set_python_executable("/opt/python38/bin/python3")
    ds = see.from_collection([(1, 'Hi', 'Hello'), (2, 'Hello', 'Hi')],
                                      type_info=Types.ROW(
                                          [Types.INT(), Types.STRING(), Types.STRING()])
                                      )
    #ds.filter(MyFilterFunction()).print()
    ds.print()
    # 执行任务;
    see.execute('job1')

if __name__ == '__main__':
    demo_stream()

################################################################################
#  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 logging
import os
import shutil
import sys
import tempfile

from pyflink.common import Configuration
from pyflink.common.typeinfo import Types
from pyflink.dataset import ExecutionEnvironment
from pyflink.datastream import StreamExecutionEnvironment, FilterFunction
from pyflink.table import BatchTableEnvironment, TableConfig
from pyflink.table import expressions as expr


def word_count():
    content = "line Licensed to the Apache Software Foundation ASF under one " \
              "line or more contributor license agreements See the NOTICE file " \
              "line distributed with this work for additional information " \
              "line regarding copyright ownership The ASF licenses this file " \
              "to you under the Apache License Version the " \
              "License you may not use this file except in compliance " \
              "with the License"

    t_config = TableConfig()
    env = ExecutionEnvironment.get_execution_environment()
    #t_config.set_python_executable("/opt/python38/bin/python3")
    # con/flink-conf.yaml 添加 python.client.executable: /usr/bin/python3
    t_env = BatchTableEnvironment.create(env, t_config)

    # register Results table in table environment
    tmp_dir = tempfile.gettempdir()
    result_path = tmp_dir + '/result'
    if os.path.exists(result_path):
        try:
            if os.path.isfile(result_path):
                os.remove(result_path)
            else:
                shutil.rmtree(result_path)
        except OSError as e:
            logging.error("Error removing directory: %s - %s.", e.filename, e.strerror)

    logging.info("Results directory: %s", result_path)

    sink_ddl = """
        create table Results(
            word VARCHAR,
            `count` BIGINT
        ) with (
            'connector.type' = 'filesystem',
            'format.type' = 'csv',
            'connector.path' = '{}'
        )
        """.format(result_path)
    t_env.execute_sql(sink_ddl)

    elements = [(word, 1) for word in content.split(" ")]
    table = t_env.from_elements(elements, ["word", "count"])


    table.group_by(table.word) \
        .select(table.word, expr.lit(1).count.alias('count')) \
        .execute_insert("Results").wait()

    #t_env.execute("")
class MyFilterFunction(FilterFunction):

    def filter(self, value):
        return value[0] % 2 == 0

# ./bin/flink run --python examples/python/table/batch/demo_stream.py
def demo_stream():
    see = StreamExecutionEnvironment.get_execution_environment()
    see.set_parallelism(1)
    #see.set_python_executable("/opt/python38/bin/python3")
    ds = see.from_collection([(1, 'Hi', 'Hello'), (2, 'Hello', 'Hi')],
                                      type_info=Types.ROW(
                                          [Types.INT(), Types.STRING(), Types.STRING()])
                                      )
    #ds.filter(MyFilterFunction()).print()
    ds.print()
    # 执行任务;
    see.execute('job1')

if __name__ == '__main__':
    demo_stream()

################################################################################ #  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. ################################################################################ #t_config.set_python_executable("/opt/python38/bin/python3") # con/flink-conf.yaml 添加 python.client.executable: /usr/bin/python3 # register Results table in table environment create table Results(             word VARCHAR,             `count` BIGINT         ) with (             'connector.type' = 'filesystem',             'format.type' = 'csv',             'connector.path' = '{}'         ) #t_env.execute("") # ./bin/flink run --python examples/python/table/batch/demo_stream.py #see.set_python_executable("/opt/python38/bin/python3") #ds.filter(MyFilterFunction()).print() # 执行任务;