def test_stream_case(self):
from pyflink.shell import s_env, st_env, FileSystem, OldCsv, DataTypes, Schema
# example begin
import tempfile
import os
import shutil
sink_path = tempfile.gettempdir() + '/streaming.csv'
if os.path.exists(sink_path):
if os.path.isfile(sink_path):
os.remove(sink_path)
else:
shutil.rmtree(sink_path)
s_env.set_parallelism(1)
t = st_env.from_elements([(1, 'hi', 'hello'), (2, 'hi', 'hello')], ['a', 'b', 'c'])
st_env.connect(FileSystem().path(sink_path))\
.with_format(OldCsv()
.field_delimiter(',')
.field("a", DataTypes.BIGINT())
.field("b", DataTypes.STRING())
.field("c", DataTypes.STRING()))\
.with_schema(Schema()
.field("a", DataTypes.BIGINT())
.field("b", DataTypes.STRING())
.field("c", DataTypes.STRING()))\
.create_temporary_table("stream_sink")
t.select("a + 1, b, c").execute_insert("stream_sink").wait()
# verify code, do not copy these code to shell.py
with open(sink_path, 'r') as f:
lines = f.read()
self.assertEqual(lines, '2,hi,hello\n' + '3,hi,hello\n')
def test_stream_case(self):
from pyflink.shell import s_env, st_env, DataTypes
from pyflink.table.schema import Schema
from pyflink.table.table_descriptor import TableDescriptor, FormatDescriptor
# example begin
import tempfile
import os
import shutil
sink_path = tempfile.gettempdir() + '/streaming.csv'
if os.path.exists(sink_path):
if os.path.isfile(sink_path):
os.remove(sink_path)
else:
shutil.rmtree(sink_path)
s_env.set_parallelism(1)
t = st_env.from_elements([(1, 'hi', 'hello'), (2, 'hi', 'hello')],
['a', 'b', 'c'])
st_env.create_temporary_table(
"stream_sink",
TableDescriptor.for_connector("filesystem").schema(
Schema.new_builder().column("a", DataTypes.BIGINT()).column(
"b", DataTypes.STRING()).column(
"c", DataTypes.STRING()).build()).option(
"path", sink_path).format(
FormatDescriptor.for_format("csv").option(
"field-delimiter", ",").build()).build())
t.select(t.a + 1, t.b, t.c).execute_insert("stream_sink").wait()
# verify code, do not copy these code to shell.py
with open(os.path.join(sink_path, os.listdir(sink_path)[0]), 'r') as f:
lines = f.read()
self.assertEqual(lines, '2,hi,hello\n' + '3,hi,hello\n')
from pyflink.shell import s_env, st_env, DataTypes
from pyflink.table.schema import Schema
from pyflink.table.table_descriptor import TableDescriptor, FormatDescriptor
import tempfile
import os
import shutil
sink_path = tempfile.gettempdir() + '/batch.csv'
if os.path.exists(sink_path):
if os.path.isfile(sink_path):
os.remove(sink_path)
else:
shutil.rmtree(sink_path)
s_env.set_parallelism(1)
t = st_env.from_elements([(1, 'hi', 'hello'), (2, 'hi', 'hello')],
['a', 'b', 'c'])
st_env.create_temporary_table(
"csv_sink",
TableDescriptor.for_connector("filesystem").schema(
Schema.new_builder().column(
"a", DataTypes.BIGINT()).column("b", DataTypes.STRING()).column(
"c",
DataTypes.STRING()).build()).option("path", sink_path).format(
FormatDescriptor.for_format("csv").option(
"field-delimiter", ",").build()).build())
t.select(t.a + lit(1), t.b, t.c).execute_insert("csv_sink").wait()
with open(os.path.join(sink_path, os.listdir(sink_path)[0]), 'r') as f:
lines = f.read()