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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.
require_relative "info-generator"
module Helper
class Server < ArrowFlightSQL::Server
type_register
private
def virtual_do_get_flight_info_statement(context, command, descriptor)
generator = InfoGenerator.new
@current_query = command.query
handle = generate_handle(@current_query)
generator.page_view(handle)
end
def virtual_do_do_get_statement(context, command)
unless command.handle.to_s == @current_query
raise Arrow::Error::Invalid.new("invalid ticket")
end
generator = InfoGenerator.new
table = generator.page_view_table
ArrowFlight::RecordBatchStream.new(table)
end
def virtual_do_create_prepared_statement(context, request)
unless request.query == "INSERT INTO page_view_table VALUES ($1, true)"
raise Arrow::Error::Invalid.new("invalid SQL")
end
result = ArrowFlightSQL::CreatePreparedStatementResult.new
generator = InfoGenerator.new
table = generator.page_view_table
result.dataset_schema = table.schema
result.parameter_schema = table.schema.remove_field(1)
result.handle = "valid-handle"
result
end
def virtual_do_do_put_prepared_statement_update(context, command, reader)
unless command.handle.to_s == "valid-handle"
raise Arrow::Error::Invalid.new("invalid handle")
end
reader.read_all.n_rows
end
def virtual_do_close_prepared_statement(context, request)
unless request.handle.to_s == "valid-handle"
raise Arrow::Error::Invalid.new("invalid handle")
end
access_key = context.incoming_headers.assoc("x-access-key")
unless access_key == ["x-access-key", "secret"]
message = "invalid access key: #{access_key.inspect}"
raise Arrow::Error::Invalid.new(message)
end
end
end
end
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