ianmcook commented on code in PR #41: URL: https://github.com/apache/arrow-experiments/pull/41#discussion_r1852718624
########## http/get_simple/swift/Server/Sources/main.swift: ########## @@ -0,0 +1,75 @@ +/* + * 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 Foundation +import Arrow +import Hummingbird + +func makeRecordBatch(_ numRecords: UInt32) throws -> RecordBatch { + let doubleBuilder: NumberArrayBuilder<Double> = try ArrowArrayBuilders.loadNumberArrayBuilder() + let stringBuilder = try ArrowArrayBuilders.loadStringArrayBuilder() + let date32Builder = try ArrowArrayBuilders.loadDate32ArrayBuilder() + let date2 = Date(timeIntervalSinceReferenceDate: 86400 * 1) + let date1 = Date(timeIntervalSinceReferenceDate: 86400 * 5000 + 352) + for idx in 0..<numRecords { + doubleBuilder.append(11.11 * Double(idx)) + stringBuilder.append("test\(idx)") + if (idx & 1) == 1 { + date32Builder.append(date1) + } else { + date32Builder.append(date2) + } + } + + let doubleHolder = ArrowArrayHolderImpl(try doubleBuilder.finish()) + let stringHolder = ArrowArrayHolderImpl(try stringBuilder.finish()) + let date32Holder = ArrowArrayHolderImpl(try date32Builder.finish()) + let result = RecordBatch.Builder() + .addColumn("col1", arrowArray: doubleHolder) + .addColumn("col2", arrowArray: stringHolder) + .addColumn("col3", arrowArray: date32Holder) + .finish() + switch result { + case .success(let recordBatch): + return recordBatch + case .failure(let error): + throw error + } +} + +let router = Router() +router.get("/") { request, _ -> ByteBuffer in + print("received request from client") + let recordBatchs = [try makeRecordBatch(4), try makeRecordBatch(3)] + let arrowWriter = ArrowWriter() + let writerInfo = ArrowWriter.Info(.recordbatch, schema: recordBatchs[0].schema, batches: recordBatchs) + switch arrowWriter.toStream(writerInfo) { + case .success(let writeData): + print("sending recordBatchs: \(recordBatchs.count)") + return ByteBuffer(data: writeData) Review Comment: This sets the `Content-Type` response header to the appropriate value. ```suggestion return .init( status: .ok, headers: [.contentType: "application/vnd.apache.arrow.stream"], body: .init(byteBuffer: buffer)) ``` ########## http/get_simple/swift/Server/Sources/main.swift: ########## @@ -0,0 +1,75 @@ +/* + * 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 Foundation +import Arrow +import Hummingbird + +func makeRecordBatch(_ numRecords: UInt32) throws -> RecordBatch { + let doubleBuilder: NumberArrayBuilder<Double> = try ArrowArrayBuilders.loadNumberArrayBuilder() + let stringBuilder = try ArrowArrayBuilders.loadStringArrayBuilder() + let date32Builder = try ArrowArrayBuilders.loadDate32ArrayBuilder() + let date2 = Date(timeIntervalSinceReferenceDate: 86400 * 1) + let date1 = Date(timeIntervalSinceReferenceDate: 86400 * 5000 + 352) + for idx in 0..<numRecords { + doubleBuilder.append(11.11 * Double(idx)) + stringBuilder.append("test\(idx)") + if (idx & 1) == 1 { + date32Builder.append(date1) + } else { + date32Builder.append(date2) + } + } + + let doubleHolder = ArrowArrayHolderImpl(try doubleBuilder.finish()) + let stringHolder = ArrowArrayHolderImpl(try stringBuilder.finish()) + let date32Holder = ArrowArrayHolderImpl(try date32Builder.finish()) + let result = RecordBatch.Builder() + .addColumn("col1", arrowArray: doubleHolder) + .addColumn("col2", arrowArray: stringHolder) + .addColumn("col3", arrowArray: date32Holder) + .finish() + switch result { + case .success(let recordBatch): + return recordBatch + case .failure(let error): + throw error + } +} + +let router = Router() +router.get("/") { request, _ -> ByteBuffer in Review Comment: ```suggestion router.get("/") { request, _ -> Response in ``` -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
