Question

我试图在Python 3.7中获取Google Cloud Function，以从Google Cloud Storage中获取文件并将其上传到AWS S3。在命令行中，我将使用awscli进行身份验证，然后使用gsutil cp命令复制文件。我已经将此过程翻译为python：

package test27;

import javafx.application.Application;
import static javafx.application.Application.launch;
import javafx.beans.property.SimpleStringProperty;
import javafx.beans.property.StringProperty;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.TableColumn;
import javafx.scene.control.TablePosition;
import javafx.scene.control.TableView;
import javafx.scene.control.cell.TextFieldTableCell;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.HBox;
import javafx.stage.Stage;

public class Test27 extends Application {

    TableView<TestModel> table = new TableView<>();

    //Both of these stop the "unchecked conversion" error on line #51 (previousPos = table.getFocusModel().getFocusedCell();)
    //    TablePosition previousPos;
        TablePosition<?, ?> previousPos;
    //but using the following generates the "unchecked conversion" error
    //    TablePosition<TestModel, ?> previousPos;

    private Parent createContent() {

        ObservableList<TestModel> olTestModel = FXCollections.observableArrayList();

        olTestModel.add(new TestModel("A"));
        olTestModel.add(new TestModel("B"));
        olTestModel.add(new TestModel("C"));

        table.setItems(olTestModel);

        TableColumn<TestModel, String> colText = new TableColumn<>("text");
        colText.setCellValueFactory(cellData -> cellData.getValue().textProperty());
        colText.setCellFactory(TextFieldTableCell.forTableColumn());

        table.getSelectionModel().setCellSelectionEnabled(true);
        table.setEditable(true);
        table.getColumns().add(colText);

        Button btnGetTablePosition = new Button("get table position");
        btnGetTablePosition.setOnAction(event -> {
            //TableView.java:  getFocusedCell returns TablePosition<S, ?>
            previousPos = table.getFocusModel().getFocusedCell(); //Line #51
            outputPreviousPos(previousPos);
        });

        Button btnMoveToPreviousPos = new Button("move to previous pos");
        btnMoveToPreviousPos.setOnAction(event -> {
            moveToPreviousPos(previousPos);
        });

        BorderPane content = new BorderPane(table);
        HBox hb = new HBox();
        hb.getChildren().addAll(btnGetTablePosition, btnMoveToPreviousPos);

        content.setTop(hb);

        return content;

    }

    public void outputPreviousPos(TablePosition previousPos){

        System.out.println("previousPos = " + previousPos);

    }

    public void moveToPreviousPos(TablePosition previousPos) {

        //select() in TableView.java expects TableColumn<S, ?>
        //getTableColumn() in TablePosition.java returns TableColumn<S,T>
        //getColumns() in TableView.java returns an ObservableList of type TableColumn(S, ?)

        //Is that why the following line generates  "unchecked method invocation" and "unchecked conversion" errors
        //table.getSelectionModel().select
        //      (previousPos.getRow(), previousPos.getTableColumn());
        //but the following line compiles clean?
        table.getSelectionModel().select
                (previousPos.getRow(), table.getColumns().get(previousPos.getColumn()));        

    }

    public class TestModel {

        private StringProperty text;

        public TestModel() {
            this("");
        }

        public TestModel(
            String text
        ) {
            this.text = new SimpleStringProperty(text);
        }

        public String getText() {
            return text.get();
        }

        public void setText(String text) {
            this.text.set(text);
        }

        public StringProperty textProperty() {
            return text;
        }

    }

    @Override
    public void start(Stage stage) throws Exception {
        stage.setScene(new Scene(createContent()));
        stage.setTitle("Test");
        stage.setWidth(500);
        stage.show();
    }

    public static void main(String[] args) {
        launch(args);
    }

}

requirements.txt是：

import subprocess def GCS_to_s3(arg1, arg2): subprocess.call(["aws configure set aws_access_key_id AKIA********"], shell=True) subprocess.call(["aws configure set aws_secret_access_key EgkjntEFFDVej"], shell=True) subprocess.call(["gsutil cp gs://test_bucket/gcs_test.csv s3://mybucket)"], shell=True)`

此功能成功部署并成功运行，但输出未显示在S3存储桶中。

编写这种功能的最佳方法是什么？

Answer 1

您可能想要改用boto3 Python软件包，因为命令行AWS工具无法用于Cloud Functions或无法安装。 There's a number of ways to configure credentials as well。

Google Cloud Functions-如何向AWS S3存储桶进行身份验证？

1 个答案: