GCS Additonal e2e tests

src/e2e-test/java/io/cdap/plugin/common/stepsdesign/TestSetupHooks.java

@@ -178,7 +178,8 @@ public static void createBucketWithAvroTestFile() throws IOException, URISyntaxE
   @After(order = 1, value = "@GCS_CSV_TEST or @GCS_TSV_TEST or @GCS_BLOB_TEST " +
     "or @GCS_DELIMITED_TEST or @GCS_TEXT_TEST or @GCS_OUTPUT_FIELD_TEST or @GCS_DATATYPE_1_TEST or " +
     "@GCS_DATATYPE_2_TEST or @GCS_READ_RECURSIVE_TEST or @GCS_DELETE_WILDCARD_TEST or @GCS_CSV_RANGE_TEST or" +
-    " @GCS_PARQUET_TEST or @GCS_AVRO_TEST or @GCS_DATATYPE_TEST or @GCS_AVRO_FILE")
+    " @GCS_PARQUET_TEST or @GCS_AVRO_TEST or @GCS_DATATYPE_TEST or @GCS_AVRO_FILE or @GCS_CSV or " +
+    "@GCS_MULTIPLE_FILES_TEST or @GCS_MULTIPLE_FILES_REGEX_TEST")
   public static void deleteSourceBucketWithFile() {
     deleteGCSBucket(gcsSourceBucketName);
     PluginPropertyUtils.removePluginProp("gcsSourceBucketName");
@@ -924,4 +925,20 @@ public static void createSourceBQUpdateTable() throws IOException, InterruptedEx
   public static void createGcsBucketWithAvro() throws IOException, URISyntaxException {
     gcsSourceBucketName = createGCSBucketWithFile(PluginPropertyUtils.pluginProp("gcsAvroAllDataFile"));
   }
+
+  @Before(order = 1, value = "@GCS_CSV")
+  public static void createGcsBucketWithCsv() throws IOException, URISyntaxException {
+    gcsSourceBucketName = createGCSBucketWithFile(PluginPropertyUtils.pluginProp("gcsCsvDataFile"));
+  }
+
+  @Before(order = 1, value = "@GCS_MULTIPLE_FILES_TEST")
+  public static void createBucketWithMultipleTestFiles() throws IOException, URISyntaxException {
+    gcsSourceBucketName = createGCSBucketWithMultipleFiles(PluginPropertyUtils.pluginProp("gcsMultipleFilesPath"));
+  }
+
+  @Before(order = 1, value = "@GCS_MULTIPLE_FILES_REGEX_TEST")
+  public static void createBucketWithMultipleTestFilesWithRegex() throws IOException, URISyntaxException {
+    gcsSourceBucketName = createGCSBucketWithMultipleFiles(PluginPropertyUtils.pluginProp(
+      "gcsMultipleFilesFilterRegexPath"));
+  }
 }

src/e2e-test/java/io/cdap/plugin/gcs/GCSValidationHelper.java

@@ -16,19 +16,26 @@
 
 package io.cdap.plugin.gcs;
 
+import au.com.bytecode.opencsv.CSVReader;
+import com.esotericsoftware.minlog.Log;
 import com.google.api.gax.paging.Page;
 import com.google.cloud.storage.Blob;
 import com.google.cloud.storage.Storage;
 import com.google.cloud.storage.StorageOptions;
 import com.google.gson.Gson;
+import com.google.gson.JsonElement;
 import com.google.gson.JsonObject;
 import io.cdap.e2e.utils.PluginPropertyUtils;
+import io.cdap.plugin.utils.DataFileFormat;
 import org.apache.avro.file.DataFileReader;
 import org.apache.avro.file.FileReader;
 import org.apache.avro.generic.GenericDatumReader;
 import org.apache.avro.generic.GenericRecord;
 import org.apache.avro.io.DatumReader;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
+import java.io.BufferedReader;
 import java.io.File;
 import java.io.IOException;
 import java.nio.charset.StandardCharsets;
@@ -44,8 +51,40 @@
  */
 public class GCSValidationHelper {
   private static final String avroFilePath = PluginPropertyUtils.pluginProp("gcsAvroExpectedFilePath");
-  private static final String projectId = PluginPropertyUtils.pluginProp("projectId");
+  private static final String csvFilePath = PluginPropertyUtils.pluginProp("gcsCsvExpectedFilePath");
+  private static final String jsonFilePath = PluginPropertyUtils.pluginProp("gcsMultipleFilesRegexFilePath");
   private static final Gson gson = new Gson();
+  private static final Logger LOG = LoggerFactory.getLogger(GCSValidationHelper.class);
+
+  /**
+   * Validates data in a Google Cloud Storage (GCS) bucket against expected JSON content.
+   *
+   * @param bucketName The name of the GCS bucket to validate.
+   * @return true if the GCS bucket's content matches the expected JSON data, false otherwise.
+   */
+  public static boolean validateGCSSourceToGCSSinkWithJsonFormat(String bucketName) {
+    Map<String, JsonObject> expectedTextJsonData = new HashMap<>();
+    getFileData(jsonFilePath, expectedTextJsonData);
+    Map<String, JsonObject> actualGcsCsvData = listBucketObjects(bucketName, DataFileFormat.JSON);
+    boolean isMatched = actualGcsCsvData.equals(expectedTextJsonData);
+    return isMatched;
+  }
+
+  /**
+   * Validates if the data in a (GCS) bucket matches the expected CSV data in JSON format.
+   *
+   * @param bucketName The name of the GCS bucket to validate.
+   * @return True if the GCS CSV data matches the expected data, false otherwise.
+   * @throws IOException If an IO error occurs during data retrieval.
+   */
+  public static boolean validateGCSSourceToGCSSinkWithCSVFormat(String bucketName) {
+    Map<String, JsonObject> expectedCSVData = readCsvFileDataAndConvertToJson(csvFilePath);
+    Map<String, JsonObject> actualGcsCsvData = listBucketObjects(bucketName, DataFileFormat.CSV);
+
+    boolean isMatched = actualGcsCsvData.equals(expectedCSVData);
+
+    return isMatched;
+  }
 
   /**
    * Validates if the data in a (GCS) bucket matches the data
@@ -55,15 +94,19 @@ public class GCSValidationHelper {
    * @return True if the GCS data matches the Avro data, false otherwise.
    * @throws IOException If an IO error occurs during data retrieval.
    */
-  public static boolean validateGCSSourceToGCSSink(String bucketName) throws IOException {
-    Map<String, JsonObject> expectedAvroData = convertAvroToJsonWithKeys();
-    Map<String, JsonObject> actualGcsData = listBucketObjects(bucketName);
+  public static boolean validateGCSSourceToGCSSinkWithAVROFormat(String bucketName) throws IOException {
+    Map<String, JsonObject> expectedAvroData = convertAvroToJsonWithKeys(avroFilePath);
+    Map<String, JsonObject> actualGcsData = listBucketObjects(bucketName, DataFileFormat.JSON);
+
     boolean isMatched = actualGcsData.equals(expectedAvroData);
+
     return isMatched;
   }
 
-  public static Map<String, JsonObject> listBucketObjects(String bucketName) {
+
+  public static Map<String, JsonObject> listBucketObjects(String bucketName, DataFileFormat dataFormat) {
     Map<String, JsonObject> bucketObjectData = new HashMap<>();
+    String projectId = PluginPropertyUtils.pluginProp("projectId");
     Storage storage = StorageOptions.newBuilder().setProjectId(projectId).build().getService();
     Page<Blob> blobs = storage.list(bucketName);
 
@@ -77,49 +120,106 @@ public static Map<String, JsonObject> listBucketObjects(String bucketName) {
     if (!bucketObjectNames.isEmpty()) {
       String objectName = bucketObjectNames.get(0);
       if (objectName.contains("part-r")) {
-        Map<String, JsonObject> dataMap = fetchObjectData(projectId, bucketName, objectName);
+        Map<String, JsonObject> dataMap = fetchObjectData(projectId, bucketName, objectName, dataFormat);
         bucketObjectData.putAll(dataMap);
       }
     }
+
     return bucketObjectData;
   }
 
   /**
-   * Fetches the data of a specific object from a GCS bucket
-   * and converts it to a map of JSON objects.
+   * Fetches and parses data from a specified object in a GCS bucket.
    *
-   * @param projectId  The ID of the GCP project.
-   * @param bucketName The name of the GCS bucket containing the object.
-   * @param objectName The name of the object to fetch.
-   * @return A map of object data where keys are IDs and values are JSON objects.
+   * @param projectId  The ID of the GCP project where the GCS bucket is located.
+   * @param bucketName The name of the GCS bucket containing the object to fetch.
+   * @param objectName The name of the object to fetch from the GCS bucket.
+   * @param format     The format of the object data (JSON or CSV).
+   * @return A Map containing the parsed data from the object, with string keys and JSON objects as values.
    */
-  private static Map<String, JsonObject> fetchObjectData(String projectId, String bucketName, String objectName) {
+  public static Map<String, JsonObject> fetchObjectData(String projectId, String bucketName, String objectName,
+                                                        DataFileFormat format) {
     Map<String, JsonObject> dataMap = new HashMap<>();
     Storage storage = StorageOptions.newBuilder().setProjectId(projectId).build().getService();
     byte[] objectData = storage.readAllBytes(bucketName, objectName);
     String objectDataAsString = new String(objectData, StandardCharsets.UTF_8);
 
-    // Splitting using the delimiter as a File can have more than one record.
-    String[] lines = objectDataAsString.split("\n");
+    switch (format) {
+      case JSON:
+        parseDataToJson(objectDataAsString, dataMap);
+        break;
+      case CSV:
+        parseCsvDataToJson(objectDataAsString, dataMap);
+        break;
+      default:
+        LOG.error("Unsupported File Format");
+        break;
+    }
+    return dataMap;
+  }
+
+  private static void parseDataToJson(String data, Map<String, JsonObject> dataMap) {
+    String[] lines = data.split("\n");
     for (String line : lines) {
       JsonObject json = gson.fromJson(line, JsonObject.class);
       String id = json.get("id").getAsString();
       dataMap.put(id, json);
     }
-    return dataMap;
+  }
+
+  private static void parseCsvDataToJson(String data, Map<String, JsonObject> dataMap) {
+    String[] lines = data.split("\n");
+    String[] headers = lines[0].split(",");
+
+    for (int lineCount = 1; lineCount < lines.length; lineCount++) {
+      String[] values = lines[lineCount].split(",");
+      JsonObject jsonObject = new JsonObject();
+      for (int headerCount = 0; headerCount < headers.length; headerCount++) {
+        jsonObject.addProperty(headers[headerCount], values[headerCount]);
+      }
+      String id = values[0];
+      dataMap.put(id, jsonObject);
+    }
+  }
+
+  /**
+   * Converts data from a CSV filePath to a map of JSON objects.
+   *
+   * @return A map with identifiers (e.g., ID from the first column) as keys and JSON objects as values.
+   * @throws IOException If there's an error reading the CSV file.
+   */
+  public static Map<String, JsonObject> readCsvFileDataAndConvertToJson(String filePath) {
+    Map<String, JsonObject> csvDataMap = new HashMap<>();
+    try (CSVReader csvReader = new CSVReader(new java.io.FileReader(filePath))) {
+      // Read the header line to get column names
+      String[] headers = csvReader.readNext();
+
+      String[] line;
+      while ((line = csvReader.readNext()) != null) {
+        JsonObject jsonObject = new JsonObject();
+
+        for (int j = 0; j < headers.length; j++) {
+          jsonObject.addProperty(headers[j], line[j]);
+        }
+        String id = line[0];
+        csvDataMap.put(id, jsonObject);
+      }
+    } catch (IOException e) {
+      e.printStackTrace();
+    }
+    return csvDataMap;
   }
 
   /**
-   * Converts Avro files to JSON objects with keys and stores them in a map.
+   * Converts Avro filePath to JSON objects with keys and stores them in a map.
    *
    * @return A map of keys to JSON objects representing the Avro data.
    * @throws IOException If an IO error occurs during Avro to JSON conversion.
    */
-  public static Map<String, JsonObject> convertAvroToJsonWithKeys() throws IOException {
-    File avroFile = new File(avroFilePath);
+  public static Map<String, JsonObject> convertAvroToJsonWithKeys(String filePath) throws IOException {
+    File avroFile = new File(filePath);
     DatumReader<GenericRecord> datumReader = new GenericDatumReader<>();
     Map<String, JsonObject> avroDataMap = new HashMap<>();
-
     try (FileReader<GenericRecord> dataFileReader = DataFileReader.openReader(avroFile, datumReader)) {
       int keyCounter = 1;
       while (dataFileReader.hasNext()) {
@@ -132,4 +232,31 @@ public static Map<String, JsonObject> convertAvroToJsonWithKeys() throws IOExcep
     }
     return avroDataMap;
   }
+
+  /**
+   * Reads data from a JSON file, parses each line into JSON objects, and populates a provided
+   * map with these objects, using the "ID" field as the key.
+   *
+   * @param fileName The name of the JSON file to read.
+   * @param fileMap  A map where parsed JSON objects will be stored with their "ID" field as the key.
+   */
+  public static void getFileData(String fileName, Map<String, JsonObject> fileMap) {
+    try (BufferedReader br = new BufferedReader(new java.io.FileReader(fileName))) {
+      String line;
+      while ((line = br.readLine()) != null) {
+        JsonObject json = gson.fromJson(line, JsonObject.class);
+        if (json.has("id")) { // Check if the JSON object has the "id" key
+          JsonElement idElement = json.get("id");
+          if (idElement.isJsonPrimitive()) {
+            String idKey = idElement.getAsString();
+            fileMap.put(idKey, json);
+          } else {
+            Log.error("ID key not found");
+          }
+        }
+      }
+    } catch (IOException e) {
+      System.err.println("Error reading the file: " + e.getMessage());
+    }
+  }
 }

src/e2e-test/java/io/cdap/plugin/gcs/stepsdesign/GCSSource.java

@@ -134,6 +134,16 @@ public void selectGCSSourcePropertyPathFilenameOnlyAs(String value) {
     "GCS bucket")
   public void validateTheDataTransferredFromGCSSourceToGCSSinkWithExpectedAvroFileAndTargetDataInGCSBucket() throws
     IOException {
-    GCSValidationHelper.validateGCSSourceToGCSSink(TestSetupHooks.gcsTargetBucketName);
+    GCSValidationHelper.validateGCSSourceToGCSSinkWithAVROFormat(TestSetupHooks.gcsTargetBucketName);
+  }
+
+  @Then("Validate the data from GCS Source to GCS Sink with expected csv file and target data in GCS bucket")
+  public void validateTheDataFromGCSSourceToGCSSinkWithExpectedCsvFileAndTargetDataInGCSBucket() {
+    GCSValidationHelper.validateGCSSourceToGCSSinkWithCSVFormat(TestSetupHooks.gcsTargetBucketName);
+  }
+
+  @Then("Validate the data from GCS Source to GCS Sink with expected json file and target data in GCS bucket")
+  public void validateTheDataFromGCSSourceToGCSSinkWithExpectedJsonFileAndTargetDataInGCSBucket() {
+    GCSValidationHelper.validateGCSSourceToGCSSinkWithJsonFormat(TestSetupHooks.gcsTargetBucketName);
   }
 }

src/e2e-test/java/io/cdap/plugin/utils/DataFileFormat.java

@@ -0,0 +1,29 @@
+/*
+ * Copyright © 2023 Cask Data, Inc.
+ *
+ * Licensed 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.
+ */
+package io.cdap.plugin.utils;
+
+
+/**
+ * Enumeration representing different data file formats that can be used
+ * for storing and retrieving data, such as JSON and CSV.
+ */
+
+public enum DataFileFormat {
+
+  JSON, // Represents JSON format
+  CSV  // Represents CSV format
+}
+

src/e2e-test/resources/errorMessage.properties

@@ -27,4 +27,7 @@ errorMessageInvalidReferenceName=Invalid reference name
 errorMessageInvalidBucketName=Invalid bucket name in path
 errorMessageInvalidFormat=Input has multi-level structure that cannot be represented appropriately as csv. \
   Consider using json, avro or parquet to write data.
+errorMessageMultipleFileWithFirstRowAsHeaderDisabled=Spark program 'phase-1' failed with error: Found a row with 6 fields when the schema only contains 4 fields. Check that the schema contains the right number of fields.. Please check the system logs for more details.
+errorMessageMultipleFileWithFirstRowAsHeaderEnabled=Spark program 'phase-1' failed with error: For input string:
+errorMessageMultipleFileWithoutClearDefaultSchema=Spark program 'phase-1' failed with error: Found a row with 4 fields when the schema only contains 2 fields.
 

src/e2e-test/resources/pluginParameters.properties

@@ -133,6 +133,15 @@ gcsAvroAllTypeDataSchema=[{"key":"id","value":"long"},{"key":"array","value":"st
   {"key":"time","value":"timestamp"}]
 gcsAvroAllDataFile=testdata/GCS_ALL_TYPES.avro
 gcsAvroExpectedFilePath=src/e2e-test/resources/testdata/GCS_ALL_TYPES.avro
+gcsCsvDataFile=testdata/GCS_CSV.csv
+gcsMultipleFilesFilterRegexPath=testdata/GCS_MULTIPLEFILE_REGEX_TEST
+fileRegexValue=.+vehicle_inventory.*
+gcsMultipleFilesRegexFilePath=testdata/Multiple_File_Regex_Test
+delimiterValue=;
+gcsMultipleFilesPath=testdata/GCS_MULTIPLEFILE_TEST
+gcsCsvExpectedFilePath=src/e2e-test/resources/testdata/GCS_CSV.csv
+gcsSingleFileDataSchema=[{"key":"id","value":"int"},{"key":"Name","value":"string"},\
+  {"key":"Age","value":"int"},{"key":"City","value":"string"},{"key":"town","value":"string"}]
 gcsOutputFilePrefix=Bigdata
 gcsPathSuffix=2022-02-28-13-22
 gcsCreateObject1=gcscreatetestfolder1

src/e2e-test/resources/testdata/GCS_CSV.csv

@@ -0,0 +1,5 @@
+id;Name;Age;City;town
+1;Alex;33;Sydney;New South Wales
+2;Johnson;43;Miami;Florida
+3;Smith;28;Canberra;Australian Capital Territory
+4;Steve;30;Washington;DC

src/e2e-test/resources/testdata/GCS_MULTIPLEFILE_REGEX_TEST/book.csv

@@ -0,0 +1,3 @@
+id;Title;Author;Year;Genre;Price
+50001;To Kill a Mockingbird;Harper Lee;1960;Fiction;12.99
+60002;The Great Gatsby;F. Scott Fitzgerald;1925;Classics;10.99

src/e2e-test/resources/testdata/GCS_MULTIPLEFILE_REGEX_TEST/vehicle_inventory-part-1.csv

@@ -0,0 +1,3 @@
+id;Make;Model;Year;Color;Price;Mileage
+10012;Toyota;Camry;2022;Blue;25000;15000
+20034;Honda;CR-V;2023;Red;28000;12000

src/e2e-test/resources/testdata/GCS_MULTIPLEFILE_REGEX_TEST/vehicle_inventory-part-2.csv

@@ -0,0 +1,3 @@
+id;Make;Model;Year;Color;Price;Mileage
+30045;Ford;Fusion;2022;Silver;22000;18000
+40056;Chevrolet;Equinox;2023;White;27000;14000

src/e2e-test/resources/testdata/GCS_MULTIPLEFILE_TEST/authors-part-1.csv

@@ -0,0 +1,3 @@
+id;name;age;yearOfBirth
+1;Albert Einstein;76;1879
+2;Isaac Newton;84;1643

src/e2e-test/resources/testdata/GCS_MULTIPLEFILE_TEST/authors-part-2.csv

@@ -0,0 +1,3 @@
+title;city;country;state
+Year of Jupyter;delhi;india;delhi
+The return of Avalon;chandigarh;india;haryana

src/e2e-test/resources/testdata/Multiple_File_Regex_Test

@@ -0,0 +1,4 @@
+{"id":10012,"Make":"Toyota","Model":"Camry","Year":2022,"Color":"Blue","Price":25000,"Mileage":15000}
+{"id":20034,"Make":"Honda","Model":"CR-V","Year":2023,"Color":"Red","Price":28000,"Mileage":12000}
+{"id":30045,"Make":"Ford","Model":"Fusion","Year":2022,"Color":"Silver","Price":22000,"Mileage":18000}
+{"id":40056,"Make":"Chevrolet","Model":"Equinox","Year":2023,"Color":"White","Price":27000,"Mileage":14000}