VenuReddy2103 commented on a change in pull request #3819:
URL: https://github.com/apache/carbondata/pull/3819#discussion_r478375043
##########
File path:
sdk/sdk/src/main/java/org/apache/carbondata/sdk/file/CarbonWriterBuilder.java
##########
@@ -594,6 +607,446 @@ public CarbonWriterBuilder withJsonInput(Schema
carbonSchema) {
return this;
}
+ private void validateCsvFiles() throws IOException {
+ CarbonFile[] dataFiles =
this.extractDataFiles(CarbonCommonConstants.CSV_FILE_EXTENSION);
+ if (CollectionUtils.isEmpty(Arrays.asList(dataFiles))) {
+ throw new RuntimeException("CSV files can't be empty.");
+ }
+ for (CarbonFile dataFile : dataFiles) {
+ try {
+ CsvParser csvParser = SDKUtil.buildCsvParser(this.hadoopConf);
+
csvParser.beginParsing(FileFactory.getDataInputStream(dataFile.getPath(),
+ -1, this.hadoopConf));
+ } catch (IllegalArgumentException ex) {
+ if (ex.getCause() instanceof FileNotFoundException) {
+ throw new FileNotFoundException("File " + dataFile +
+ " not found to build carbon writer.");
+ }
+ throw ex;
+ }
+ }
+ this.dataFiles = dataFiles;
+ }
+
+ /**
+ * to build a {@link CarbonWriter}, which accepts loading CSV files.
+ *
+ * @param filePath absolute path under which files should be loaded.
+ * @return CarbonWriterBuilder
+ */
+ public CarbonWriterBuilder withCsvPath(String filePath) throws IOException {
+ this.validateFilePath(filePath);
+ this.filePath = filePath;
+ this.setIsDirectory(filePath);
+ this.withCsvInput();
+ this.validateCsvFiles();
+ return this;
+ }
+
+ /**
+ * to build a {@link CarbonWriter}, which accepts CSV files directory and
+ * list of file which has to be loaded.
+ *
+ * @param filePath directory where the CSV file exists.
+ * @param fileList list of files which has to be loaded.
+ * @return CarbonWriterBuilder
+ */
+ public CarbonWriterBuilder withCsvPath(String filePath, List<String>
fileList)
+ throws IOException {
+ this.fileList = fileList;
+ this.withCsvPath(filePath);
+ return this;
+ }
+
+ private void validateJsonFiles() throws IOException {
+ CarbonFile[] dataFiles =
this.extractDataFiles(CarbonCommonConstants.JSON_FILE_EXTENSION);
+ for (CarbonFile dataFile : dataFiles) {
+ try {
+ new JSONParser().parse(SDKUtil.buildJsonReader(dataFile,
this.hadoopConf));
+ } catch (FileNotFoundException ex) {
+ throw new FileNotFoundException("File " + dataFile + " not found to
build carbon writer.");
+ } catch (ParseException ex) {
+ throw new RuntimeException("File " + dataFile + " is not in json
format.");
+ }
+ }
+ this.dataFiles = dataFiles;
+ }
+
+ /**
+ * to build a {@link CarbonWriter}, which accepts loading JSON files.
+ *
+ * @param filePath absolute path under which files should be loaded.
+ * @return CarbonWriterBuilder
+ */
+ public CarbonWriterBuilder withJsonPath(String filePath) throws IOException {
+ this.validateFilePath(filePath);
+ this.filePath = filePath;
+ this.setIsDirectory(filePath);
+ this.withJsonInput();
+ this.validateJsonFiles();
+ return this;
+ }
+
+ /**
+ * to build a {@link CarbonWriter}, which accepts JSON file directory and
+ * list of file which has to be loaded.
+ *
+ * @param filePath directory where the json file exists.
+ * @param fileList list of files which has to be loaded.
+ * @return CarbonWriterBuilder
+ * @throws IOException
+ */
+ public CarbonWriterBuilder withJsonPath(String filePath, List<String>
fileList)
+ throws IOException {
+ this.fileList = fileList;
+ this.withJsonPath(filePath);
+ return this;
+ }
+
+ private void validateFilePath(String filePath) {
+ if (StringUtils.isEmpty(filePath)) {
+ throw new IllegalArgumentException("filePath can not be empty");
+ }
+ }
+
+ /**
+ * to build a {@link CarbonWriter}, which accepts loading Parquet files.
+ *
+ * @param filePath absolute path under which files should be loaded.
+ * @return CarbonWriterBuilder
+ */
+ public CarbonWriterBuilder withParquetPath(String filePath) throws
IOException {
+ this.validateFilePath(filePath);
+ this.filePath = filePath;
+ this.setIsDirectory(filePath);
+ this.writerType = WRITER_TYPE.PARQUET;
+ this.validateParquetFiles();
+ return this;
+ }
+
+ private void setIsDirectory(String filePath) {
+ if (this.hadoopConf == null) {
+ this.hadoopConf = new Configuration(FileFactory.getConfiguration());
+ }
+ CarbonFile carbonFile = FileFactory.getCarbonFile(filePath, hadoopConf);
+ this.isDirectory = carbonFile.isDirectory();
+ }
+
+ /**
+ * to build a {@link CarbonWriter}, which accepts parquet files directory and
+ * list of file which has to be loaded.
+ *
+ * @param filePath directory where the parquet file exists.
+ * @param fileList list of files which has to be loaded.
+ * @return CarbonWriterBuilder
+ * @throws IOException
+ */
+ public CarbonWriterBuilder withParquetPath(String filePath, List<String>
fileList)
+ throws IOException {
+ this.fileList = fileList;
+ this.withParquetPath(filePath);
+ return this;
+ }
+
+ private void validateParquetFiles() throws IOException {
+ CarbonFile[] dataFiles =
this.extractDataFiles(CarbonCommonConstants.PARQUET_FILE_EXT);
+ org.apache.avro.Schema parquetSchema = null;
+ for (CarbonFile dataFile : dataFiles) {
+ try {
+ ParquetReader<GenericRecord> parquetReader =
+ SDKUtil.buildParquetReader(dataFile.getPath(), this.hadoopConf);
+ if (parquetSchema == null) {
+ parquetSchema = parquetReader.read().getSchema();
+ } else {
+ if (!parquetSchema.equals(parquetReader.read().getSchema())) {
+ throw new RuntimeException("All the parquet files must be having
the same schema.");
+ }
+ }
+ } catch (IllegalArgumentException ex) {
+ if (ex.getMessage() != null && ex.getMessage()
+ .contains("INT96 not implemented and is deprecated")) {
+ throw new IllegalArgumentException("Carbon does not support parquet
INT96 data type.");
+ }
+ throw ex;
+ } catch (UnsupportedOperationException ex) {
+ if (ex.getMessage() != null && ex.getMessage()
+ .contains("REPEATED not supported outside LIST or MAP.")) {
+ throw new UnsupportedOperationException("Carbon does not support " +
+ "repeated parquet schema outside of list or map.");
+ }
+ throw ex;
+ } catch (RuntimeException ex) {
+ if (ex.getMessage() != null && ex.getMessage().contains("not a Parquet
file")) {
+ throw new RuntimeException("File " + dataFile + " is not in parquet
format.");
+ }
+ throw ex;
+ }
+ }
+ this.dataFiles = dataFiles;
+ this.avroSchema = parquetSchema;
+ this.schema =
AvroCarbonWriter.getCarbonSchemaFromAvroSchema(this.avroSchema);
+ }
+
+ private CarbonFile[] extractDataFiles(String suf) {
+ List<CarbonFile> dataFiles;
+ if (this.hadoopConf == null) {
+ this.hadoopConf = new Configuration(FileFactory.getConfiguration());
+ }
+ if (this.isDirectory) {
+ if (CollectionUtils.isEmpty(this.fileList)) {
+ dataFiles = SDKUtil.extractFilesFromFolder(this.filePath, suf,
this.hadoopConf);
+ } else {
+ dataFiles = this.appendFileListWithPath();
+ }
+ } else {
+ dataFiles = new ArrayList<>();
+ dataFiles.add(FileFactory.getCarbonFile(this.filePath, this.hadoopConf));
+ }
+ return dataFiles.toArray(new CarbonFile[0]);
+ }
+
+ /**
+ * to build a {@link CarbonWriter}, which accepts loading ORC files.
+ *
+ * @param filePath absolute path under which files should be loaded.
+ * @return CarbonWriterBuilder
+ */
+ public CarbonWriterBuilder withOrcPath(String filePath) throws IOException {
+ this.validateFilePath(filePath);
+ this.filePath = filePath;
+ this.setIsDirectory(filePath);
+ this.writerType = WRITER_TYPE.ORC;
+ Map<String, String> options = new HashMap<>();
+ options.put("complex_delimiter_level_1",
+ CarbonCommonConstants.COMPLEX_DELIMITERS_LEVEL_1_DEFAULT);
+ options.put("complex_delimiter_level_2",
+ CarbonCommonConstants.COMPLEX_DELIMITERS_LEVEL_2_DEFAULT);
+ options.put("complex_delimiter_level_3",
+ CarbonCommonConstants.COMPLEX_DELIMITERS_LEVEL_3_DEFAULT);
+ this.withLoadOptions(options);
+ this.buildOrcReader();
Review comment:
This buildOrcReader seem to be for validation. Same as above comment
regarding validate method
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