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-rw-r--r--pmdictionaryvalidation/src/main/java/org/onap/validation/cli/Main.java48
-rw-r--r--pmdictionaryvalidation/src/main/java/org/onap/validation/cli/command/validate/OutputFilePathGenerator.java41
-rw-r--r--pmdictionaryvalidation/src/main/java/org/onap/validation/cli/command/validate/ResponseModel.java51
-rw-r--r--pmdictionaryvalidation/src/main/java/org/onap/validation/cli/command/validate/ResponseStorage.java30
-rw-r--r--pmdictionaryvalidation/src/main/java/org/onap/validation/cli/command/validate/ToJsonConverter.java28
-rw-r--r--pmdictionaryvalidation/src/main/java/org/onap/validation/cli/command/validate/ValidatePmDictionaryYamlCommand.java92
-rw-r--r--pmdictionaryvalidation/src/main/java/org/onap/validation/cli/core/Cli.java85
-rw-r--r--pmdictionaryvalidation/src/main/java/org/onap/validation/cli/core/Command.java29
-rw-r--r--pmdictionaryvalidation/src/main/java/org/onap/validation/cli/core/CommandException.java27
-rw-r--r--pmdictionaryvalidation/src/main/java/org/onap/validation/cli/core/CommandResponse.java40
-rw-r--r--pmdictionaryvalidation/src/main/java/org/onap/validation/cli/core/Console.java41
-rw-r--r--pmdictionaryvalidation/src/main/java/org/onap/validation/yaml/util/Args.java36
12 files changed, 548 insertions, 0 deletions
diff --git a/pmdictionaryvalidation/src/main/java/org/onap/validation/cli/Main.java b/pmdictionaryvalidation/src/main/java/org/onap/validation/cli/Main.java
new file mode 100644
index 0000000..5ab2e69
--- /dev/null
+++ b/pmdictionaryvalidation/src/main/java/org/onap/validation/cli/Main.java
@@ -0,0 +1,48 @@
+/*
+ * Copyright 2020 Nokia
+ *
+ * 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 org.onap.validation.cli;
+
+import org.onap.validation.cli.command.validate.ResponseStorage;
+import org.onap.validation.cli.command.validate.ToJsonConverter;
+import org.onap.validation.cli.command.validate.ValidatePmDictionaryYamlCommand;
+import org.onap.validation.cli.core.Cli;
+import org.onap.validation.cli.core.Console;
+import org.onap.validation.yaml.util.Args;
+
+import java.util.List;
+
+public class Main {
+
+ public static void main(String[] args) {
+ final Console console = new Console();
+ final ResponseStorage storage = new ResponseStorage();
+
+ System.exit(
+ run(args, console, storage)
+ );
+ }
+
+ static int run(String[] args, Console console, ResponseStorage responseStorage) {
+
+ Cli<String> cli = new Cli<>(console, responseStorage);
+
+ return cli.run(
+ new Args(List.of(args)),
+ new ValidatePmDictionaryYamlCommand(new ToJsonConverter())
+ );
+ }
+}
diff --git a/pmdictionaryvalidation/src/main/java/org/onap/validation/cli/command/validate/OutputFilePathGenerator.java b/pmdictionaryvalidation/src/main/java/org/onap/validation/cli/command/validate/OutputFilePathGenerator.java
new file mode 100644
index 0000000..2ed7285
--- /dev/null
+++ b/pmdictionaryvalidation/src/main/java/org/onap/validation/cli/command/validate/OutputFilePathGenerator.java
@@ -0,0 +1,41 @@
+/*
+ *Copyright 2020 Nokia
+ *
+ * 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 org.onap.validation.cli.command.validate;
+
+import java.nio.file.Path;
+
+public class OutputFilePathGenerator {
+
+ public static final int FILE_NAME_ABBREVIATION_INDEX = 0;
+ public static final String BY_PERIOD_REGEX = "\\.";
+ public static final String POST_FIX = "-validation-results.json";
+
+ public Path responsePathFor(Path filePath) {
+ final Path parent = filePath.getParent();
+ final String fileNameAbbreviation = getFileNameAbbreviation(filePath);
+ return Path.of(parent.toString(), createFileName(fileNameAbbreviation));
+ }
+
+ private String createFileName(String fileNameAbbreviation) {
+ return fileNameAbbreviation + POST_FIX;
+ }
+
+ private String getFileNameAbbreviation(Path filePath) {
+ final Path fileName = filePath.getFileName();
+ return fileName.toString().split(BY_PERIOD_REGEX)[FILE_NAME_ABBREVIATION_INDEX];
+ }
+}
diff --git a/pmdictionaryvalidation/src/main/java/org/onap/validation/cli/command/validate/ResponseModel.java b/pmdictionaryvalidation/src/main/java/org/onap/validation/cli/command/validate/ResponseModel.java
new file mode 100644
index 0000000..033031d
--- /dev/null
+++ b/pmdictionaryvalidation/src/main/java/org/onap/validation/cli/command/validate/ResponseModel.java
@@ -0,0 +1,51 @@
+/*
+ *Copyright 2020 Nokia
+ *
+ * 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 org.onap.validation.cli.command.validate;
+
+import org.onap.validation.yaml.error.YamlDocumentValidationError;
+
+import java.util.Collections;
+import java.util.List;
+
+public class ResponseModel {
+
+ private final String file;
+ private final ResponseStatus status;
+ private final List<YamlDocumentValidationError> errors;
+
+ public ResponseModel(String file, ResponseStatus status, List<YamlDocumentValidationError> errors) {
+ this.file = file;
+ this.status = status;
+ this.errors = errors;
+ }
+
+ public String getFile() {
+ return file;
+ }
+
+ public List<YamlDocumentValidationError> getErrors() {
+ return Collections.unmodifiableList(errors);
+ }
+
+ public ResponseStatus getStatus() {
+ return status;
+ }
+
+ public enum ResponseStatus {
+ PASS, FAILED
+ }
+}
diff --git a/pmdictionaryvalidation/src/main/java/org/onap/validation/cli/command/validate/ResponseStorage.java b/pmdictionaryvalidation/src/main/java/org/onap/validation/cli/command/validate/ResponseStorage.java
new file mode 100644
index 0000000..3daed16
--- /dev/null
+++ b/pmdictionaryvalidation/src/main/java/org/onap/validation/cli/command/validate/ResponseStorage.java
@@ -0,0 +1,30 @@
+/*
+ *Copyright 2020 Nokia
+ *
+ * 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 org.onap.validation.cli.command.validate;
+
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.nio.file.Path;
+
+public class ResponseStorage{
+
+ public <T> void store(Path filePath, T response) throws IOException {
+ try (PrintWriter out = new PrintWriter(filePath.toFile())) {
+ out.println(response);
+ }
+ }
+}
diff --git a/pmdictionaryvalidation/src/main/java/org/onap/validation/cli/command/validate/ToJsonConverter.java b/pmdictionaryvalidation/src/main/java/org/onap/validation/cli/command/validate/ToJsonConverter.java
new file mode 100644
index 0000000..168daf8
--- /dev/null
+++ b/pmdictionaryvalidation/src/main/java/org/onap/validation/cli/command/validate/ToJsonConverter.java
@@ -0,0 +1,28 @@
+/*
+ *Copyright 2020 Nokia
+ *
+ * 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 org.onap.validation.cli.command.validate;
+
+import com.google.gson.Gson;
+import com.google.gson.GsonBuilder;
+
+
+public class ToJsonConverter {
+ public String convert(ResponseModel responseModel) {
+ Gson gson = new GsonBuilder().setPrettyPrinting().create();
+ return gson.toJson(responseModel);
+ }
+}
diff --git a/pmdictionaryvalidation/src/main/java/org/onap/validation/cli/command/validate/ValidatePmDictionaryYamlCommand.java b/pmdictionaryvalidation/src/main/java/org/onap/validation/cli/command/validate/ValidatePmDictionaryYamlCommand.java
new file mode 100644
index 0000000..ceb46d3
--- /dev/null
+++ b/pmdictionaryvalidation/src/main/java/org/onap/validation/cli/command/validate/ValidatePmDictionaryYamlCommand.java
@@ -0,0 +1,92 @@
+/*
+ *Copyright 2020 Nokia
+ *
+ * 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 org.onap.validation.cli.command.validate;
+
+import org.onap.validation.cli.core.Command;
+import org.onap.validation.cli.core.CommandException;
+import org.onap.validation.cli.core.CommandResponse;
+import org.onap.validation.yaml.YamlContentValidator;
+import org.onap.validation.yaml.error.YamlDocumentValidationError;
+import org.onap.validation.yaml.exception.YamlProcessingException;
+import org.onap.validation.yaml.util.Args;
+
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.List;
+
+public class ValidatePmDictionaryYamlCommand implements Command<String> {
+
+ public static final int PATH_TO_FILE_INDEX = 0;
+ private final YamlContentValidator yamlContentValidator = new YamlContentValidator();
+
+ private final ToJsonConverter toJsonConverter;
+ private final OutputFilePathGenerator filePathGenerator = new OutputFilePathGenerator();
+
+ public ValidatePmDictionaryYamlCommand(ToJsonConverter toJsonConverter) {
+ this.toJsonConverter = toJsonConverter;
+ }
+
+ @Override
+ public CommandResponse<String> execute(Args args) throws CommandException {
+ final String pathToFile = resolvePathToFile(args);
+
+ try {
+ return validate(pathToFile);
+ } catch (YamlProcessingException e) {
+ throw new CommandException("Provided yaml file has invalid structure!", e);
+ }
+ }
+
+ @Override
+ public String getName() {
+ return "Validate PM Dictionary yaml";
+ }
+
+ @Override
+ public Path getOutputFilePath(Args args) throws CommandException {
+ final String pathToFile = resolvePathToFile(args);
+ return this.filePathGenerator.responsePathFor(Path.of(pathToFile));
+ }
+
+ private CommandResponse<String> validate(String pathToFile) throws YamlProcessingException {
+ final List<YamlDocumentValidationError> errors = yamlContentValidator.validate(pathToFile);
+ return new CommandResponse<>(
+ toJsonConverter.convert(new ResponseModel(pathToFile, resolveResponseStatus(errors), errors))
+ ,resolveCommandStatus(errors)
+ );
+ }
+
+ private ResponseModel.ResponseStatus resolveResponseStatus(List<YamlDocumentValidationError> errors) {
+ return errors.isEmpty() ? ResponseModel.ResponseStatus.PASS : ResponseModel.ResponseStatus.FAILED;
+ }
+
+ private CommandResponse.CommandStatus resolveCommandStatus(List<YamlDocumentValidationError> errors) {
+ return errors.isEmpty() ? CommandResponse.CommandStatus.PASS : CommandResponse.CommandStatus.FAILED;
+ }
+
+ private String resolvePathToFile(Args args) throws CommandException {
+ try {
+ final String pathToFile = args.getArg(PATH_TO_FILE_INDEX);
+ if (!Files.exists(Path.of(pathToFile))) {
+ throw new CommandException(String.format("File '%s' does not exist!", pathToFile));
+ }
+ return pathToFile;
+ } catch (IllegalArgumentException ex) {
+ throw new CommandException("Command argument is missing: provide a path to file", ex);
+ }
+ }
+}
diff --git a/pmdictionaryvalidation/src/main/java/org/onap/validation/cli/core/Cli.java b/pmdictionaryvalidation/src/main/java/org/onap/validation/cli/core/Cli.java
new file mode 100644
index 0000000..bf2abad
--- /dev/null
+++ b/pmdictionaryvalidation/src/main/java/org/onap/validation/cli/core/Cli.java
@@ -0,0 +1,85 @@
+/*
+ *Copyright 2020 Nokia
+ *
+ * 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 org.onap.validation.cli.core;
+
+import org.onap.validation.cli.command.validate.ResponseStorage;
+import org.onap.validation.cli.core.CommandResponse.CommandStatus;
+import org.onap.validation.yaml.util.Args;
+
+import java.nio.file.Path;
+
+public class Cli<T> {
+
+ public static final int INTERNAL_ERROR_STATUS_CODE = 2;
+ public static final int FAILED_STATUS_CODE = 1;
+ public static final int PASS_STATUS_CODE = 0;
+
+ public static final String APPLICATION_INTERNAL_ERROR_MSG = "\n# Application fails with internal error.";
+ public static final String APPLICATION_EXIT_SUCCESSFULLY_MSG = "\n# Application exits successfully.";
+
+ private final Console console;
+ private final ResponseStorage responseStorage;
+
+ public Cli(Console console, ResponseStorage responseStorage) {
+ this.console = console;
+ this.responseStorage = responseStorage;
+ }
+
+ public int run(Args args, Command<T> command) {
+ try {
+ final CommandResponse<T> commandResponse = processCommand(args, command);
+
+ logResultInfo(commandResponse.getResult());
+ storeResult(args, command, commandResponse.getResult());
+
+ this.console.info(APPLICATION_EXIT_SUCCESSFULLY_MSG);
+
+ return resolveCliStatusCodeFor(commandResponse);
+ } catch (Exception e) {
+ logException(e);
+ return INTERNAL_ERROR_STATUS_CODE;
+ }
+ }
+
+ private int resolveCliStatusCodeFor(CommandResponse<T> commandResponse) {
+ return commandResponse.getCommandStatus() == CommandStatus.PASS ? PASS_STATUS_CODE : FAILED_STATUS_CODE;
+ }
+
+ private void logException(Exception e) {
+ this.console.error("# Command error: ");
+ this.console.error(e);
+ this.console.error(APPLICATION_INTERNAL_ERROR_MSG);
+ }
+
+ private void storeResult(Args args, Command<T> command, T result) throws CommandException, java.io.IOException {
+ final Path pathToFileWithResponse = command.getOutputFilePath(args);
+ this.responseStorage.store(pathToFileWithResponse, result);
+ this.console.info(String.format("%n# Result was stored in a file: '%s'", pathToFileWithResponse));
+ }
+
+ private void logResultInfo(T result) {
+ this.console.info("\n# Operation result:\n");
+ this.console.info(result.toString());
+ }
+
+ private CommandResponse<T> processCommand(Args args, Command<T> command) throws CommandException {
+ this.console.info(String.format("# Executing a '%s' operation ...", command.getName()));
+ final CommandResponse<T> commandResponse = command.execute(args);
+ this.console.info("# ... Done.");
+ return commandResponse;
+ }
+}
diff --git a/pmdictionaryvalidation/src/main/java/org/onap/validation/cli/core/Command.java b/pmdictionaryvalidation/src/main/java/org/onap/validation/cli/core/Command.java
new file mode 100644
index 0000000..1da724f
--- /dev/null
+++ b/pmdictionaryvalidation/src/main/java/org/onap/validation/cli/core/Command.java
@@ -0,0 +1,29 @@
+/*
+ *Copyright 2020 Nokia
+ *
+ * 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 org.onap.validation.cli.core;
+
+import org.onap.validation.yaml.util.Args;
+
+import java.nio.file.Path;
+
+public interface Command<T> {
+ CommandResponse<T> execute(Args args) throws CommandException;
+
+ String getName();
+
+ Path getOutputFilePath(Args args) throws CommandException;
+}
diff --git a/pmdictionaryvalidation/src/main/java/org/onap/validation/cli/core/CommandException.java b/pmdictionaryvalidation/src/main/java/org/onap/validation/cli/core/CommandException.java
new file mode 100644
index 0000000..2c72ff8
--- /dev/null
+++ b/pmdictionaryvalidation/src/main/java/org/onap/validation/cli/core/CommandException.java
@@ -0,0 +1,27 @@
+/*
+ *Copyright 2020 Nokia
+ *
+ * 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 org.onap.validation.cli.core;
+
+public class CommandException extends Exception {
+ public CommandException(String msg) {
+ super(msg);
+ }
+
+ public CommandException(String msg, Exception ex) {
+ super(msg, ex);
+ }
+}
diff --git a/pmdictionaryvalidation/src/main/java/org/onap/validation/cli/core/CommandResponse.java b/pmdictionaryvalidation/src/main/java/org/onap/validation/cli/core/CommandResponse.java
new file mode 100644
index 0000000..e9f70ca
--- /dev/null
+++ b/pmdictionaryvalidation/src/main/java/org/onap/validation/cli/core/CommandResponse.java
@@ -0,0 +1,40 @@
+/*
+ *Copyright 2020 Nokia
+ *
+ * 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 org.onap.validation.cli.core;
+
+public class CommandResponse<T> {
+
+ private final T result;
+ private final CommandStatus commandStatus;
+
+ public CommandResponse(T result, CommandStatus commandStatus) {
+ this.result = result;
+ this.commandStatus = commandStatus;
+ }
+
+ public T getResult() {
+ return result;
+ }
+
+ public CommandStatus getCommandStatus() {
+ return commandStatus;
+ }
+
+ public enum CommandStatus {
+ PASS, FAILED
+ }
+}
diff --git a/pmdictionaryvalidation/src/main/java/org/onap/validation/cli/core/Console.java b/pmdictionaryvalidation/src/main/java/org/onap/validation/cli/core/Console.java
new file mode 100644
index 0000000..4c20437
--- /dev/null
+++ b/pmdictionaryvalidation/src/main/java/org/onap/validation/cli/core/Console.java
@@ -0,0 +1,41 @@
+/*
+ *Copyright 2020 Nokia
+ *
+ * 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 org.onap.validation.cli.core;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class Console {
+
+ public static final Logger logger = LoggerFactory.getLogger(Console.class);
+
+ public void info(String msg) {
+ System.out.println(msg);
+ logger.info(msg);
+ }
+
+ public void error(Exception ex) {
+ System.err.println(ex.getMessage() + ", more information in log file.");
+ logger.error("Internal error", ex);
+ }
+
+ public void error(String msg) {
+ System.err.println(msg);
+ logger.error(msg);
+ }
+
+}
diff --git a/pmdictionaryvalidation/src/main/java/org/onap/validation/yaml/util/Args.java b/pmdictionaryvalidation/src/main/java/org/onap/validation/yaml/util/Args.java
new file mode 100644
index 0000000..9ae44c8
--- /dev/null
+++ b/pmdictionaryvalidation/src/main/java/org/onap/validation/yaml/util/Args.java
@@ -0,0 +1,36 @@
+/*
+ *Copyright 2020 Nokia
+ *
+ * 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 org.onap.validation.yaml.util;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class Args {
+
+ private final List<String> data;
+
+ public Args(List<String> data) {
+ this.data = new ArrayList<>(data);
+ }
+
+ public String getArg(int index) {
+ if (this.data.size() <= index) {
+ throw new IllegalArgumentException(String.format("Argument with index %d is not available!", index));
+ }
+ return this.data.get(index);
+ }
+}