private void validate()

in PluginsAndFeatures/azure-toolkit-for-eclipse/com.microsoft.azuretools.container/src/main/java/com/microsoft/azuretools/container/ui/DockerRunDialog.java [251:309]
51 lines of code
19 McCabe index (conditional complexity)

    private void validate() throws InvalidFormDataException {
        if (dataModel == null) {
            throw new InvalidFormDataException(MISSING_MODEL);
        }
        // docker file
        if (Utils.isEmptyString(dataModel.getDockerFilePath())) {
            throw new InvalidFormDataException(INVALID_DOCKER_FILE);
        }
        File dockerFile = Paths.get(dataModel.getDockerFilePath()).toFile();
        if (!dockerFile.exists() || !dockerFile.isFile()) {
            throw new InvalidFormDataException(INVALID_DOCKER_FILE);
        }
        // cert path
        if (dataModel.isTlsEnabled()) {
            if (Utils.isEmptyString(dataModel.getDockerCertPath())) {
                throw new InvalidFormDataException(INVALID_CERT_PATH);
            }
            File certPath = Paths.get(dataModel.getDockerCertPath()).toFile();
            if (!certPath.exists() || !certPath.isDirectory()) {
                throw new InvalidFormDataException(INVALID_CERT_PATH);
            }
        }

        String imageName = dataModel.getImageName();
        String tagName = dataModel.getTagName();
        if (Utils.isEmptyString(imageName) || Utils.isEmptyString(tagName)) {
            throw new InvalidFormDataException(MISSING_IMAGE_WITH_TAG);
        }

        // check repository first
        if (imageName.length() < 1 || imageName.length() > REPO_LENGTH) {
            throw new InvalidFormDataException(REPO_LENGTH_INVALID);
        }
        if (imageName.endsWith("/")) {
            throw new InvalidFormDataException(CANNOT_END_WITH_SLASH);
        }
        final String[] repoComponents = imageName.split("/");
        for (String component : repoComponents) {
            if (!component.matches(REPO_COMPONENTS_REGEX)) {
                throw new InvalidFormDataException(
                        String.format(REPO_COMPONENT_INVALID, component, REPO_COMPONENTS_REGEX));
            }
        }
        // check tag
        if (tagName.length() > TAG_LENGTH) {
            throw new InvalidFormDataException(TAG_LENGTH_INVALID);
        }
        if (!tagName.matches(TAG_REGEX)) {
            throw new InvalidFormDataException(String.format(TAG_INVALID, tagName, TAG_REGEX));
        }

        // target package
        if (Utils.isEmptyString(dataModel.getTargetName())) {
            throw new InvalidFormDataException(MISSING_ARTIFACT);
        }
        if (!dataModel.getTargetName().matches(ARTIFACT_NAME_REGEX)) {
            throw new InvalidFormDataException(String.format(INVALID_ARTIFACT_FILE, dataModel.getTargetName()));
        }
    }