private void validate()

in PluginsAndFeatures/azure-toolkit-for-eclipse/com.microsoft.azuretools.container/src/main/java/com/microsoft/azuretools/container/ui/PublishWebAppOnLinuxDialog.java [347:440]
84 lines of code
29 McCabe index (conditional complexity)

    private void validate() throws InvalidFormDataException {
        if (!AuthMethodManager.getInstance().isSignedIn()) {
            throw new InvalidFormDataException(NEED_SIGN_IN);
        }
        // docker file
        if (Utils.isEmptyString(model.getDockerFilePath())) {
            throw new InvalidFormDataException(INVALID_DOCKER_FILE);
        }
        File dockerFile = Paths.get(model.getDockerFilePath()).toFile();
        if (!dockerFile.exists() || !dockerFile.isFile()) {
            throw new InvalidFormDataException(INVALID_DOCKER_FILE);
        }
        // acr
        PrivateRegistryImageSetting setting = model.getPrivateRegistryImageSetting();
        if (Utils.isEmptyString(setting.getServerUrl()) || !setting.getServerUrl().matches(DOMAIN_NAME_REGEX)) {
            throw new InvalidFormDataException(MISSING_SERVER_URL);
        }
        if (Utils.isEmptyString(setting.getUsername())) {
            throw new InvalidFormDataException(MISSING_USERNAME);
        }
        if (Utils.isEmptyString(setting.getPassword())) {
            throw new InvalidFormDataException(MISSING_PASSWORD);
        }
        String imageTag = setting.getImageTagWithServerUrl();
        if (Utils.isEmptyString(imageTag)) {
            throw new InvalidFormDataException(MISSING_IMAGE_WITH_TAG);
        }
        if (imageTag.endsWith(":")) {
            throw new InvalidFormDataException(CANNOT_END_WITH_COLON);
        }
        final String[] repoAndTag = imageTag.split(":");

        // check repository first
        if (repoAndTag[0].length() < 1 || repoAndTag[0].length() > REPO_LENGTH) {
            throw new InvalidFormDataException(REPO_LENGTH_INVALID);
        }
        if (repoAndTag[0].endsWith("/")) {
            throw new InvalidFormDataException(CANNOT_END_WITH_SLASH);
        }
        final String[] repoComponents = repoAndTag[0].split("/");
        for (String component : repoComponents) {
            if (!component.matches(REPO_COMPONENTS_REGEX)) {
                throw new InvalidFormDataException(
                        String.format(REPO_COMPONENT_INVALID, component, REPO_COMPONENTS_REGEX));
            }
        }
        // check when contains tag
        if (repoAndTag.length == 2) {
            if (repoAndTag[1].length() > TAG_LENGTH) {
                throw new InvalidFormDataException(TAG_LENGTH_INVALID);
            }
            if (!repoAndTag[1].matches(TAG_REGEX)) {
                throw new InvalidFormDataException(String.format(TAG_INVALID, repoAndTag[1], TAG_REGEX));
            }
        }
        if (repoAndTag.length > 2) {
            throw new InvalidFormDataException(INVALID_IMAGE_WITH_TAG);
        }
        // web app
        if (model.isCreatingNewWebAppOnLinux()) {
            if (Utils.isEmptyString(model.getWebAppName())) {
                throw new InvalidFormDataException(MISSING_WEB_APP);
            }
            if (Utils.isEmptyString(model.getSubscriptionId())) {
                throw new InvalidFormDataException(MISSING_SUBSCRIPTION);
            }
            if (Utils.isEmptyString(model.getResourceGroupName())) {
                throw new InvalidFormDataException(MISSING_RESOURCE_GROUP);
            }

            if (model.isCreatingNewAppServicePlan()) {
                if (Utils.isEmptyString(model.getAppServicePlanName())) {
                    throw new InvalidFormDataException(MISSING_APP_SERVICE_PLAN);
                }
            } else {
                if (Utils.isEmptyString(model.getAppServicePlanId())) {
                    throw new InvalidFormDataException(MISSING_APP_SERVICE_PLAN);
                }
            }

        } else {
            if (Utils.isEmptyString(model.getWebAppId())) {
                throw new InvalidFormDataException(MISSING_WEB_APP);
            }
        }

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