v8r

v8r checks the validity of JSON/YAML files if they have a matching schema defined on schemastore.org

v8r documentation

• Version in MegaLinter: 0.13.0
• Visit Official Web Site
• See Index of problems detected by v8r

Configuration in MegaLinter

• Enable v8r by adding YAML_V8R in ENABLE_LINTERS variable
• Disable v8r by adding YAML_V8R in DISABLE_LINTERS variable

Variable	Description	Default value
YAML_V8R_ARGUMENTS	User custom arguments to add in linter CLI call Ex: -s --foo "bar"
YAML_V8R_FILTER_REGEX_INCLUDE	Custom regex including filter Ex: (src\|lib)	Include every file
YAML_V8R_FILTER_REGEX_EXCLUDE	Custom regex excluding filter Ex: (test\|examples)	Exclude no file
YAML_V8R_CLI_LINT_MODE	Override default CLI lint mode - file: Calls the linter for each file - list_of_files: Call the linter with the list of files as argument - project: Call the linter from the root of the project	list_of_files
YAML_V8R_FILE_EXTENSIONS	Allowed file extensions. "*" matches any extension, "" matches empty extension. Empty list excludes all files Ex: [".py", ""]	[".yml", ".yaml"]
YAML_V8R_FILE_NAMES_REGEX	File name regex filters. Regular expression list for filtering files by their base names using regex full match. Empty list includes all files Ex: ["Dockerfile(-.+)?", "Jenkinsfile"]	Include every file
YAML_V8R_PRE_COMMANDS	List of bash commands to run before the linter	None
YAML_V8R_POST_COMMANDS	List of bash commands to run after the linter	None
YAML_V8R_DISABLE_ERRORS	Run linter but consider errors as warnings	false
YAML_V8R_DISABLE_ERRORS_IF_LESS_THAN	Maximum number of errors allowed	0

IDE Integration

Use v8r in your favorite IDE to catch errors before MegaLinter !

	IDE	Extension Name	Install
	Eclipse	native support	Visit Web Site
	IDEA	native support	Visit Web Site
	vim	vison	Visit Web Site
	Visual Studio Code	native support	Visit Web Site

MegaLinter Flavours

This linter is available in the following flavours

	Flavor	Description	Embedded linters	Info
	all	Default MegaLinter Flavor	101
	ci_light	Optimized for CI items (Dockerfile, Jenkinsfile, JSON/YAML schemas,XML	18
	documentation	MegaLinter for documentation projects	42
	dotnet	Optimized for C, C++, C# or VB based projects	50
	go	Optimized for GO based projects	44
	java	Optimized for JAVA based projects	44
	javascript	Optimized for JAVASCRIPT or TYPESCRIPT based projects	51
	php	Optimized for PHP based projects	46
	python	Optimized for PYTHON based projects	50
	ruby	Optimized for RUBY based projects	43
	rust	Optimized for RUST based projects	43
	salesforce	Optimized for Salesforce based projects	45
	swift	Optimized for SWIFT based projects	43
	terraform	Optimized for TERRAFORM based projects	48

Behind the scenes

How are identified applicable files

• File extensions: .yml, .yaml

How the linting is performed

• v8r is called once with the list of files as arguments

Example calls

v8r --ignore-errors myfile.yml

v8r --ignore-errors myfile.yaml

Help content

ℹ No config file found
v8r <patterns..>

Validate local json/yaml files against schema(s)

Positionals:
  patterns  One or more filenames or glob patterns describing local file or file
            s to validate

Options:
      --help           Show help                                       [boolean]
      --version        Show version number                             [boolean]
  -v, --verbose        Run with verbose logging. Can be stacked e.g: -vv -vvv
                                                                         [count]
  -s, --schema         Local path or URL of a schema to validate against. If not
                        supplied, we will attempt to find an appropriate schema
                       on schemastore.org using the filename. If passed with glo
                       b pattern(s) matching multiple files, all matching files
                       will be validated against this schema            [string]
  -c, --catalogs       Local path or URL of custom catalogs to use prior to sche
                       mastore.org                                       [array]
      --ignore-errors  Exit with code 0 even if an error was encountered. Passin
                       g this flag means a non-zero exit code is only issued if
                       validation could be completed successfully and one or mor
                       e files were invalid           [boolean] [default: false]
      --cache-ttl      Remove cached HTTP responses older than <cache-ttl> secon
                       ds old. Passing 0 clears and disables cache completely
                                                         [number] [default: 600]
      --format         Output format for validation results
                            [string] [choices: "text", "json"] [default: "text"]

Examples:
  v8r file.json                 Validate a single file
  v8r file1.json file2.json     Validate multiple files
  v8r 'dir/*.yml' 'dir/*.yaml'  Specify files to validate with glob patterns

Installation on mega-linter Docker image

• NPM packages (node.js):
  • v8r