arm-ttk

arm-ttk documentation

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See How to configure arm-ttk rules
- If custom .arm-ttk.psd1 config file is not found, .arm-ttk.psd1 will be used

Configuration in Mega-Linter

Enable arm-ttk by adding ARM_ARM_TTK in ENABLE_LINTERS variable
Disable arm-ttk by adding ARM_ARM_TTK in DISABLE_LINTERS variable

Variable	Description	Default value
ARM_ARM_TTK_ARGUMENTS	User custom arguments to add in linter CLI call Ex: `-s --foo "bar"`
ARM_ARM_TTK_FILTER_REGEX_INCLUDE	Custom regex including filter Ex: `(src\\|lib)`	Include every file
ARM_ARM_TTK_FILTER_REGEX_EXCLUDE	Custom regex excluding filter Ex: `(test\\|examples)`	Exclude no file
ARM_ARM_TTK_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	`{linter.cli_lint_mode}`
ARM_ARM_TTK_FILE_EXTENSIONS	Allowed file extensions. `"*"` matches any extension, `""` matches empty extension. Empty list excludes all files Ex: `[".py", ""]`	`[".json"]`
ARM_ARM_TTK_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
ARM_ARM_TTK_PRE_COMMANDS	List of bash commands to run before the linter	None
ARM_ARM_TTK_POST_COMMANDS	List of bash commands to run after the linter	None
ARM_ARM_TTK_CONFIG_FILE	arm-ttk configuration file name Use `LINTER_DEFAULT` to let the linter find it	`.arm-ttk.psd1`
ARM_ARM_TTK_RULES_PATH	Path where to find linter configuration file	Workspace folder, then Mega-Linter default rules
ARM_ARM_TTK_DISABLE_ERRORS	Run linter but consider errors as warnings	`false`
ARM_ARM_TTK_DISABLE_ERRORS_IF_LESS_THAN	Maximum number of errors allowed	`0`

IDE Integration

Use arm-ttk in your favorite IDE to catch errors before Mega-Linter !

	IDE	Extension Name	Install
	Visual Studio Code	ARMTTKExtension

Mega-Linter Flavours

This linter is available in the following flavours

	Flavor	Description	Embedded linters	Info
	all	Default Mega-Linter Flavor	94
	dotnet	Optimized for C, C++, C# or VB based projects	47

Behind the scenes

How are identified applicable files

File extensions: .json
Detected file content (regex): schema\.management\.azure\.com

How the linting is performed

arm-ttk is called one time by identified file

Example calls

pwsh -NoProfile -NoLogo -Command "
    Import-Module /usr/bin/arm-ttk;
    Test-AzTemplate -TemplatePath myfile.json;
    if (${Error}.Count) {exit 1}"
    "

"pwsh -NoProfile -NoLogo -Command "
    Import-Module /usr/bin/arm-ttk;
    ${config} = $(Import-PowerShellDataFile -Path ".arm-ttk.psd1");
    Test-AzTemplate @config -TemplatePath myfile.json;
    if (${Error}.Count) {exit 1}
    "

Help content

[91mTest-AzTemplate:
[96mLine |
[96m   2 | [0m $TAZ_V = (Test-AzTemplate [96m-help[0m);
[96m     | [91m                           ~~~~~
[91m[96m     | [91mA parameter cannot be found that matches parameter name 'help'.[0m

Installation on mega-linter Docker image

Dockerfile commands :

ARG ARM_TTK_NAME='master.zip'
ARG ARM_TTK_URI='https://github.com/Azure/arm-ttk/archive/master.zip'
ARG ARM_TTK_DIRECTORY='/opt/microsoft'
ENV ARM_TTK_PSD1="${ARM_TTK_DIRECTORY}/arm-ttk-master/arm-ttk/arm-ttk.psd1"
RUN curl --retry 5 --retry-delay 5 -sLO "${ARM_TTK_URI}" \
    && unzip "${ARM_TTK_NAME}" -d "${ARM_TTK_DIRECTORY}" \
    && rm "${ARM_TTK_NAME}" \
    && ln -sTf "${ARM_TTK_PSD1}" /usr/bin/arm-ttk \
    && chmod a+x /usr/bin/arm-ttk

Example success log

Results of arm-ttk linter (version 0.0.0)
See documentation on https://megalinter.github.io/descriptors/arm_arm_ttk/
-----------------------------------------------

[SUCCESS] .automation/test/arm/arm_good_1.json
                                                                                                                                                                                                                                                                                                                                                                                                                    Validating arm\arm_good_1.json  deploymentTemplate
        [+] adminUsername Should Not Be A Literal (70 ms)

        [+] apiVersions Should Be Recent (67 ms)
        [+] artifacts parameter (12 ms)
        [+] DependsOn Best Practices (8 ms)
        [+] Deployment Resources Must Not Be Debug (8 ms)
        [+] DeploymentTemplate Must Not Contain Hardcoded Uri (17 ms)
        [+] DeploymentTemplate Schema Is Correct (4 ms)
        [+] Dynamic Variable References Should Not Use Concat (69 ms)
        [+] IDs Should Be Derived From ResourceIDs (33 ms)
        [+] Location Should Not Be Hardcoded (30 ms)
        [+] ManagedIdentityExtension must not be used (2 ms)
        [+] Min And Max Value Are Numbers (6 ms)
        [+] Outputs Must Not Contain Secrets (9 ms)
        [+] Parameters Must Be Referenced (9 ms)
        [+] Parameters Property Must Exist (3 ms)
        [+] providers apiVersions Is Not Permitted (2 ms)
        [+] ResourceIds should not contain (9 ms)
        [+] Resources Should Have Location (2 ms)
        [+] Secure String Parameters Cannot Have Default (3 ms)
        [+] Template Should Not Contain Blanks (6 ms)
        [+] Variables Must Be Referenced (28 ms)
        [+] Virtual Machines Should Not Be Preview (16 ms)
        [+] VM Images Should Use Latest Version (1 ms)
        [+] VM Size Should Be A Parameter (15 ms)

Example error log

Results of arm-ttk linter (version 0.0.0)
See documentation on https://megalinter.github.io/descriptors/arm_arm_ttk/
-----------------------------------------------

[ERROR] .automation/test/arm/arm_bad_1.json
                                                                                                                                                                                                                                                                                                                                                                                                                    Validating arm\arm_bad_1.json  deploymentTemplate
        [+] adminUsername Should Not Be A Literal (69 ms)

        [+] apiVersions Should Be Recent (97 ms)
        [+] artifacts parameter (11 ms)
        [+] DependsOn Best Practices (6 ms)
        [+] Deployment Resources Must Not Be Debug (7 ms)
        [+] DeploymentTemplate Must Not Contain Hardcoded Uri (17 ms)
        [+] DeploymentTemplate Schema Is Correct (4 ms)
        [+] Dynamic Variable References Should Not Use Concat (3 ms)
        [+] IDs Should Be Derived From ResourceIDs (18 ms)
        [+] Location Should Not Be Hardcoded (27 ms)
        [+] ManagedIdentityExtension must not be used (3 ms)
        [+] Min And Max Value Are Numbers (7 ms)
        [+] Outputs Must Not Contain Secrets (10 ms)
        [+] Parameters Must Be Referenced (10 ms)
        [+] Parameters Property Must Exist (3 ms)
        [+] providers apiVersions Is Not Permitted (2 ms)
        [+] ResourceIds should not contain (10 ms)
        [+] Resources Should Have Location (2 ms)
        [+] Secure String Parameters Cannot Have Default (3 ms)
        [-] Template Should Not Contain Blanks (21 ms) 
    ::error::        Empty property:  [] found on line: 28 Index:1331
    ::error::        Empty property:  "" found on line: 3 Index:121

        [-] Variables Must Be Referenced (80 ms) 
    ::error::        Unreferenced variable: Network.Location
    ::error::        Unreferenced variable: Test.Blank.Variable

        [+] Virtual Machines Should Not Be Preview (18 ms)
        [+] VM Images Should Use Latest Version (1 ms)
        [+] VM Size Should Be A Parameter (13 ms)