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<main>
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<h1 id="command-handler-developer-guide"><a class="header" href="#command-handler-developer-guide">Command Handler Developer Guide</a></h1>
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<p><strong>Target Audience</strong>: Developers working on the provisioning CLI
|
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<strong>Last Updated</strong>: 2025-09-30
|
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<strong>Related</strong>: <a href="../architecture/adr/ADR-006-provisioning-cli-refactoring.html">ADR-006 CLI Refactoring</a></p>
|
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<h2 id="overview"><a class="header" href="#overview">Overview</a></h2>
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<p>The provisioning CLI uses a <strong>modular, domain-driven architecture</strong> that separates concerns into focused command handlers. This guide shows you how to work with this architecture.</p>
|
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<h3 id="key-architecture-principles"><a class="header" href="#key-architecture-principles">Key Architecture Principles</a></h3>
|
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<ol>
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<li><strong>Separation of Concerns</strong>: Routing, flag parsing, and business logic are separated</li>
|
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<li><strong>Domain-Driven Design</strong>: Commands organized by domain (infrastructure, orchestration, etc.)</li>
|
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<li><strong>DRY (Don’t Repeat Yourself)</strong>: Centralized flag handling eliminates code duplication</li>
|
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<li><strong>Single Responsibility</strong>: Each module has one clear purpose</li>
|
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<li><strong>Open/Closed Principle</strong>: Easy to extend, no need to modify core routing</li>
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</ol>
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<h3 id="architecture-components"><a class="header" href="#architecture-components">Architecture Components</a></h3>
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<pre><code>provisioning/core/nulib/
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├── provisioning (211 lines) - Main entry point
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├── main_provisioning/
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│ ├── flags.nu (139 lines) - Centralized flag handling
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│ ├── dispatcher.nu (264 lines) - Command routing
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│ ├── help_system.nu - Categorized help system
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│ └── commands/ - Domain-focused handlers
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│ ├── infrastructure.nu (117 lines) - Server, taskserv, cluster, infra
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│ ├── orchestration.nu (64 lines) - Workflow, batch, orchestrator
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│ ├── development.nu (72 lines) - Module, layer, version, pack
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│ ├── workspace.nu (56 lines) - Workspace, template
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│ ├── generation.nu (78 lines) - Generate commands
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│ ├── utilities.nu (157 lines) - SSH, SOPS, cache, providers
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│ └── configuration.nu (316 lines) - Env, show, init, validate
|
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</code></pre>
|
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<h2 id="adding-new-commands"><a class="header" href="#adding-new-commands">Adding New Commands</a></h2>
|
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<h3 id="step-1-choose-the-right-domain-handler"><a class="header" href="#step-1-choose-the-right-domain-handler">Step 1: Choose the Right Domain Handler</a></h3>
|
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<p>Commands are organized by domain. Choose the appropriate handler:</p>
|
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<div class="table-wrapper"><table><thead><tr><th>Domain</th><th>Handler</th><th>Responsibility</th></tr></thead><tbody>
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<tr><td><code>infrastructure.nu</code></td><td>Server/taskserv/cluster/infra lifecycle</td><td></td></tr>
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<tr><td><code>orchestration.nu</code></td><td>Workflow/batch operations, orchestrator control</td><td></td></tr>
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<tr><td><code>development.nu</code></td><td>Module discovery, layers, versions, packaging</td><td></td></tr>
|
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<tr><td><code>workspace.nu</code></td><td>Workspace and template management</td><td></td></tr>
|
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<tr><td><code>configuration.nu</code></td><td>Environment, settings, initialization</td><td></td></tr>
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<tr><td><code>utilities.nu</code></td><td>SSH, SOPS, cache, providers, utilities</td><td></td></tr>
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<tr><td><code>generation.nu</code></td><td>Generate commands (server, taskserv, etc.)</td><td></td></tr>
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</tbody></table>
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</div>
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<h3 id="step-2-add-command-to-handler"><a class="header" href="#step-2-add-command-to-handler">Step 2: Add Command to Handler</a></h3>
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<p><strong>Example: Adding a new server command <code>server status</code></strong></p>
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<p>Edit <code>provisioning/core/nulib/main_provisioning/commands/infrastructure.nu</code>:</p>
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<pre><code class="language-nushell"># Add to the handle_infrastructure_command match statement
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export def handle_infrastructure_command [
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command: string
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ops: string
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flags: record
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] {
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set_debug_env $flags
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match $command {
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"server" => { handle_server $ops $flags }
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"taskserv" | "task" => { handle_taskserv $ops $flags }
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"cluster" => { handle_cluster $ops $flags }
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"infra" | "infras" => { handle_infra $ops $flags }
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_ => {
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print $"❌ Unknown infrastructure command: ($command)"
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print ""
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print "Available infrastructure commands:"
|
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print " server - Server operations (create, delete, list, ssh, status)" # Updated
|
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print " taskserv - Task service management"
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print " cluster - Cluster operations"
|
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print " infra - Infrastructure management"
|
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print ""
|
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print "Use 'provisioning help infrastructure' for more details"
|
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exit 1
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}
|
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}
|
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}
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|
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# Add the new command handler
|
|||
|
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def handle_server [ops: string, flags: record] {
|
|||
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let args = build_module_args $flags $ops
|
|||
|
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run_module $args "server" --exec
|
|||
|
|
}
|
|||
|
|
</code></pre>
|
|||
|
|
<p><strong>That’s it!</strong> The command is now available as <code>provisioning server status</code>.</p>
|
|||
|
|
<h3 id="step-3-add-shortcuts-optional"><a class="header" href="#step-3-add-shortcuts-optional">Step 3: Add Shortcuts (Optional)</a></h3>
|
|||
|
|
<p>If you want shortcuts like <code>provisioning s status</code>:</p>
|
|||
|
|
<p>Edit <code>provisioning/core/nulib/main_provisioning/dispatcher.nu</code>:</p>
|
|||
|
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<pre><code class="language-nushell">export def get_command_registry []: nothing -> record {
|
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|
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{
|
|||
|
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# Infrastructure commands
|
|||
|
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"s" => "infrastructure server" # Already exists
|
|||
|
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"server" => "infrastructure server" # Already exists
|
|||
|
|
|
|||
|
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# Your new shortcut (if needed)
|
|||
|
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# Example: "srv-status" => "infrastructure server status"
|
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|
|
|
|||
|
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# ... rest of registry
|
|||
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}
|
|||
|
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}
|
|||
|
|
</code></pre>
|
|||
|
|
<p><strong>Note</strong>: Most shortcuts are already configured. You only need to add new shortcuts if you’re creating completely new command categories.</p>
|
|||
|
|
<h2 id="modifying-existing-handlers"><a class="header" href="#modifying-existing-handlers">Modifying Existing Handlers</a></h2>
|
|||
|
|
<h3 id="example-enhancing-the-taskserv-command"><a class="header" href="#example-enhancing-the-taskserv-command">Example: Enhancing the <code>taskserv</code> Command</a></h3>
|
|||
|
|
<p>Let’s say you want to add better error handling to the taskserv command:</p>
|
|||
|
|
<p><strong>Before:</strong></p>
|
|||
|
|
<pre><code class="language-nushell">def handle_taskserv [ops: string, flags: record] {
|
|||
|
|
let args = build_module_args $flags $ops
|
|||
|
|
run_module $args "taskserv" --exec
|
|||
|
|
}
|
|||
|
|
</code></pre>
|
|||
|
|
<p><strong>After:</strong></p>
|
|||
|
|
<pre><code class="language-nushell">def handle_taskserv [ops: string, flags: record] {
|
|||
|
|
# Validate taskserv name if provided
|
|||
|
|
let first_arg = ($ops | split row " " | get -o 0)
|
|||
|
|
if ($first_arg | is-not-empty) and $first_arg not-in ["create", "delete", "list", "generate", "check-updates", "help"] {
|
|||
|
|
# Check if taskserv exists
|
|||
|
|
let available_taskservs = (^$env.PROVISIONING_NAME module discover taskservs | from json)
|
|||
|
|
if $first_arg not-in $available_taskservs {
|
|||
|
|
print $"❌ Unknown taskserv: ($first_arg)"
|
|||
|
|
print ""
|
|||
|
|
print "Available taskservs:"
|
|||
|
|
$available_taskservs | each { |ts| print $" • ($ts)" }
|
|||
|
|
exit 1
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
let args = build_module_args $flags $ops
|
|||
|
|
run_module $args "taskserv" --exec
|
|||
|
|
}
|
|||
|
|
</code></pre>
|
|||
|
|
<h2 id="working-with-flags"><a class="header" href="#working-with-flags">Working with Flags</a></h2>
|
|||
|
|
<h3 id="using-centralized-flag-handling"><a class="header" href="#using-centralized-flag-handling">Using Centralized Flag Handling</a></h3>
|
|||
|
|
<p>The <code>flags.nu</code> module provides centralized flag handling:</p>
|
|||
|
|
<pre><code class="language-nushell"># Parse all flags into normalized record
|
|||
|
|
let parsed_flags = (parse_common_flags {
|
|||
|
|
version: $version, v: $v, info: $info,
|
|||
|
|
debug: $debug, check: $check, yes: $yes,
|
|||
|
|
wait: $wait, infra: $infra, # ... etc
|
|||
|
|
})
|
|||
|
|
|
|||
|
|
# Build argument string for module execution
|
|||
|
|
let args = build_module_args $parsed_flags $ops
|
|||
|
|
|
|||
|
|
# Set environment variables based on flags
|
|||
|
|
set_debug_env $parsed_flags
|
|||
|
|
</code></pre>
|
|||
|
|
<h3 id="available-flag-parsing"><a class="header" href="#available-flag-parsing">Available Flag Parsing</a></h3>
|
|||
|
|
<p>The <code>parse_common_flags</code> function normalizes these flags:</p>
|
|||
|
|
<div class="table-wrapper"><table><thead><tr><th>Flag Record Field</th><th>Description</th></tr></thead><tbody>
|
|||
|
|
<tr><td><code>show_version</code></td><td>Version display (<code>--version</code>, <code>-v</code>)</td></tr>
|
|||
|
|
<tr><td><code>show_info</code></td><td>Info display (<code>--info</code>, <code>-i</code>)</td></tr>
|
|||
|
|
<tr><td><code>show_about</code></td><td>About display (<code>--about</code>, <code>-a</code>)</td></tr>
|
|||
|
|
<tr><td><code>debug_mode</code></td><td>Debug mode (<code>--debug</code>, <code>-x</code>)</td></tr>
|
|||
|
|
<tr><td><code>check_mode</code></td><td>Check mode (<code>--check</code>, <code>-c</code>)</td></tr>
|
|||
|
|
<tr><td><code>auto_confirm</code></td><td>Auto-confirm (<code>--yes</code>, <code>-y</code>)</td></tr>
|
|||
|
|
<tr><td><code>wait</code></td><td>Wait for completion (<code>--wait</code>, <code>-w</code>)</td></tr>
|
|||
|
|
<tr><td><code>keep_storage</code></td><td>Keep storage (<code>--keepstorage</code>)</td></tr>
|
|||
|
|
<tr><td><code>infra</code></td><td>Infrastructure name (<code>--infra</code>)</td></tr>
|
|||
|
|
<tr><td><code>outfile</code></td><td>Output file (<code>--outfile</code>)</td></tr>
|
|||
|
|
<tr><td><code>output_format</code></td><td>Output format (<code>--out</code>)</td></tr>
|
|||
|
|
<tr><td><code>template</code></td><td>Template name (<code>--template</code>)</td></tr>
|
|||
|
|
<tr><td><code>select</code></td><td>Selection (<code>--select</code>)</td></tr>
|
|||
|
|
<tr><td><code>settings</code></td><td>Settings file (<code>--settings</code>)</td></tr>
|
|||
|
|
<tr><td><code>new_infra</code></td><td>New infra name (<code>--new</code>)</td></tr>
|
|||
|
|
</tbody></table>
|
|||
|
|
</div>
|
|||
|
|
<h3 id="adding-new-flags"><a class="header" href="#adding-new-flags">Adding New Flags</a></h3>
|
|||
|
|
<p>If you need to add a new flag:</p>
|
|||
|
|
<ol>
|
|||
|
|
<li><strong>Update main <code>provisioning</code> file</strong> to accept the flag</li>
|
|||
|
|
<li><strong>Update <code>flags.nu:parse_common_flags</code></strong> to normalize it</li>
|
|||
|
|
<li><strong>Update <code>flags.nu:build_module_args</code></strong> to pass it to modules</li>
|
|||
|
|
</ol>
|
|||
|
|
<p><strong>Example: Adding <code>--timeout</code> flag</strong></p>
|
|||
|
|
<pre><code class="language-nushell"># 1. In provisioning main file (parameter list)
|
|||
|
|
def main [
|
|||
|
|
# ... existing parameters
|
|||
|
|
--timeout: int = 300 # Timeout in seconds
|
|||
|
|
# ... rest of parameters
|
|||
|
|
] {
|
|||
|
|
# ... existing code
|
|||
|
|
let parsed_flags = (parse_common_flags {
|
|||
|
|
# ... existing flags
|
|||
|
|
timeout: $timeout
|
|||
|
|
})
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
# 2. In flags.nu:parse_common_flags
|
|||
|
|
export def parse_common_flags [flags: record]: nothing -> record {
|
|||
|
|
{
|
|||
|
|
# ... existing normalizations
|
|||
|
|
timeout: ($flags.timeout? | default 300)
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
# 3. In flags.nu:build_module_args
|
|||
|
|
export def build_module_args [flags: record, extra: string = ""]: nothing -> string {
|
|||
|
|
# ... existing code
|
|||
|
|
let str_timeout = if ($flags.timeout != 300) { $"--timeout ($flags.timeout) " } else { "" }
|
|||
|
|
# ... rest of function
|
|||
|
|
$"($extra) ($use_check)($use_yes)($use_wait)($str_timeout)..."
|
|||
|
|
}
|
|||
|
|
</code></pre>
|
|||
|
|
<h2 id="adding-new-shortcuts"><a class="header" href="#adding-new-shortcuts">Adding New Shortcuts</a></h2>
|
|||
|
|
<h3 id="shortcut-naming-conventions"><a class="header" href="#shortcut-naming-conventions">Shortcut Naming Conventions</a></h3>
|
|||
|
|
<ul>
|
|||
|
|
<li><strong>1-2 letters</strong>: Ultra-short for common commands (<code>s</code> for server, <code>ws</code> for workspace)</li>
|
|||
|
|
<li><strong>3-4 letters</strong>: Abbreviations (<code>orch</code> for orchestrator, <code>tmpl</code> for template)</li>
|
|||
|
|
<li><strong>Aliases</strong>: Alternative names (<code>task</code> for taskserv, <code>flow</code> for workflow)</li>
|
|||
|
|
</ul>
|
|||
|
|
<h3 id="example-adding-a-new-shortcut"><a class="header" href="#example-adding-a-new-shortcut">Example: Adding a New Shortcut</a></h3>
|
|||
|
|
<p>Edit <code>provisioning/core/nulib/main_provisioning/dispatcher.nu</code>:</p>
|
|||
|
|
<pre><code class="language-nushell">export def get_command_registry []: nothing -> record {
|
|||
|
|
{
|
|||
|
|
# ... existing shortcuts
|
|||
|
|
|
|||
|
|
# Add your new shortcut
|
|||
|
|
"db" => "infrastructure database" # New: db command
|
|||
|
|
"database" => "infrastructure database" # Full name
|
|||
|
|
|
|||
|
|
# ... rest of registry
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
</code></pre>
|
|||
|
|
<p><strong>Important</strong>: After adding a shortcut, update the help system in <code>help_system.nu</code> to document it.</p>
|
|||
|
|
<h2 id="testing-your-changes"><a class="header" href="#testing-your-changes">Testing Your Changes</a></h2>
|
|||
|
|
<h3 id="running-the-test-suite"><a class="header" href="#running-the-test-suite">Running the Test Suite</a></h3>
|
|||
|
|
<pre><code class="language-bash"># Run comprehensive test suite
|
|||
|
|
nu tests/test_provisioning_refactor.nu
|
|||
|
|
</code></pre>
|
|||
|
|
<h3 id="test-coverage"><a class="header" href="#test-coverage">Test Coverage</a></h3>
|
|||
|
|
<p>The test suite validates:</p>
|
|||
|
|
<ul>
|
|||
|
|
<li>✅ Main help display</li>
|
|||
|
|
<li>✅ Category help (infrastructure, orchestration, development, workspace)</li>
|
|||
|
|
<li>✅ Bi-directional help routing</li>
|
|||
|
|
<li>✅ All command shortcuts</li>
|
|||
|
|
<li>✅ Category shortcut help</li>
|
|||
|
|
<li>✅ Command routing to correct handlers</li>
|
|||
|
|
</ul>
|
|||
|
|
<h3 id="adding-tests-for-your-changes"><a class="header" href="#adding-tests-for-your-changes">Adding Tests for Your Changes</a></h3>
|
|||
|
|
<p>Edit <code>tests/test_provisioning_refactor.nu</code>:</p>
|
|||
|
|
<pre><code class="language-nushell"># Add your test function
|
|||
|
|
export def test_my_new_feature [] {
|
|||
|
|
print "\n🧪 Testing my new feature..."
|
|||
|
|
|
|||
|
|
let output = (run_provisioning "my-command" "test")
|
|||
|
|
assert_contains $output "Expected Output" "My command works"
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
# Add to main test runner
|
|||
|
|
export def main [] {
|
|||
|
|
# ... existing tests
|
|||
|
|
|
|||
|
|
let results = [
|
|||
|
|
# ... existing test calls
|
|||
|
|
(try { test_my_new_feature; "passed" } catch { "failed" })
|
|||
|
|
]
|
|||
|
|
|
|||
|
|
# ... rest of main
|
|||
|
|
}
|
|||
|
|
</code></pre>
|
|||
|
|
<h3 id="manual-testing"><a class="header" href="#manual-testing">Manual Testing</a></h3>
|
|||
|
|
<pre><code class="language-bash"># Test command execution
|
|||
|
|
provisioning/core/cli/provisioning my-command test --check
|
|||
|
|
|
|||
|
|
# Test with debug mode
|
|||
|
|
provisioning/core/cli/provisioning --debug my-command test
|
|||
|
|
|
|||
|
|
# Test help
|
|||
|
|
provisioning/core/cli/provisioning my-command help
|
|||
|
|
provisioning/core/cli/provisioning help my-command # Bi-directional
|
|||
|
|
</code></pre>
|
|||
|
|
<h2 id="common-patterns"><a class="header" href="#common-patterns">Common Patterns</a></h2>
|
|||
|
|
<h3 id="pattern-1-simple-command-handler"><a class="header" href="#pattern-1-simple-command-handler">Pattern 1: Simple Command Handler</a></h3>
|
|||
|
|
<p><strong>Use Case</strong>: Command just needs to execute a module with standard flags</p>
|
|||
|
|
<pre><code class="language-nushell">def handle_simple_command [ops: string, flags: record] {
|
|||
|
|
let args = build_module_args $flags $ops
|
|||
|
|
run_module $args "module_name" --exec
|
|||
|
|
}
|
|||
|
|
</code></pre>
|
|||
|
|
<h3 id="pattern-2-command-with-validation"><a class="header" href="#pattern-2-command-with-validation">Pattern 2: Command with Validation</a></h3>
|
|||
|
|
<p><strong>Use Case</strong>: Need to validate input before execution</p>
|
|||
|
|
<pre><code class="language-nushell">def handle_validated_command [ops: string, flags: record] {
|
|||
|
|
# Validate
|
|||
|
|
let first_arg = ($ops | split row " " | get -o 0)
|
|||
|
|
if ($first_arg | is-empty) {
|
|||
|
|
print "❌ Missing required argument"
|
|||
|
|
print "Usage: provisioning command <arg>"
|
|||
|
|
exit 1
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
# Execute
|
|||
|
|
let args = build_module_args $flags $ops
|
|||
|
|
run_module $args "module_name" --exec
|
|||
|
|
}
|
|||
|
|
</code></pre>
|
|||
|
|
<h3 id="pattern-3-command-with-subcommands"><a class="header" href="#pattern-3-command-with-subcommands">Pattern 3: Command with Subcommands</a></h3>
|
|||
|
|
<p><strong>Use Case</strong>: Command has multiple subcommands (like <code>server create</code>, <code>server delete</code>)</p>
|
|||
|
|
<pre><code class="language-nushell">def handle_complex_command [ops: string, flags: record] {
|
|||
|
|
let subcommand = ($ops | split row " " | get -o 0)
|
|||
|
|
let rest_ops = ($ops | split row " " | skip 1 | str join " ")
|
|||
|
|
|
|||
|
|
match $subcommand {
|
|||
|
|
"create" => { handle_create $rest_ops $flags }
|
|||
|
|
"delete" => { handle_delete $rest_ops $flags }
|
|||
|
|
"list" => { handle_list $rest_ops $flags }
|
|||
|
|
_ => {
|
|||
|
|
print "❌ Unknown subcommand: $subcommand"
|
|||
|
|
print "Available: create, delete, list"
|
|||
|
|
exit 1
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
</code></pre>
|
|||
|
|
<h3 id="pattern-4-command-with-flag-based-routing"><a class="header" href="#pattern-4-command-with-flag-based-routing">Pattern 4: Command with Flag-Based Routing</a></h3>
|
|||
|
|
<p><strong>Use Case</strong>: Command behavior changes based on flags</p>
|
|||
|
|
<pre><code class="language-nushell">def handle_flag_routed_command [ops: string, flags: record] {
|
|||
|
|
if $flags.check_mode {
|
|||
|
|
# Dry-run mode
|
|||
|
|
print "🔍 Check mode: simulating command..."
|
|||
|
|
let args = build_module_args $flags $ops
|
|||
|
|
run_module $args "module_name" # No --exec, returns output
|
|||
|
|
} else {
|
|||
|
|
# Normal execution
|
|||
|
|
let args = build_module_args $flags $ops
|
|||
|
|
run_module $args "module_name" --exec
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
</code></pre>
|
|||
|
|
<h2 id="best-practices"><a class="header" href="#best-practices">Best Practices</a></h2>
|
|||
|
|
<h3 id="1-keep-handlers-focused"><a class="header" href="#1-keep-handlers-focused">1. Keep Handlers Focused</a></h3>
|
|||
|
|
<p>Each handler should do <strong>one thing well</strong>:</p>
|
|||
|
|
<ul>
|
|||
|
|
<li>✅ Good: <code>handle_server</code> manages all server operations</li>
|
|||
|
|
<li>❌ Bad: <code>handle_server</code> also manages clusters and taskservs</li>
|
|||
|
|
</ul>
|
|||
|
|
<h3 id="2-use-descriptive-error-messages"><a class="header" href="#2-use-descriptive-error-messages">2. Use Descriptive Error Messages</a></h3>
|
|||
|
|
<pre><code class="language-nushell"># ❌ Bad
|
|||
|
|
print "Error"
|
|||
|
|
|
|||
|
|
# ✅ Good
|
|||
|
|
print "❌ Unknown taskserv: kubernetes-invalid"
|
|||
|
|
print ""
|
|||
|
|
print "Available taskservs:"
|
|||
|
|
print " • kubernetes"
|
|||
|
|
print " • containerd"
|
|||
|
|
print " • cilium"
|
|||
|
|
print ""
|
|||
|
|
print "Use 'provisioning taskserv list' to see all available taskservs"
|
|||
|
|
</code></pre>
|
|||
|
|
<h3 id="3-leverage-centralized-functions"><a class="header" href="#3-leverage-centralized-functions">3. Leverage Centralized Functions</a></h3>
|
|||
|
|
<p>Don’t repeat code - use centralized functions:</p>
|
|||
|
|
<pre><code class="language-nushell"># ❌ Bad: Repeating flag handling
|
|||
|
|
def handle_bad [ops: string, flags: record] {
|
|||
|
|
let use_check = if $flags.check_mode { "--check " } else { "" }
|
|||
|
|
let use_yes = if $flags.auto_confirm { "--yes " } else { "" }
|
|||
|
|
let str_infra = if ($flags.infra | is-not-empty) { $"--infra ($flags.infra) " } else { "" }
|
|||
|
|
# ... 10 more lines of flag handling
|
|||
|
|
run_module $"($ops) ($use_check)($use_yes)($str_infra)..." "module" --exec
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
# ✅ Good: Using centralized function
|
|||
|
|
def handle_good [ops: string, flags: record] {
|
|||
|
|
let args = build_module_args $flags $ops
|
|||
|
|
run_module $args "module" --exec
|
|||
|
|
}
|
|||
|
|
</code></pre>
|
|||
|
|
<h3 id="4-document-your-changes"><a class="header" href="#4-document-your-changes">4. Document Your Changes</a></h3>
|
|||
|
|
<p>Update relevant documentation:</p>
|
|||
|
|
<ul>
|
|||
|
|
<li><strong>ADR-006</strong>: If architectural changes</li>
|
|||
|
|
<li><strong>CLAUDE.md</strong>: If new commands or shortcuts</li>
|
|||
|
|
<li><strong>help_system.nu</strong>: If new categories or commands</li>
|
|||
|
|
<li><strong>This guide</strong>: If new patterns or conventions</li>
|
|||
|
|
</ul>
|
|||
|
|
<h3 id="5-test-thoroughly"><a class="header" href="#5-test-thoroughly">5. Test Thoroughly</a></h3>
|
|||
|
|
<p>Before committing:</p>
|
|||
|
|
<ul>
|
|||
|
|
<li><input disabled="" type="checkbox"/>
|
|||
|
|
Run test suite: <code>nu tests/test_provisioning_refactor.nu</code></li>
|
|||
|
|
<li><input disabled="" type="checkbox"/>
|
|||
|
|
Test manual execution</li>
|
|||
|
|
<li><input disabled="" type="checkbox"/>
|
|||
|
|
Test with <code>--check</code> flag</li>
|
|||
|
|
<li><input disabled="" type="checkbox"/>
|
|||
|
|
Test with <code>--debug</code> flag</li>
|
|||
|
|
<li><input disabled="" type="checkbox"/>
|
|||
|
|
Test help: both <code>provisioning cmd help</code> and <code>provisioning help cmd</code></li>
|
|||
|
|
<li><input disabled="" type="checkbox"/>
|
|||
|
|
Test shortcuts</li>
|
|||
|
|
</ul>
|
|||
|
|
<h2 id="troubleshooting"><a class="header" href="#troubleshooting">Troubleshooting</a></h2>
|
|||
|
|
<h3 id="issue-module-not-found"><a class="header" href="#issue-module-not-found">Issue: “Module not found”</a></h3>
|
|||
|
|
<p><strong>Cause</strong>: Incorrect import path in handler</p>
|
|||
|
|
<p><strong>Fix</strong>: Use relative imports with <code>.nu</code> extension:</p>
|
|||
|
|
<pre><code class="language-nushell"># ✅ Correct
|
|||
|
|
use ../flags.nu *
|
|||
|
|
use ../../lib_provisioning *
|
|||
|
|
|
|||
|
|
# ❌ Wrong
|
|||
|
|
use ../main_provisioning/flags *
|
|||
|
|
use lib_provisioning *
|
|||
|
|
</code></pre>
|
|||
|
|
<h3 id="issue-parse-mismatch-expected-colon"><a class="header" href="#issue-parse-mismatch-expected-colon">Issue: “Parse mismatch: expected colon”</a></h3>
|
|||
|
|
<p><strong>Cause</strong>: Missing type signature format</p>
|
|||
|
|
<p><strong>Fix</strong>: Use proper Nushell 0.107 type signature:</p>
|
|||
|
|
<pre><code class="language-nushell"># ✅ Correct
|
|||
|
|
export def my_function [param: string]: nothing -> string {
|
|||
|
|
"result"
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
# ❌ Wrong
|
|||
|
|
export def my_function [param: string] -> string {
|
|||
|
|
"result"
|
|||
|
|
}
|
|||
|
|
</code></pre>
|
|||
|
|
<h3 id="issue-command-not-routing-correctly"><a class="header" href="#issue-command-not-routing-correctly">Issue: “Command not routing correctly”</a></h3>
|
|||
|
|
<p><strong>Cause</strong>: Shortcut not in command registry</p>
|
|||
|
|
<p><strong>Fix</strong>: Add to <code>dispatcher.nu:get_command_registry</code>:</p>
|
|||
|
|
<pre><code class="language-nushell">"myshortcut" => "domain command"
|
|||
|
|
</code></pre>
|
|||
|
|
<h3 id="issue-flags-not-being-passed"><a class="header" href="#issue-flags-not-being-passed">Issue: “Flags not being passed”</a></h3>
|
|||
|
|
<p><strong>Cause</strong>: Not using <code>build_module_args</code></p>
|
|||
|
|
<p><strong>Fix</strong>: Use centralized flag builder:</p>
|
|||
|
|
<pre><code class="language-nushell">let args = build_module_args $flags $ops
|
|||
|
|
run_module $args "module" --exec
|
|||
|
|
</code></pre>
|
|||
|
|
<h2 id="quick-reference"><a class="header" href="#quick-reference">Quick Reference</a></h2>
|
|||
|
|
<h3 id="file-locations"><a class="header" href="#file-locations">File Locations</a></h3>
|
|||
|
|
<pre><code>provisioning/core/nulib/
|
|||
|
|
├── provisioning - Main entry, flag definitions
|
|||
|
|
├── main_provisioning/
|
|||
|
|
│ ├── flags.nu - Flag parsing (parse_common_flags, build_module_args)
|
|||
|
|
│ ├── dispatcher.nu - Routing (get_command_registry, dispatch_command)
|
|||
|
|
│ ├── help_system.nu - Help (provisioning-help, help-*)
|
|||
|
|
│ └── commands/ - Domain handlers (handle_*_command)
|
|||
|
|
tests/
|
|||
|
|
└── test_provisioning_refactor.nu - Test suite
|
|||
|
|
docs/
|
|||
|
|
├── architecture/
|
|||
|
|
│ └── ADR-006-provisioning-cli-refactoring.md - Architecture docs
|
|||
|
|
└── development/
|
|||
|
|
└── COMMAND_HANDLER_GUIDE.md - This guide
|
|||
|
|
</code></pre>
|
|||
|
|
<h3 id="key-functions"><a class="header" href="#key-functions">Key Functions</a></h3>
|
|||
|
|
<pre><code class="language-nushell"># In flags.nu
|
|||
|
|
parse_common_flags [flags: record]: nothing -> record
|
|||
|
|
build_module_args [flags: record, extra: string = ""]: nothing -> string
|
|||
|
|
set_debug_env [flags: record]
|
|||
|
|
get_debug_flag [flags: record]: nothing -> string
|
|||
|
|
|
|||
|
|
# In dispatcher.nu
|
|||
|
|
get_command_registry []: nothing -> record
|
|||
|
|
dispatch_command [args: list, flags: record]
|
|||
|
|
|
|||
|
|
# In help_system.nu
|
|||
|
|
provisioning-help [category?: string]: nothing -> string
|
|||
|
|
help-infrastructure []: nothing -> string
|
|||
|
|
help-orchestration []: nothing -> string
|
|||
|
|
# ... (one for each category)
|
|||
|
|
|
|||
|
|
# In commands/*.nu
|
|||
|
|
handle_*_command [command: string, ops: string, flags: record]
|
|||
|
|
# Example: handle_infrastructure_command, handle_workspace_command
|
|||
|
|
</code></pre>
|
|||
|
|
<h3 id="testing-commands"><a class="header" href="#testing-commands">Testing Commands</a></h3>
|
|||
|
|
<pre><code class="language-bash"># Run full test suite
|
|||
|
|
nu tests/test_provisioning_refactor.nu
|
|||
|
|
|
|||
|
|
# Test specific command
|
|||
|
|
provisioning/core/cli/provisioning my-command test --check
|
|||
|
|
|
|||
|
|
# Test with debug
|
|||
|
|
provisioning/core/cli/provisioning --debug my-command test
|
|||
|
|
|
|||
|
|
# Test help
|
|||
|
|
provisioning/core/cli/provisioning help my-command
|
|||
|
|
provisioning/core/cli/provisioning my-command help # Bi-directional
|
|||
|
|
</code></pre>
|
|||
|
|
<h2 id="further-reading"><a class="header" href="#further-reading">Further Reading</a></h2>
|
|||
|
|
<ul>
|
|||
|
|
<li><strong><a href="../architecture/adr/ADR-006-provisioning-cli-refactoring.html">ADR-006: CLI Refactoring</a></strong> - Complete architectural decision record</li>
|
|||
|
|
<li><strong><a href="project-structure.html">Project Structure</a></strong> - Overall project organization</li>
|
|||
|
|
<li><strong><a href="workflow.html">Workflow Development</a></strong> - Workflow system architecture</li>
|
|||
|
|
<li><strong><a href="integration.html">Development Integration</a></strong> - Integration patterns</li>
|
|||
|
|
</ul>
|
|||
|
|
<h2 id="contributing"><a class="header" href="#contributing">Contributing</a></h2>
|
|||
|
|
<p>When contributing command handler changes:</p>
|
|||
|
|
<ol>
|
|||
|
|
<li><strong>Follow existing patterns</strong> - Use the patterns in this guide</li>
|
|||
|
|
<li><strong>Update documentation</strong> - Keep docs in sync with code</li>
|
|||
|
|
<li><strong>Add tests</strong> - Cover your new functionality</li>
|
|||
|
|
<li><strong>Run test suite</strong> - Ensure nothing breaks</li>
|
|||
|
|
<li><strong>Update CLAUDE.md</strong> - Document new commands/shortcuts</li>
|
|||
|
|
</ol>
|
|||
|
|
<p>For questions or issues, refer to ADR-006 or ask the team.</p>
|
|||
|
|
<hr />
|
|||
|
|
<p><em>This guide is part of the provisioning project documentation. Last updated: 2025-09-30</em></p>
|
|||
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