Updates to DSC_CONFIG_ROOT env var

dsc/Cargo.toml

@@ -18,6 +18,7 @@ crossterm = { version = "0.27" }
 ctrlc = { version = "3.4.0" }
 dsc_lib = { path = "../dsc_lib" }
 jsonschema = "0.17"
+path-absolutize = { version = "3.1.1" }
 schemars = { version = "0.8.12" }
 serde = { version = "1.0", features = ["derive"] }
 serde_json = { version = "1.0", features = ["preserve_order"] }

dsc/src/subcommand.rs

@@ -205,9 +205,15 @@ pub fn config(subcommand: &ConfigSubCommand, parameters: &Option<String>, stdin:
         ConfigSubCommand::Test { document, path, .. } |
         ConfigSubCommand::Validate { document, path, .. } |
         ConfigSubCommand::Export { document, path, .. } => {
-            let config_path = path.clone().unwrap_or_default();
-            set_dscconfigroot(&config_path);
-            get_input(document, stdin, path)
+            let mut new_path = path;
+            let opt_new_path;
+            if path.is_some()
+            {
+                let config_path = path.clone().unwrap_or_default();
+                opt_new_path = Some(set_dscconfigroot(&config_path));
+                new_path = &opt_new_path;
+            }
+            get_input(document, stdin, new_path)
         }
     };
 

dsc/src/util.rs

@@ -25,6 +25,7 @@ use dsc_lib::{
     }
 };
 use jsonschema::JSONSchema;
+use path_absolutize::Absolutize;
 use schemars::{schema_for, schema::RootSchema};
 use serde_json::Value;
 use std::collections::HashMap;
@@ -37,7 +38,7 @@ use syntect::{
     parsing::SyntaxSet,
     util::{as_24_bit_terminal_escaped, LinesWithEndings}
 };
-use tracing::{Level, debug, error, trace};
+use tracing::{Level, debug, error, warn, trace};
 use tracing_subscriber::{filter::EnvFilter, layer::SubscriberExt, Layer};
 use tracing_indicatif::IndicatifLayer;
 
@@ -408,16 +409,43 @@ pub fn get_input(input: &Option<String>, stdin: &Option<String>, path: &Option<S
     parse_input_to_json(&value)
 }
 
-pub fn set_dscconfigroot(config_path: &str)
+/// Sets `DSC_CONFIG_ROOT` env var and makes path absolute.
+///
+/// # Arguments
+///
+/// * `config_path` - Full path to the config file 
+///
+/// # Returns
+///
+/// Absolute full path to the config file.
+pub fn set_dscconfigroot(config_path: &str) -> String
 {
     let path = Path::new(config_path);
-    let config_root = match path.parent()
-    {
-        Some(dir_path) => { dir_path.to_str().unwrap_or_default().to_string()},
-        _ => String::new()
+
+    // make path absolute
+    let Ok(full_path) = path.absolutize() else {
+            error!("Error making config path absolute");
+            exit(EXIT_DSC_ERROR);
+    };
+
+    let Some(config_root_path) = full_path.parent() else { 
+        // this should never happen because path was absolutized
+        error!("Error reading config path parent");
+        exit(EXIT_DSC_ERROR);
     };
 
+    let env_var = "DSC_CONFIG_ROOT";
+
+    // warn if env var is already set/used
+    if env::var(env_var).is_ok() {
+        warn!("The current value of '{env_var}' env var will be overridden");
+    }
+
     // Set env var so child processes (of resources) can use it
-    debug!("Setting 'DSCConfigRoot' env var as '{}'", config_root);
-    env::set_var("DSCConfigRoot", config_root.clone());
+    let config_root = config_root_path.to_str().unwrap_or_default();
+    debug!("Setting '{env_var}' env var as '{}'", config_root);
+    env::set_var(env_var, config_root);
+
+    // return absolutized path
+    full_path.to_str().unwrap_or_default().to_string()
 }

powershell-adapter/Tests/PSTestModule/TestClassResource.psm1

@@ -41,7 +41,7 @@ class TestClassResource
         }
         else
         {
-            $this.Prop1 = $env:DSCConfigRoot
+            $this.Prop1 = $env:DSC_CONFIG_ROOT
         }
         $this.EnumProp = [EnumPropEnumeration]::Expected
         return $this

powershell-adapter/Tests/powershellgroup.config.tests.ps1

@@ -107,7 +107,7 @@ Describe 'PowerShell adapter resource tests' {
                 - name: Class-resource Info
                   type: PSTestModule/TestClassResource
                   properties:
-                    Name: "[envvar('DSCConfigRoot')]"
+                    Name: "[envvar('DSC_CONFIG_ROOT')]"
 "@
 
         $config_path = "$TestDrive/test_config.dsc.yaml"
@@ -132,7 +132,7 @@ Describe 'PowerShell adapter resource tests' {
                 - name: Class-resource Info
                   type: PSTestModule/TestClassResource
                   properties:
-                    Name: "[envvar('DSCConfigRoot')]"
+                    Name: "[envvar('DSC_CONFIG_ROOT')]"
 "@
         $out = $yaml | dsc config get
         $LASTEXITCODE | Should -Be 0