update identifier to {{*}}

Cargo.toml

@@ -54,6 +54,7 @@ insta = "1"
 jsonschema = "0.18.0"
 log = "0.4.22"
 prometheus = "0.13"
+regex = "1.11.0"
 reqwest = "0.11"
 schemars = "0.8"
 serde = "1"

crates/cli/Cargo.toml

@@ -23,6 +23,7 @@ tracing-subscriber = "0.3.18"
 tracing = "0.1.40"
 log = "0.4.22"
 env_logger = "0.11.5"
+regex = { workspace = true }
 
 [build-dependencies]
 build-data = { workspace = true }

crates/cli/src/lib.rs

@@ -4,6 +4,7 @@
 //! then done, making it easier to test this crate deterministically.
 
 use std::path::PathBuf;
+use regex::Regex;
 
 use std::collections::BTreeMap;
 use anyhow::Ok;
@@ -227,14 +228,19 @@ async fn update(context: Context<impl Environment>, calcite_ref_singleton: &Calc
     // for each env var present in the map from the metadata file, replace the placeholder in the model file
     for (key, value) in &env_var_map {
         // include the identifiers with the env var to avoid replacing the wrong value
-        let env_var_identifier = format!("<$>{}", key);
+        let env_var_identifier = format!("{{{{{}}}}}", key);
         model_file_value = model_file_value.replace(&env_var_identifier, value);
     }
+
+    // Create a regex pattern to match `{{*}}`
+    let re = Regex::new(r"\{\{.*?\}\}").unwrap();
+
     // check if there is any placeholder left in the model file, which means
-    // there is an extra env var which is not allowed i the metadata or there is
+    // there is an extra env var which is not allowed in the metadata or there is
     // a mismatch between the two files.
-    let final_model_string = if model_file_value.contains("<$>") {
-        Err(anyhow::Error::msg("Some environment variables are not replaced"))
+    let final_model_string = if re.is_match(&model_file_value) {
+        Err(anyhow::Error::msg(
+            "Some environment variable placeholders are not updated in the model file"))
     } else {
         Ok(model_file_value)
     }?;