feat: allow rust project to override the environment file path

Author: joshstevens19

core/src/generator/build.rs

@@ -440,6 +440,7 @@ serde = {{ version = "1.0.194", features = ["derive"] }}
                         let manifest_path = path.join("rindexer.yaml");
                         let result = start_rindexer(StartDetails {
                             manifest_path: &manifest_path,
+                            override_environment_path: None,
                             indexing_details: if enable_indexer {
                                 Some(IndexingDetails {
                                     registry: register_all_handlers(&manifest_path).await,

core/src/indexer/no_code.rs

@@ -84,6 +84,8 @@ pub async fn setup_no_code(
             if !details.indexing_details.enabled {
                 return Ok(StartDetails {
                     manifest_path: details.manifest_path,
+                    // TODO: enable ability to override this for no-code projects
+                    override_environment_path: None,
                     indexing_details: None,
                     graphql_details: details.graphql_details,
                 });
@@ -115,6 +117,8 @@ pub async fn setup_no_code(
 
             Ok(StartDetails {
                 manifest_path: details.manifest_path,
+                // TODO: enable ability to override this for no-code projects
+                override_environment_path: None,
                 indexing_details: Some(IndexingDetails { registry }),
                 graphql_details: details.graphql_details,
             })

core/src/start.rs

@@ -32,6 +32,7 @@ pub struct IndexingDetails {
 
 pub struct StartDetails<'a> {
     pub manifest_path: &'a PathBuf,
+    pub override_environment_path: Option<&'a PathBuf>,
     pub indexing_details: Option<IndexingDetails>,
     pub graphql_details: GraphqlOverrideSettings,
 }
@@ -78,7 +79,9 @@ pub async fn start_rindexer(details: StartDetails<'_>) -> Result<(), StartRindex
     let project_path = details.manifest_path.parent();
     match project_path {
         Some(project_path) => {
-            load_env_from_path(project_path);
+            let env_path =
+                details.override_environment_path.map(PathBuf::as_path).unwrap_or(project_path);
+            load_env_from_path(env_path);
             let manifest = Arc::new(read_manifest(details.manifest_path)?);
 
             if manifest.project_type != ProjectType::NoCode {

documentation/docs/pages/docs/changelog.mdx

@@ -10,6 +10,7 @@
 - feat: expose postgres ToSql trait
 - feat: support with_transaction in postgres client
 - feat: get the block timestamp from the RPC call (its an option as not all providers expose it)
+- feat: allow rust project to override the environment file path
 
 ### Bug fixes
 -------------------------------------------------

documentation/docs/pages/docs/start-building/rust-project-deep-dive/indexers.mdx

@@ -992,6 +992,7 @@ async fn main() {
             let manifest_path = path.join("rindexer.yaml");
             let result = start_rindexer(StartDetails {
                 manifest_path: &manifest_path,
+                override_environment_path: None,
                 indexing_details: if enable_indexer {
                     Some(IndexingDetails {
                         registry: register_all_handlers(&manifest_path).await,

rindexer_rust_playground/src/main.rs

@@ -55,6 +55,7 @@ async fn main() {
             let manifest_path = path.join("rindexer.yaml");
             let result = start_rindexer(StartDetails {
                 manifest_path: &manifest_path,
+                override_environment_path: None,
                 indexing_details: if enable_indexer {
                     // EventCallbackRegistry { events: vec![] }
                     Some(IndexingDetails { registry: register_all_handlers(&manifest_path).await })