support querying multiple subgraph's features in single query

graph/src/data/subgraph/mod.rs

@@ -597,6 +597,7 @@ impl IntoValue for DeploymentFeatures {
     fn into_value(self) -> r::Value {
         object! {
             __typename: "SubgraphFeatures",
+            subgraph: self.id,
             specVersion: self.spec_version,
             apiVersion: self.api_version,
             features: self.features,

server/index-node/src/resolver.rs

@@ -1,4 +1,4 @@
-use std::collections::BTreeMap;
+use std::collections::{BTreeMap, HashSet};
 use std::convert::TryInto;
 
 use graph::data::query::Trace;
@@ -565,37 +565,54 @@ impl<S: Store> IndexNodeResolver<S> {
         field: &a::Field,
     ) -> Result<r::Value, QueryExecutionError> {
         // We can safely unwrap because the argument is non-nullable and has been validated.
-        let subgraph_id = field.get_required::<String>("subgraphId").unwrap();
+        let subgraph_ids: HashSet<String> = field
+            .get_required::<Vec<String>>("subgraphs")
+            .unwrap()
+            .into_iter()
+            .collect();
 
-        // Try to build a deployment hash with the input string
-        let deployment_hash = DeploymentHash::new(subgraph_id).map_err(|invalid_qm_hash| {
-            QueryExecutionError::SubgraphDeploymentIdError(invalid_qm_hash)
-        })?;
+        if subgraph_ids.is_empty() {
+            return Ok(r::Value::List(Vec::new()));
+        }
 
         let subgraph_store = self.store.subgraph_store();
-        let features = match subgraph_store.subgraph_features(&deployment_hash).await? {
-            Some(features) => {
-                let mut deployment_features = features.clone();
-                let features = &mut deployment_features.features;
+        let mut all_features = vec![];
 
-                if deployment_features.has_declared_calls {
-                    features.push("declaredEthCalls".to_string());
-                }
-                if deployment_features.has_aggregations {
-                    features.push("aggregations".to_string());
+        for subgraph_id in subgraph_ids {
+            let deployment_hash = match DeploymentHash::new(subgraph_id) {
+                Ok(hash) => hash,
+                Err(_) => {
+                    continue;
                 }
-                if !deployment_features.immutable_entities.is_empty() {
-                    features.push("immutableEntities".to_string());
-                }
-                if deployment_features.has_bytes_as_ids {
-                    features.push("bytesAsIds".to_string());
+            };
+
+            // Fetch features from store or IPFS
+            let features = match subgraph_store.subgraph_features(&deployment_hash).await? {
+                Some(features) => {
+                    let mut deployment_features = features.clone();
+                    let features = &mut deployment_features.features;
+
+                    if deployment_features.has_declared_calls {
+                        features.push("declaredEthCalls".to_string());
+                    }
+                    if deployment_features.has_aggregations {
+                        features.push("aggregations".to_string());
+                    }
+                    if !deployment_features.immutable_entities.is_empty() {
+                        features.push("immutableEntities".to_string());
+                    }
+                    if deployment_features.has_bytes_as_ids {
+                        features.push("bytesAsIds".to_string());
+                    }
+                    deployment_features
                 }
-                deployment_features
-            }
-            None => self.get_features_from_ipfs(&deployment_hash).await?,
-        };
+                None => self.get_features_from_ipfs(&deployment_hash).await?,
+            };
 
-        Ok(features.into_value())
+            all_features.push(features.into_value());
+        }
+
+        Ok(r::Value::List(all_features))
     }
 
     fn resolve_api_versions(&self, _field: &a::Field) -> Result<r::Value, QueryExecutionError> {
@@ -817,6 +834,11 @@ impl<S: Store> Resolver for IndexNodeResolver<S> {
                 self.resolve_public_proofs_of_indexing(field).await
             }
 
+            // The top-level `subgraphFeatures` field
+            (None, "SubgraphFeatures", "subgraphFeatures") => {
+                self.resolve_subgraph_features(field).await
+            }
+
             // Resolve fields of `Object` values (e.g. the `chains` field of `ChainIndexingStatus`)
             (value, _, _) => Ok(value.unwrap_or(r::Value::Null)),
         }
@@ -837,7 +859,6 @@ impl<S: Store> Resolver for IndexNodeResolver<S> {
             (None, "indexingStatusForPendingVersion") => {
                 self.resolve_indexing_status_for_version(field, false)
             }
-            (None, "subgraphFeatures") => self.resolve_subgraph_features(field).await,
             (None, "entityChangesInBlock") => self.resolve_entity_changes_in_block(field),
             // The top-level `subgraphVersions` field
             (None, "apiVersions") => self.resolve_api_versions(field),

server/index-node/src/schema.graphql

@@ -36,7 +36,7 @@ type Query {
   publicProofsOfIndexing(
     requests: [PublicProofOfIndexingRequest!]!
   ): [PublicProofOfIndexingResult!]!
-  subgraphFeatures(subgraphId: String!): SubgraphFeatures!
+  subgraphFeatures(subgraphs: [String!]!): [SubgraphFeatures!]!
   entityChangesInBlock(subgraphId: String!, blockNumber: Int!): EntityChanges!
   blockData(network: String!, blockHash: Bytes!): JSONObject
   blockHashFromNumber(network: String!, blockNumber: Int!): Bytes
@@ -148,6 +148,7 @@ type CachedEthereumCall {
 }
 
 type SubgraphFeatures {
+  subgraph: String!
   apiVersion: String
   specVersion: String!
   features: [Feature!]!

tests/tests/integration_tests.rs

@@ -534,7 +534,8 @@ pub async fn test_block_handlers(ctx: TestContext) -> anyhow::Result<()> {
     // test subgraphFeatures endpoint returns handlers correctly
     let subgraph_features = Subgraph::query_with_vars(
         "query GetSubgraphFeatures($deployment: String!) {
-          subgraphFeatures(subgraphId: $deployment) {
+          subgraphFeatures(subgraphs: [$deployment]) {
+            subgraph
             specVersion
             apiVersion
             features
@@ -546,7 +547,23 @@ pub async fn test_block_handlers(ctx: TestContext) -> anyhow::Result<()> {
         json!({ "deployment": subgraph.deployment }),
     )
     .await?;
-    let handlers = &subgraph_features["data"]["subgraphFeatures"]["handlers"];
+    // The response is now an array, get the first element
+    let features_array = &subgraph_features["data"]["subgraphFeatures"];
+    assert!(
+        features_array.is_array(),
+        "subgraphFeatures must return an array"
+    );
+    assert_eq!(
+        features_array.as_array().unwrap().len(),
+        1,
+        "Expected exactly one subgraph feature set"
+    );
+    let subgraph_feature = &features_array[0];
+    assert_eq!(
+        subgraph_feature["subgraph"], subgraph.deployment,
+        "Subgraph ID should match the deployment"
+    );
+    let handlers = &subgraph_feature["handlers"];
     assert!(
         handlers.is_array(),
         "subgraphFeatures.handlers must be an array"
@@ -762,7 +779,8 @@ async fn test_non_fatal_errors(ctx: TestContext) -> anyhow::Result<()> {
     assert!(!subgraph.healthy);
 
     let query = "query GetSubgraphFeatures($deployment: String!) {
-        subgraphFeatures(subgraphId: $deployment) {
+        subgraphFeatures(subgraphs: [$deployment]) {
+          subgraph
           specVersion
           apiVersion
           features
@@ -774,16 +792,35 @@ async fn test_non_fatal_errors(ctx: TestContext) -> anyhow::Result<()> {
 
     let resp =
         Subgraph::query_with_vars(query, json!({ "deployment" : subgraph.deployment })).await?;
-    let subgraph_features = &resp["data"]["subgraphFeatures"];
+
+    // The response is now an array, get the first element
+    let features_array = &resp["data"]["subgraphFeatures"];
+    assert!(
+        features_array.is_array(),
+        "subgraphFeatures must return an array"
+    );
+    assert_eq!(
+        features_array.as_array().unwrap().len(),
+        1,
+        "Expected exactly one subgraph feature set"
+    );
+
+    let subgraph_feature = &features_array[0];
+    assert_eq!(
+        subgraph_feature["subgraph"], subgraph.deployment,
+        "Subgraph ID should match the deployment"
+    );
+
     let exp = json!({
+      "subgraph": subgraph.deployment,
       "specVersion": "0.0.4",
       "apiVersion": "0.0.6",
       "features": ["nonFatalErrors"],
       "dataSources": ["ethereum/contract"],
       "handlers": ["block"],
       "network": "test",
     });
-    assert_eq!(&exp, subgraph_features);
+    assert_eq!(&exp, subgraph_feature);
 
     let resp = subgraph
         .query("{ foos(orderBy: id, subgraphError: allow) { id } }")