quickwit-oss · Platane · Jan 2, 2026
diff --git a/quickwit/quickwit-metastore/migrations/postgresql/26_create-index-routing-rules.down.sql b/quickwit/quickwit-metastore/migrations/postgresql/26_create-index-routing-rules.down.sql
@@ -0,0 +1 @@
+DROP TABLE IF EXISTS index_routing_rules;
diff --git a/quickwit/quickwit-metastore/migrations/postgresql/26_create-index-routing-rules.up.sql b/quickwit/quickwit-metastore/migrations/postgresql/26_create-index-routing-rules.up.sql
@@ -0,0 +1,11 @@
+CREATE TABLE IF NOT EXISTS index_routing_rules (
+    routing_table_id VARCHAR(50) NOT NULL,
+    rank INTEGER NOT NULL,
+    filter TEXT NOT NULL,
+    index_id VARCHAR(50) NOT NULL,
+    create_timestamp TIMESTAMP NOT NULL DEFAULT (CURRENT_TIMESTAMP AT TIME ZONE 'UTC'),
+    update_timestamp TIMESTAMP NOT NULL DEFAULT (CURRENT_TIMESTAMP AT TIME ZONE 'UTC'),
+
+    PRIMARY KEY (routing_table_id, rank),
+    FOREIGN KEY(index_id) REFERENCES indexes(index_id)
+);
diff --git a/quickwit/quickwit-metastore/src/metastore/control_plane_metastore.rs b/quickwit/quickwit-metastore/src/metastore/control_plane_metastore.rs
@@ -19,11 +19,12 @@ use quickwit_common::uri::Uri;
 use quickwit_proto::control_plane::{ControlPlaneService, ControlPlaneServiceClient};
 use quickwit_proto::metastore::{
     AcquireShardsRequest, AcquireShardsResponse, AddSourceRequest, CreateIndexRequest,
-    CreateIndexResponse, CreateIndexTemplateRequest, DeleteIndexRequest,
-    DeleteIndexTemplatesRequest, DeleteQuery, DeleteShardsRequest, DeleteShardsResponse,
-    DeleteSourceRequest, DeleteSplitsRequest, DeleteTask, EmptyResponse,
-    FindIndexTemplateMatchesRequest, FindIndexTemplateMatchesResponse, GetClusterIdentityRequest,
-    GetClusterIdentityResponse, GetIndexTemplateRequest, GetIndexTemplateResponse,
+    CreateIndexResponse, CreateIndexRoutingTableRequest, CreateIndexRoutingTableResponse,
+    CreateIndexTemplateRequest, DeleteIndexRequest, DeleteIndexTemplatesRequest, DeleteQuery,
+    DeleteShardsRequest, DeleteShardsResponse, DeleteSourceRequest, DeleteSplitsRequest,
+    DeleteTask, EmptyResponse, FindIndexTemplateMatchesRequest, FindIndexTemplateMatchesResponse,
+    GetClusterIdentityRequest, GetClusterIdentityResponse, GetIndexRoutingTableRequest,
+    GetIndexRoutingTableResponse, GetIndexTemplateRequest, GetIndexTemplateResponse,
     IndexMetadataRequest, IndexMetadataResponse, IndexesMetadataRequest, IndexesMetadataResponse,
     LastDeleteOpstampRequest, LastDeleteOpstampResponse, ListDeleteTasksRequest,
     ListDeleteTasksResponse, ListIndexStatsRequest, ListIndexStatsResponse,
@@ -289,4 +290,18 @@ impl MetastoreService for ControlPlaneMetastore {
     ) -> MetastoreResult<GetClusterIdentityResponse> {
         self.metastore.get_cluster_identity(request).await
     }
+
+    async fn create_index_routing_table(
+        &self,
+        request: CreateIndexRoutingTableRequest,
+    ) -> MetastoreResult<CreateIndexRoutingTableResponse> {
+        self.metastore.create_index_routing_table(request).await
+    }
+
+    async fn get_index_routing_table(
+        &self,
+        request: GetIndexRoutingTableRequest,
+    ) -> MetastoreResult<GetIndexRoutingTableResponse> {
+        self.metastore.get_index_routing_table(request).await
+    }
 }
diff --git a/quickwit/quickwit-metastore/src/metastore/file_backed/mod.rs b/quickwit/quickwit-metastore/src/metastore/file_backed/mod.rs
@@ -41,22 +41,24 @@ use quickwit_common::ServiceStream;
 use quickwit_config::IndexTemplate;
 use quickwit_proto::metastore::{
     AcquireShardsRequest, AcquireShardsResponse, AddSourceRequest, CreateIndexRequest,
-    CreateIndexResponse, CreateIndexTemplateRequest, DeleteIndexRequest,
-    DeleteIndexTemplatesRequest, DeleteQuery, DeleteShardsRequest, DeleteShardsResponse,
-    DeleteSourceRequest, DeleteSplitsRequest, DeleteTask, EmptyResponse, EntityKind,
-    FindIndexTemplateMatchesRequest, FindIndexTemplateMatchesResponse, GetClusterIdentityRequest,
-    GetClusterIdentityResponse, GetIndexTemplateRequest, GetIndexTemplateResponse,
-    IndexMetadataFailure, IndexMetadataFailureReason, IndexMetadataRequest, IndexMetadataResponse,
-    IndexTemplateMatch, IndexesMetadataRequest, IndexesMetadataResponse, LastDeleteOpstampRequest,
-    LastDeleteOpstampResponse, ListDeleteTasksRequest, ListDeleteTasksResponse,
-    ListIndexStatsRequest, ListIndexStatsResponse, ListIndexTemplatesRequest,
-    ListIndexTemplatesResponse, ListIndexesMetadataRequest, ListIndexesMetadataResponse,
-    ListShardsRequest, ListShardsResponse, ListSplitsRequest, ListSplitsResponse,
-    ListStaleSplitsRequest, MarkSplitsForDeletionRequest, MetastoreError, MetastoreResult,
-    MetastoreService, MetastoreServiceStream, OpenShardSubrequest, OpenShardsRequest,
-    OpenShardsResponse, PruneShardsRequest, PublishSplitsRequest, ResetSourceCheckpointRequest,
-    StageSplitsRequest, ToggleSourceRequest, UpdateIndexRequest, UpdateSourceRequest,
-    UpdateSplitsDeleteOpstampRequest, UpdateSplitsDeleteOpstampResponse, serde_utils,
+    CreateIndexResponse, CreateIndexRoutingTableRequest, CreateIndexRoutingTableResponse,
+    CreateIndexTemplateRequest, DeleteIndexRequest, DeleteIndexTemplatesRequest, DeleteQuery,
+    DeleteShardsRequest, DeleteShardsResponse, DeleteSourceRequest, DeleteSplitsRequest,
+    DeleteTask, EmptyResponse, EntityKind, FindIndexTemplateMatchesRequest,
+    FindIndexTemplateMatchesResponse, GetClusterIdentityRequest, GetClusterIdentityResponse,
+    GetIndexRoutingTableRequest, GetIndexRoutingTableResponse, GetIndexTemplateRequest,
+    GetIndexTemplateResponse, IndexMetadataFailure, IndexMetadataFailureReason,
+    IndexMetadataRequest, IndexMetadataResponse, IndexTemplateMatch, IndexesMetadataRequest,
+    IndexesMetadataResponse, LastDeleteOpstampRequest, LastDeleteOpstampResponse,
+    ListDeleteTasksRequest, ListDeleteTasksResponse, ListIndexStatsRequest, ListIndexStatsResponse,
+    ListIndexTemplatesRequest, ListIndexTemplatesResponse, ListIndexesMetadataRequest,
+    ListIndexesMetadataResponse, ListShardsRequest, ListShardsResponse, ListSplitsRequest,
+    ListSplitsResponse, ListStaleSplitsRequest, MarkSplitsForDeletionRequest, MetastoreError,
+    MetastoreResult, MetastoreService, MetastoreServiceStream, OpenShardSubrequest,
+    OpenShardsRequest, OpenShardsResponse, PruneShardsRequest, PublishSplitsRequest,
+    ResetSourceCheckpointRequest, StageSplitsRequest, ToggleSourceRequest, UpdateIndexRequest,
+    UpdateSourceRequest, UpdateSplitsDeleteOpstampRequest, UpdateSplitsDeleteOpstampResponse,
+    serde_utils,
 };
 use quickwit_proto::types::{IndexId, IndexUid};
 use quickwit_storage::Storage;
@@ -1275,6 +1277,26 @@ impl MetastoreService for FileBackedMetastore {
             uuid: state_wlock_guard.identity.hyphenated().to_string(),
         })
     }
+
+    async fn create_index_routing_table(
+        &self,
+        _request: CreateIndexRoutingTableRequest,
+    ) -> MetastoreResult<CreateIndexRoutingTableResponse> {
+        Err(MetastoreError::Internal {
+            message: "routing tables are not supported in file-backed metastore".to_string(),
+            cause: "unsupported operation".to_string(),
+        })
+    }
+
+    async fn get_index_routing_table(
+        &self,
+        _request: GetIndexRoutingTableRequest,
+    ) -> MetastoreResult<GetIndexRoutingTableResponse> {
+        Err(MetastoreError::Internal {
+            message: "routing tables are not supported in file-backed metastore".to_string(),
+            cause: "unsupported operation".to_string(),
+        })
+    }
 }
 
 impl MetastoreServiceExt for FileBackedMetastore {}

diff --git a/quickwit/quickwit-metastore/src/metastore/postgres/error.rs b/quickwit/quickwit-metastore/src/metastore/postgres/error.rs
@@ -40,6 +40,13 @@ pub(super) fn convert_sqlx_err(index_id: &str, sqlx_error: sqlx::Error) -> Metas
                         index_id: index_id.to_string(),
                     })
                 }
+                (pg_error_codes::UNIQUE_VIOLATION, Some("index_routing_rules")) => {
+                    error!(error=?boxed_db_error, "postgresql-error");
+                    MetastoreError::Internal {
+                        message: "duplicate rank in routing table".to_string(),
+                        cause: format!("DB error {boxed_db_error:?}"),
+                    }
+                }
                 (pg_error_codes::UNIQUE_VIOLATION, _) => {
                     error!(error=?boxed_db_error, "postgresql-error");
                     MetastoreError::Internal {

diff --git a/quickwit/quickwit-metastore/src/metastore/postgres/metastore.rs b/quickwit/quickwit-metastore/src/metastore/postgres/metastore.rs
@@ -29,19 +29,21 @@ use quickwit_config::{
 use quickwit_proto::ingest::{Shard, ShardState};
 use quickwit_proto::metastore::{
     AcquireShardsRequest, AcquireShardsResponse, AddSourceRequest, CreateIndexRequest,
-    CreateIndexResponse, CreateIndexTemplateRequest, DeleteIndexRequest,
-    DeleteIndexTemplatesRequest, DeleteQuery, DeleteShardsRequest, DeleteShardsResponse,
-    DeleteSourceRequest, DeleteSplitsRequest, DeleteTask, EmptyResponse, EntityKind,
-    FindIndexTemplateMatchesRequest, FindIndexTemplateMatchesResponse, GetClusterIdentityRequest,
-    GetClusterIdentityResponse, GetIndexTemplateRequest, GetIndexTemplateResponse,
-    IndexMetadataFailure, IndexMetadataFailureReason, IndexMetadataRequest, IndexMetadataResponse,
-    IndexStats, IndexTemplateMatch, IndexesMetadataRequest, IndexesMetadataResponse,
-    LastDeleteOpstampRequest, LastDeleteOpstampResponse, ListDeleteTasksRequest,
-    ListDeleteTasksResponse, ListIndexStatsRequest, ListIndexStatsResponse,
-    ListIndexTemplatesRequest, ListIndexTemplatesResponse, ListIndexesMetadataRequest,
-    ListIndexesMetadataResponse, ListShardsRequest, ListShardsResponse, ListShardsSubresponse,
-    ListSplitsRequest, ListSplitsResponse, ListStaleSplitsRequest, MarkSplitsForDeletionRequest,
-    MetastoreError, MetastoreResult, MetastoreService, MetastoreServiceStream, OpenShardSubrequest,
+    CreateIndexResponse, CreateIndexRoutingTableRequest, CreateIndexRoutingTableResponse,
+    CreateIndexTemplateRequest, DeleteIndexRequest, DeleteIndexTemplatesRequest, DeleteQuery,
+    DeleteShardsRequest, DeleteShardsResponse, DeleteSourceRequest, DeleteSplitsRequest,
+    DeleteTask, EmptyResponse, EntityKind, FindIndexTemplateMatchesRequest,
+    FindIndexTemplateMatchesResponse, GetClusterIdentityRequest, GetClusterIdentityResponse,
+    GetIndexRoutingTableRequest, GetIndexRoutingTableResponse, GetIndexTemplateRequest,
+    GetIndexTemplateResponse, IndexMetadataFailure, IndexMetadataFailureReason,
+    IndexMetadataRequest, IndexMetadataResponse, IndexRoutingRule, IndexStats, IndexTemplateMatch,
+    IndexesMetadataRequest, IndexesMetadataResponse, LastDeleteOpstampRequest,
+    LastDeleteOpstampResponse, ListDeleteTasksRequest, ListDeleteTasksResponse,
+    ListIndexStatsRequest, ListIndexStatsResponse, ListIndexTemplatesRequest,
+    ListIndexTemplatesResponse, ListIndexesMetadataRequest, ListIndexesMetadataResponse,
+    ListShardsRequest, ListShardsResponse, ListShardsSubresponse, ListSplitsRequest,
+    ListSplitsResponse, ListStaleSplitsRequest, MarkSplitsForDeletionRequest, MetastoreError,
+    MetastoreResult, MetastoreService, MetastoreServiceStream, OpenShardSubrequest,
     OpenShardSubresponse, OpenShardsRequest, OpenShardsResponse, PruneShardsRequest,
     PublishSplitsRequest, ResetSourceCheckpointRequest, SplitStats, StageSplitsRequest,
     ToggleSourceRequest, UpdateIndexRequest, UpdateSourceRequest, UpdateSplitsDeleteOpstampRequest,
@@ -57,7 +59,9 @@ use uuid::Uuid;
 
 use super::error::convert_sqlx_err;
 use super::migrator::run_migrations;
-use super::model::{PgDeleteTask, PgIndex, PgIndexTemplate, PgShard, PgSplit, Splits};
+use super::model::{
+    PgDeleteTask, PgIndex, PgIndexRoutingRule, PgIndexTemplate, PgShard, PgSplit, Splits,
+};
 use super::pool::TrackedPool;
 use super::split_stream::SplitStream;
 use super::utils::{append_query_filters_and_order_by, establish_connection};
@@ -1763,6 +1767,68 @@ impl MetastoreService for PostgresqlMetastore {
         .await?;
         Ok(GetClusterIdentityResponse { uuid })
     }
+
+    async fn create_index_routing_table(
+        &self,
+        request: CreateIndexRoutingTableRequest,
+    ) -> MetastoreResult<CreateIndexRoutingTableResponse> {
+        const INSERT_ROUTING_RULE_QUERY: &str = include_str!("queries/routing_rules/insert.sql");
+
+        // Validate request
+        if request.rules.is_empty() {
+            return Err(MetastoreError::InvalidArgument {
+                message: "routing table must contain at least one rule".to_string(),
+            });
+        }
+
+        // Generate routing_table_id
+        let routing_table_id = Uuid::new_v4().hyphenated().to_string();
+
+        // Use transaction for atomicity
+        run_with_tx!(self.connection_pool, tx, "create_routing_table", {
+            // Insert each rule with its array index as the rank
+            for (rank, rule) in request.rules.iter().enumerate() {
+                sqlx::query(INSERT_ROUTING_RULE_QUERY)
+                    .bind(&routing_table_id)
+                    .bind(rank as i32)
+                    .bind(&rule.filter)
+                    .bind(&rule.index_id)
+                    .execute(tx.as_mut())
+                    .await
+                    .map_err(|e| convert_sqlx_err("routing_rules", e))?;
+            }
+
+            Ok(CreateIndexRoutingTableResponse { routing_table_id })
+        })
+    }
+
+    async fn get_index_routing_table(
+        &self,
+        request: GetIndexRoutingTableRequest,
+    ) -> MetastoreResult<GetIndexRoutingTableResponse> {
+        const SELECT_ROUTING_RULES_QUERY: &str = include_str!("queries/routing_rules/select.sql");
+
+        let pg_rules: Vec<PgIndexRoutingRule> = sqlx::query_as(SELECT_ROUTING_RULES_QUERY)
+            .bind(&request.routing_table_id)
+            .fetch_all(&self.connection_pool)
+            .await?;
+
+        if pg_rules.is_empty() {
+            return Err(MetastoreError::NotFound(EntityKind::RoutingTable {
+                routing_table_id: request.routing_table_id.clone(),
+            }));
+        }
+
+        let rules = pg_rules
+            .into_iter()
+            .map(|pg_rule| IndexRoutingRule {
+                index_id: pg_rule.index_id,
+                filter: pg_rule.filter,
+            })
+            .collect();
+
+        Ok(GetIndexRoutingTableResponse { rules })
+    }
 }
 
 async fn open_or_fetch_shard<'e>(

diff --git a/quickwit/quickwit-metastore/src/metastore/postgres/model.rs b/quickwit/quickwit-metastore/src/metastore/postgres/model.rs
@@ -292,3 +292,11 @@ impl From<PgShard> for Shard {
 pub(super) struct PgIndexTemplate {
     pub index_template_json: String,
 }
+
+#[derive(sqlx::FromRow, Debug)]
+pub(super) struct PgIndexRoutingRule {
+    pub routing_table_id: String,
+    pub rank: i32,
+    pub filter: String,
+    pub index_id: String,
+}
diff --git a/quickwit/quickwit-metastore/src/metastore/postgres/queries/routing_rules/insert.sql b/quickwit/quickwit-metastore/src/metastore/postgres/queries/routing_rules/insert.sql
@@ -0,0 +1,2 @@
+INSERT INTO index_routing_rules (routing_table_id, rank, filter, index_id)
+VALUES ($1, $2, $3, $4)
diff --git a/quickwit/quickwit-metastore/src/metastore/postgres/queries/routing_rules/select.sql b/quickwit/quickwit-metastore/src/metastore/postgres/queries/routing_rules/select.sql
@@ -0,0 +1,4 @@
+SELECT routing_table_id, rank, filter, index_id
+FROM index_routing_rules
+WHERE routing_table_id = $1
+ORDER BY rank ASC
diff --git a/quickwit/quickwit-proto/protos/quickwit/metastore.proto b/quickwit/quickwit-proto/protos/quickwit/metastore.proto
@@ -204,11 +204,16 @@ service MetastoreService {
 
   // Get cluster identity
   rpc GetClusterIdentity(GetClusterIdentityRequest) returns (GetClusterIdentityResponse);
-}
 
-message EmptyResponse {
+  // Creates index routing table
+  rpc CreateIndexRoutingTable(CreateIndexRoutingTableRequest) returns (CreateIndexRoutingTableResponse);
+
+  // Get index routing table
+  rpc GetIndexRoutingTable(GetIndexRoutingTableRequest) returns (GetIndexRoutingTableResponse);
 }
 
+message EmptyResponse {}
+
 message CreateIndexRequest {
   string index_config_json = 2;
   repeated string source_configs_json = 3;
@@ -229,7 +234,7 @@ message UpdateIndexRequest {
 }
 
 message ListIndexesMetadataRequest {
-  reserved  1;
+  reserved 1;
   // List of patterns an index should match or not match to get considered
   // An index must match at least one positive pattern (a pattern not starting
   // with a '-'), and no negative pattern (a pattern starting with a '-').
@@ -550,8 +555,7 @@ message IndexTemplateMatch {
   string index_template_json = 3;
 }
 
-message ListIndexTemplatesRequest {
-}
+message ListIndexTemplatesRequest {}
 
 message ListIndexTemplatesResponse {
   repeated string index_templates_json = 1;
@@ -561,9 +565,29 @@ message DeleteIndexTemplatesRequest {
   repeated string template_ids = 1;
 }
 
-message GetClusterIdentityRequest {
-}
+message GetClusterIdentityRequest {}
 
 message GetClusterIdentityResponse {
   string uuid = 1;
 }
+
+message CreateIndexRoutingTableRequest {
+  repeated IndexRoutingRule rules = 1;
+}
+
+message CreateIndexRoutingTableResponse {
+  string routing_table_id = 1;
+}
+
+message GetIndexRoutingTableRequest {
+  string routing_table_id = 1;
+}
+
+message GetIndexRoutingTableResponse {
+  repeated IndexRoutingRule rules = 1;
+}
+
+message IndexRoutingRule {
+  string index_id = 1;
+  string filter = 2;
+}
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1,2 @@
		INSERT INTO index_routing_rules (routing_table_id, rank, filter, index_id)
		VALUES ($1, $2, $3, $4)