[Conductor] Delete the backend crate (#35569)

GitOrigin-RevId: a4aa5c1f903c35d71f5e382cf8c416babf872d57

Author: jordanhunt22

crates/clusters/Cargo.toml

@@ -11,5 +11,11 @@ clap = { workspace = true }
 common = { path = "../../crates/common" }
 url = { workspace = true }
 
+[features]
+testing = ["common/testing"]
+
 [lints]
 workspace = true
+
+[dev-dependencies]
+common = { path = "../../crates/common", features = ["testing"] }

crates/clusters/src/db_driver_tag.rs

@@ -9,6 +9,8 @@ pub enum DbDriverTag {
     PostgresAwsIam(PersistenceVersion),
     MySql(PersistenceVersion),
     MySqlAwsIam(PersistenceVersion),
+    #[cfg(any(test, feature = "testing"))]
+    TestPersistence,
 }
 
 impl clap::ValueEnum for DbDriverTag {
@@ -19,6 +21,8 @@ impl clap::ValueEnum for DbDriverTag {
             DbDriverTag::MySqlAwsIam(PersistenceVersion::V5),
             DbDriverTag::Postgres(PersistenceVersion::V5),
             DbDriverTag::PostgresAwsIam(PersistenceVersion::V5),
+            #[cfg(any(test, feature = "testing"))]
+            DbDriverTag::TestPersistence,
         ]
     }
 
@@ -34,7 +38,13 @@ impl DbDriverTag {
             | Self::PostgresAwsIam(version)
             | Self::MySql(version)
             | Self::MySqlAwsIam(version) => Ok(*version),
-            Self::Sqlite => anyhow::bail!("sqlite has no persistence version"),
+            Self::Sqlite => {
+                anyhow::bail!("sqlite has no persistence version")
+            },
+            #[cfg(any(test, feature = "testing"))]
+            Self::TestPersistence => {
+                anyhow::bail!("test persistence has no persistence version")
+            },
         }
     }
 
@@ -45,6 +55,8 @@ impl DbDriverTag {
             DbDriverTag::PostgresAwsIam(PersistenceVersion::V5) => "postgres-v5-aws-iam",
             DbDriverTag::MySql(PersistenceVersion::V5) => "mysql-v5",
             DbDriverTag::MySqlAwsIam(PersistenceVersion::V5) => "mysql-v5-aws-iam",
+            #[cfg(any(test, feature = "testing"))]
+            DbDriverTag::TestPersistence => "test-persistence",
         }
     }
 }
@@ -59,6 +71,8 @@ impl FromStr for DbDriverTag {
             "postgres-v5-aws-iam" => Ok(DbDriverTag::PostgresAwsIam(PersistenceVersion::V5)),
             "mysql-v5" => Ok(DbDriverTag::MySql(PersistenceVersion::V5)),
             "mysql-v5-aws-iam" => Ok(DbDriverTag::MySqlAwsIam(PersistenceVersion::V5)),
+            #[cfg(any(test, feature = "testing"))]
+            "test-persistence" => Ok(DbDriverTag::TestPersistence),
             _ => anyhow::bail!("unrecognized db_driver {s}"),
         }
     }

crates/clusters/src/lib.rs

@@ -73,6 +73,10 @@ pub fn persistence_args_from_cluster_url(
                 .append_pair("verify_ca", "false");
         },
         DbDriverTag::Sqlite => anyhow::bail!("no url for sqlite"),
+        #[cfg(any(test, feature = "testing"))]
+        DbDriverTag::TestPersistence => {
+            anyhow::bail!("no url for test persistence")
+        },
     };
     Ok(PersistenceArgs {
         url: cluster_url,

crates/local_backend/Cargo.toml

@@ -73,6 +73,7 @@ vector = { path = "../vector" }
 [dev-dependencies]
 application = { path = "../application", features = ["testing"] }
 authentication = { path = "../authentication", features = ["testing"] }
+clusters = { path = "../clusters", features = ["testing"] }
 common = { path = "../common", features = ["testing"] }
 convex_macro = { path = "../convex_macro" }
 database = { path = "../database", features = ["testing"] }
@@ -101,5 +102,32 @@ vector = { path = "../vector", features = ["testing"] }
 anyhow = { workspace = true }
 vergen = { workspace = true, features = ["git", "gitcl"] }
 
+[features]
+testing = [
+    "common/testing",
+    "clusters/testing",
+    "database/testing",
+    "errors/testing",
+    "function_runner/testing",
+    "isolate/testing",
+    "keybroker/testing",
+    "metrics/testing",
+    "model/testing",
+    "mysql/testing",
+    "postgres/testing",
+    "runtime/testing",
+    "search/testing",
+    "storage/testing",
+    "udf/testing",
+    "usage_tracking/testing",
+    "value/testing",
+    "vector/testing",
+    "application/testing",
+    "authentication/testing",
+    "events/testing",
+    "node_executor/testing",
+    "sync/testing",
+]
+
 [lints]
 workspace = true

crates/local_backend/src/persistence.rs

@@ -79,6 +79,12 @@ pub async fn connect_persistence(
             tracing::info!("Connected to MySQL database: {} ", args.db_name);
             persistence
         },
+        #[cfg(any(test, feature = "testing"))]
+        DbDriverTag::TestPersistence => {
+            let persistence = Arc::new(common::testing::TestPersistence::new());
+            tracing::info!("Connected to TestPersistence");
+            persistence
+        },
     };
     Ok(persistence)
 }