Add TLS support

Author: DOBEN

backend-rust/Cargo.lock

@@ -34,7 +34,7 @@ rust_decimal = "1.35"
 iso8601-duration = { version = "0.2", features = ["chrono"] }
 tokio-util = "0.7"
 prometheus-client = "0.22"
-tonic = "0.10.2"
+tonic = { version = "0.10.2", features = ["tls-roots", "tls"]}
 
 # Recommended by SQLx to speed up incremental builds
 [profile.dev.package.sqlx-macros]

backend-rust/Cargo.toml

@@ -178,3 +178,4 @@ cargo sqlx prepare
 ```
 
 This will generate type metadata for the queries in the `.sqlx` folder.
+

backend-rust/README.md

@@ -265,7 +265,6 @@ CREATE TABLE smart_contract_modules(
     deployment_transaction_index
         BIGINT
         NOT NULL,
-    -- TODO: Would be nice to use BYTEA here (should be propagated to the front end).
     -- Embedded schema in the wasm module if present.
     schema TEXT
 );
@@ -280,7 +279,7 @@ CREATE TABLE contracts(
     sub_index
         BIGINT
         NOT NULL,
-    -- TODO: It might be better to use `module_reference_index` which would save storage space but would require more work in inserting/querying by the indexer.
+    -- Note: It might be better to use `module_reference_index` which would save storage space but would require more work in inserting/querying by the indexer.
     -- Module reference of the wasm module.
     module_reference
         CHAR(64)

backend-rust/migrations/0001_initialize.up.sql

@@ -130,7 +130,24 @@ SELECT height FROM blocks ORDER BY height DESC LIMIT 1
     /// Run the service. This future will only stop when signaled by the
     /// `cancel_token`.
     pub async fn run(self, cancel_token: CancellationToken) -> anyhow::Result<()> {
-        let traverse_config = TraverseConfig::new(self.endpoints, self.start_height.into())
+        // Set up endpoints to the node.
+        let mut endpoints_with_schema = Vec::new();
+        for endpoint in self.endpoints {
+            if endpoint
+                .uri()
+                .scheme()
+                .map_or(false, |x| x == &concordium_rust_sdk::v2::Scheme::HTTPS)
+            {
+                let new_endpoint = endpoint
+                    .tls_config(tonic::transport::ClientTlsConfig::new())
+                    .context("Unable to construct TLS configuration for the Concordium node.")?;
+                endpoints_with_schema.push(new_endpoint);
+            } else {
+                endpoints_with_schema.push(endpoint);
+            }
+        }
+
+        let traverse_config = TraverseConfig::new(endpoints_with_schema, self.start_height.into())
             .context("Failed setting up TraverseConfig")?
             .set_max_parallel(self.config.max_parallel_block_preprocessors)
             .set_max_behind(std::time::Duration::from_secs(self.config.node_max_behind));