feat: .proc_get_config

CHANGELOG.md

@@ -36,6 +36,8 @@ with the `YY.MINOR.MICRO` scheme.
     - `instance.memtx_memory` -> `instance.memtx.memory`
 - New subcommand `picodata config default` for generating contents of the
   config.yaml file with default parameter values.
+- New rpc entrypoint: `.proc_get_config` which returns the effective
+  picodata configuration.
 
 - Change _pico_index table structure.
 - Support index creation with SQL.

src/info.rs

+use crate::config::PicodataConfig;
 use crate::instance::Grade;
 use crate::instance::InstanceId;
 use crate::replicaset::ReplicasetId;
@@ -265,3 +266,12 @@ pub fn proc_runtime_info() -> Result<RuntimeInfo<'static>, Error> {
 
     RuntimeInfo::try_get(node)
 }
+
+////////////////////////////////////////////////////////////////////////////////
+// .proc_get_config
+////////////////////////////////////////////////////////////////////////////////
+
+#[proc]
+pub fn proc_get_config() -> Result<rmpv::Value, Error> {
+    Ok(PicodataConfig::get().parameters_with_sources_as_rmpv())
+}

test/int/test_config_file.py

@@ -71,7 +71,7 @@ instance:
 
     instance.wait_online()
 
-    config = instance.call("pico.config")
+    config = instance.call(".proc_get_config")
     assert config == dict(
         cluster=dict(
             tiers=dict(