feat: add routing profile scheduling policies

crates/aether-routing-core/src/validation.rs

@@ -0,0 +1,54 @@
+use std::collections::BTreeSet;
+
+use thiserror::Error;
+
+use crate::model::RoutingGroupConfig;
+use crate::mutations::{validate_header_patch, validate_json_patch_operations};
+use crate::RoutingAction;
+
+#[derive(Debug, Error, Clone, PartialEq, Eq)]
+pub enum RoutingValidationError {
+    #[error("routing rule id is empty")]
+    EmptyRuleId,
+    #[error("duplicate routing rule id: {0}")]
+    DuplicateRuleId(String),
+    #[error("routing model policy selector is empty")]
+    EmptyModelSelector,
+    #[error("invalid mutation action: {0}")]
+    InvalidMutation(String),
+}
+
+pub fn validate_routing_group_config(
+    config: &RoutingGroupConfig,
+) -> Result<(), RoutingValidationError> {
+    let mut rule_ids = BTreeSet::new();
+    for model_policy in &config.model_policies {
+        if model_policy.model.trim().is_empty() {
+            return Err(RoutingValidationError::EmptyModelSelector);
+        }
+    }
+    for rule in &config.rules {
+        if rule.id.trim().is_empty() {
+            return Err(RoutingValidationError::EmptyRuleId);
+        }
+        if !rule_ids.insert(rule.id.clone()) {
+            return Err(RoutingValidationError::DuplicateRuleId(rule.id.clone()));
+        }
+        for action in &rule.actions {
+            match action {
+                RoutingAction::JsonPatchBody { patch } => {
+                    validate_json_patch_operations(patch).map_err(|error| {
+                        RoutingValidationError::InvalidMutation(error.to_string())
+                    })?;
+                }
+                RoutingAction::PatchHeaders { patch } => {
+                    validate_header_patch(patch).map_err(|error| {
+                        RoutingValidationError::InvalidMutation(error.to_string())
+                    })?;
+                }
+                _ => {}
+            }
+        }
+    }
+    Ok(())
+}