feat(routing): Add audit trail for routing (#8188)

Co-authored-by: hyperswitch-bot[bot] <148525504+hyperswitch-bot[bot]@users.noreply.github.com>

crates/api_models/src/routing.rs

@@ -1046,7 +1046,7 @@ pub struct CurrentBlockThreshold {
     pub max_total_count: Option<u64>,
 }
 
-#[derive(serde::Serialize, serde::Deserialize, Debug, Default, Clone, ToSchema)]
+#[derive(serde::Serialize, serde::Deserialize, Debug, Default, Clone, Copy, ToSchema)]
 #[serde(rename_all = "snake_case")]
 pub enum SuccessRateSpecificityLevel {
     #[default]
@@ -1283,3 +1283,247 @@ impl RoutableConnectorChoiceWithBucketName {
         }
     }
 }
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+#[serde(rename_all = "snake_case")]
+pub struct CalSuccessRateConfigEventRequest {
+    pub min_aggregates_size: Option<u32>,
+    pub default_success_rate: Option<f64>,
+    pub specificity_level: SuccessRateSpecificityLevel,
+    pub exploration_percent: Option<f64>,
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+#[serde(rename_all = "snake_case")]
+pub struct CalSuccessRateEventRequest {
+    pub id: String,
+    pub params: String,
+    pub labels: Vec<String>,
+    pub config: Option<CalSuccessRateConfigEventRequest>,
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+#[serde(rename_all = "snake_case")]
+pub struct EliminationRoutingEventBucketConfig {
+    pub bucket_size: Option<u64>,
+    pub bucket_leak_interval_in_secs: Option<u64>,
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+#[serde(rename_all = "snake_case")]
+pub struct EliminationRoutingEventRequest {
+    pub id: String,
+    pub params: String,
+    pub labels: Vec<String>,
+    pub config: Option<EliminationRoutingEventBucketConfig>,
+}
+
+/// API-1 types
+#[derive(Clone, Debug, Serialize, Deserialize)]
+#[serde(rename_all = "snake_case")]
+pub struct CalContractScoreEventRequest {
+    pub id: String,
+    pub params: String,
+    pub labels: Vec<String>,
+    pub config: Option<ContractBasedRoutingConfig>,
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+#[serde(rename_all = "snake_case")]
+pub struct LabelWithScoreEventResponse {
+    pub score: f64,
+    pub label: String,
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+#[serde(rename_all = "snake_case")]
+pub struct CalSuccessRateEventResponse {
+    pub labels_with_score: Vec<LabelWithScoreEventResponse>,
+    pub routing_apporach: RoutingApproach,
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+#[serde(rename_all = "snake_case")]
+pub enum RoutingApproach {
+    Exploitation,
+    Exploration,
+    Elimination,
+    ContractBased,
+    Default,
+}
+
+impl RoutingApproach {
+    pub fn from_decision_engine_approach(approach: &str) -> Self {
+        match approach {
+            "SR_SELECTION_V3_ROUTING" => Self::Exploitation,
+            "SR_V3_HEDGING" => Self::Exploration,
+            _ => Self::Default,
+        }
+    }
+}
+
+impl std::fmt::Display for RoutingApproach {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            Self::Exploitation => write!(f, "Exploitation"),
+            Self::Exploration => write!(f, "Exploration"),
+            Self::Elimination => write!(f, "Elimination"),
+            Self::ContractBased => write!(f, "ContractBased"),
+            Self::Default => write!(f, "Default"),
+        }
+    }
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+#[serde(rename_all = "snake_case")]
+pub struct BucketInformationEventResponse {
+    pub is_eliminated: bool,
+    pub bucket_name: Vec<String>,
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+#[serde(rename_all = "snake_case")]
+pub struct EliminationInformationEventResponse {
+    pub entity: Option<BucketInformationEventResponse>,
+    pub global: Option<BucketInformationEventResponse>,
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+#[serde(rename_all = "snake_case")]
+pub struct LabelWithStatusEliminationEventResponse {
+    pub label: String,
+    pub elimination_information: Option<EliminationInformationEventResponse>,
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+#[serde(rename_all = "snake_case")]
+pub struct EliminationEventResponse {
+    pub labels_with_status: Vec<LabelWithStatusEliminationEventResponse>,
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+#[serde(rename_all = "snake_case")]
+pub struct ScoreDataEventResponse {
+    pub score: f64,
+    pub label: String,
+    pub current_count: u64,
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+#[serde(rename_all = "snake_case")]
+pub struct CalContractScoreEventResponse {
+    pub labels_with_score: Vec<ScoreDataEventResponse>,
+}
+
+#[derive(Clone, Copy, Debug, Serialize, Deserialize)]
+#[serde(rename_all = "snake_case")]
+pub struct CalGlobalSuccessRateConfigEventRequest {
+    pub entity_min_aggregates_size: u32,
+    pub entity_default_success_rate: f64,
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+#[serde(rename_all = "snake_case")]
+pub struct CalGlobalSuccessRateEventRequest {
+    pub entity_id: String,
+    pub entity_params: String,
+    pub entity_labels: Vec<String>,
+    pub global_labels: Vec<String>,
+    pub config: Option<CalGlobalSuccessRateConfigEventRequest>,
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+#[serde(rename_all = "snake_case")]
+pub struct UpdateSuccessRateWindowConfig {
+    pub max_aggregates_size: Option<u32>,
+    pub current_block_threshold: Option<CurrentBlockThreshold>,
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+#[serde(rename_all = "snake_case")]
+pub struct UpdateLabelWithStatusEventRequest {
+    pub label: String,
+    pub status: bool,
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+#[serde(rename_all = "snake_case")]
+pub struct UpdateSuccessRateWindowEventRequest {
+    pub id: String,
+    pub params: String,
+    pub labels_with_status: Vec<UpdateLabelWithStatusEventRequest>,
+    pub config: Option<UpdateSuccessRateWindowConfig>,
+    pub global_labels_with_status: Vec<UpdateLabelWithStatusEventRequest>,
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+#[serde(rename_all = "snake_case")]
+pub struct UpdateSuccessRateWindowEventResponse {
+    pub status: UpdationStatusEventResponse,
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+#[serde(rename_all = "snake_case")]
+pub enum UpdationStatusEventResponse {
+    WindowUpdationSucceeded,
+    WindowUpdationFailed,
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+#[serde(rename_all = "snake_case")]
+pub struct LabelWithBucketNameEventRequest {
+    pub label: String,
+    pub bucket_name: String,
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+#[serde(rename_all = "snake_case")]
+pub struct UpdateEliminationBucketEventRequest {
+    pub id: String,
+    pub params: String,
+    pub labels_with_bucket_name: Vec<LabelWithBucketNameEventRequest>,
+    pub config: Option<EliminationRoutingEventBucketConfig>,
+}
+
+#[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
+#[serde(rename_all = "snake_case")]
+pub struct UpdateEliminationBucketEventResponse {
+    pub status: EliminationUpdationStatusEventResponse,
+}
+
+#[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
+#[serde(rename_all = "snake_case")]
+pub enum EliminationUpdationStatusEventResponse {
+    BucketUpdationSucceeded,
+    BucketUpdationFailed,
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+#[serde(rename_all = "snake_case")]
+pub struct ContractLabelInformationEventRequest {
+    pub label: String,
+    pub target_count: u64,
+    pub target_time: u64,
+    pub current_count: u64,
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+#[serde(rename_all = "snake_case")]
+pub struct UpdateContractRequestEventRequest {
+    pub id: String,
+    pub params: String,
+    pub labels_information: Vec<ContractLabelInformationEventRequest>,
+}
+
+#[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
+#[serde(rename_all = "snake_case")]
+pub struct UpdateContractEventResponse {
+    pub status: ContractUpdationStatusEventResponse,
+}
+
+#[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
+#[serde(rename_all = "snake_case")]
+pub enum ContractUpdationStatusEventResponse {
+    ContractUpdationSucceeded,
+    ContractUpdationFailed,
+}