chore(process_tracker): use const instead of String for business_status (#4849)

Co-authored-by: SanchithHegde <22217505+SanchithHegde@users.noreply.github.com>

crates/diesel_models/src/process_tracker.rs

@@ -76,8 +76,6 @@ impl ProcessTrackerNew {
     where
         T: Serialize + std::fmt::Debug,
     {
-        const BUSINESS_STATUS_PENDING: &str = "Pending";
-
         let current_time = common_utils::date_time::now();
         Ok(Self {
             id: process_tracker_id.into(),
@@ -91,7 +89,7 @@ impl ProcessTrackerNew {
                 .encode_to_value()
                 .change_context(errors::DatabaseError::Others)
                 .attach_printable("Failed to serialize process tracker tracking data")?,
-            business_status: String::from(BUSINESS_STATUS_PENDING),
+            business_status: String::from(business_status::PENDING),
             status: storage_enums::ProcessTrackerStatus::New,
             event: vec![],
             created_at: current_time,
@@ -227,3 +225,42 @@ mod tests {
         assert_eq!(enum_format, ProcessTrackerRunner::PaymentsSyncWorkflow);
     }
 }
+
+pub mod business_status {
+    /// Indicates that an irrecoverable error occurred during the workflow execution.
+    pub const GLOBAL_FAILURE: &str = "GLOBAL_FAILURE";
+
+    /// Task successfully completed by consumer.
+    /// A task that reaches this status should not be retried (rescheduled for execution) later.
+    pub const COMPLETED_BY_PT: &str = "COMPLETED_BY_PT";
+
+    /// An error occurred during the workflow execution which prevents further execution and
+    /// retries.
+    /// A task that reaches this status should not be retried (rescheduled for execution) later.
+    pub const FAILURE: &str = "FAILURE";
+
+    /// The resource associated with the task was removed, due to which further retries can/should
+    /// not be done.
+    pub const REVOKED: &str = "Revoked";
+
+    /// The task was executed for the maximum possible number of times without a successful outcome.
+    /// A task that reaches this status should not be retried (rescheduled for execution) later.
+    pub const RETRIES_EXCEEDED: &str = "RETRIES_EXCEEDED";
+
+    /// The outgoing webhook was successfully delivered in the initial attempt.
+    /// Further retries of the task are not required.
+    pub const INITIAL_DELIVERY_ATTEMPT_SUCCESSFUL: &str = "INITIAL_DELIVERY_ATTEMPT_SUCCESSFUL";
+
+    /// Indicates that an error occurred during the workflow execution.
+    /// This status is typically set by the workflow error handler.
+    /// A task that reaches this status should not be retried (rescheduled for execution) later.
+    pub const GLOBAL_ERROR: &str = "GLOBAL_ERROR";
+
+    /// The resource associated with the task has been significantly modified since the task was
+    /// created, due to which further retries of the current task are not required.
+    /// A task that reaches this status should not be retried (rescheduled for execution) later.
+    pub const RESOURCE_STATUS_MISMATCH: &str = "RESOURCE_STATUS_MISMATCH";
+
+    /// Business status set for newly created tasks.
+    pub const PENDING: &str = "Pending";
+}

crates/router/src/bin/scheduler.rs

@@ -4,7 +4,7 @@ use std::{collections::HashMap, str::FromStr, sync::Arc};
 use actix_web::{dev::Server, web, Scope};
 use api_models::health_check::SchedulerHealthCheckResponse;
 use common_utils::ext_traits::{OptionExt, StringExt};
-use diesel_models::process_tracker as storage;
+use diesel_models::process_tracker::{self as storage, business_status};
 use error_stack::ResultExt;
 use router::{
     configs::settings::{CmdLineConf, Settings},
@@ -329,10 +329,13 @@ impl ProcessTrackerWorkflows<routes::SessionState> for WorkflowRunner {
                     let status = state
                         .get_db()
                         .as_scheduler()
-                        .finish_process_with_business_status(process, "GLOBAL_FAILURE".to_string())
+                        .finish_process_with_business_status(
+                            process,
+                            business_status::GLOBAL_FAILURE,
+                        )
                         .await;
                     if let Err(err) = status {
-                        logger::error!(%err, "Failed while performing database operation: GLOBAL_FAILURE");
+                        logger::error!(%err, "Failed while performing database operation: {}", business_status::GLOBAL_FAILURE);
                     }
                 }
             },

crates/router/src/core/api_keys.rs

@@ -381,7 +381,9 @@ pub async fn update_api_key_expiry_task(
         retry_count: Some(0),
         schedule_time,
         tracking_data: Some(updated_api_key_expiry_workflow_model),
-        business_status: Some("Pending".to_string()),
+        business_status: Some(String::from(
+            diesel_models::process_tracker::business_status::PENDING,
+        )),
         status: Some(storage_enums::ProcessTrackerStatus::New),
         updated_at: Some(current_time),
     };
@@ -450,7 +452,7 @@ pub async fn revoke_api_key_expiry_task(
     let task_ids = vec![task_id];
     let updated_process_tracker_data = storage::ProcessTrackerUpdate::StatusUpdate {
         status: storage_enums::ProcessTrackerStatus::Finish,
-        business_status: Some("Revoked".to_string()),
+        business_status: Some(String::from(diesel_models::business_status::REVOKED)),
     };
 
     store

crates/router/src/core/payment_methods/vault.rs

@@ -1178,7 +1178,7 @@ pub async fn start_tokenize_data_workflow(
             db.as_scheduler()
                 .finish_process_with_business_status(
                     tokenize_tracker.clone(),
-                    "COMPLETED_BY_PT".to_string(),
+                    diesel_models::process_tracker::business_status::COMPLETED_BY_PT,
                 )
                 .await?;
         }
@@ -1241,7 +1241,10 @@ pub async fn retry_delete_tokenize(
         }
         None => db
             .as_scheduler()
-            .finish_process_with_business_status(pt, "RETRIES_EXCEEDED".to_string())
+            .finish_process_with_business_status(
+                pt,
+                diesel_models::process_tracker::business_status::RETRIES_EXCEEDED,
+            )
             .await
             .map_err(Into::into),
     }

crates/router/src/core/refunds.rs

@@ -9,6 +9,7 @@ use common_utils::{
     ext_traits::{AsyncExt, ValueExt},
     types::MinorUnit,
 };
+use diesel_models::process_tracker::business_status;
 use error_stack::{report, ResultExt};
 use masking::PeekInterface;
 use router_env::{instrument, tracing};
@@ -1028,7 +1029,7 @@ pub async fn sync_refund_with_gateway_workflow(
                 .as_scheduler()
                 .finish_process_with_business_status(
                     refund_tracker.clone(),
-                    "COMPLETED_BY_PT".to_string(),
+                    business_status::COMPLETED_BY_PT,
                 )
                 .await?
         }
@@ -1193,7 +1194,7 @@ pub async fn trigger_refund_execute_workflow(
             db.as_scheduler()
                 .finish_process_with_business_status(
                     refund_tracker.clone(),
-                    "COMPLETED_BY_PT".to_string(),
+                    business_status::COMPLETED_BY_PT,
                 )
                 .await?;
         }

crates/router/src/core/webhooks/outgoing.rs

@@ -3,6 +3,7 @@ use api_models::{
     webhooks,
 };
 use common_utils::{ext_traits::Encode, request::RequestContent};
+use diesel_models::process_tracker::business_status;
 use error_stack::{report, ResultExt};
 use masking::{ExposeInterface, Mask, PeekInterface, Secret};
 use router_env::{
@@ -231,7 +232,7 @@ async fn trigger_webhook_to_merchant(
                 state
                     .store
                     .as_scheduler()
-                    .finish_process_with_business_status(process_tracker, "FAILURE".into())
+                    .finish_process_with_business_status(process_tracker, business_status::FAILURE)
                     .await
                     .change_context(
                         errors::WebhooksFlowError::OutgoingWebhookProcessTrackerTaskUpdateFailed,
@@ -304,7 +305,7 @@ async fn trigger_webhook_to_merchant(
                         state.clone(),
                         &business_profile.merchant_id,
                         process_tracker,
-                        "INITIAL_DELIVERY_ATTEMPT_SUCCESSFUL",
+                        business_status::INITIAL_DELIVERY_ATTEMPT_SUCCESSFUL,
                     )
                     .await?;
                 } else {
@@ -769,7 +770,7 @@ async fn success_response_handler(
         Some(process_tracker) => state
             .store
             .as_scheduler()
-            .finish_process_with_business_status(process_tracker, business_status.into())
+            .finish_process_with_business_status(process_tracker, business_status)
             .await
             .change_context(
                 errors::WebhooksFlowError::OutgoingWebhookProcessTrackerTaskUpdateFailed,

crates/router/src/db/kafka_store.rs

@@ -1821,7 +1821,7 @@ impl ProcessTrackerInterface for KafkaStore {
     async fn finish_process_with_business_status(
         &self,
         this: storage::ProcessTracker,
-        business_status: String,
+        business_status: &'static str,
     ) -> CustomResult<(), errors::StorageError> {
         self.diesel_store
             .finish_process_with_business_status(this, business_status)

crates/router/src/types/storage.rs

@@ -40,7 +40,8 @@ pub mod user_role;
 use std::collections::HashMap;
 
 pub use diesel_models::{
-    ProcessTracker, ProcessTrackerNew, ProcessTrackerRunner, ProcessTrackerUpdate,
+    process_tracker::business_status, ProcessTracker, ProcessTrackerNew, ProcessTrackerRunner,
+    ProcessTrackerUpdate,
 };
 pub use hyperswitch_domain_models::payments::{
     payment_attempt::{PaymentAttempt, PaymentAttemptNew, PaymentAttemptUpdate},

crates/router/src/workflows/api_key_expiry.rs

@@ -1,5 +1,7 @@
 use common_utils::{errors::ValidationError, ext_traits::ValueExt};
-use diesel_models::{enums as storage_enums, ApiKeyExpiryTrackingData};
+use diesel_models::{
+    enums as storage_enums, process_tracker::business_status, ApiKeyExpiryTrackingData,
+};
 use router_env::logger;
 use scheduler::{workflows::ProcessTrackerWorkflow, SchedulerSessionState};
 
@@ -96,7 +98,7 @@ impl ProcessTrackerWorkflow<SessionState> for ApiKeyExpiryWorkflow {
             state
                 .get_db()
                 .as_scheduler()
-                .finish_process_with_business_status(process, "COMPLETED_BY_PT".to_string())
+                .finish_process_with_business_status(process, business_status::COMPLETED_BY_PT)
                 .await?
         }
         // If tasks are remaining that has to be scheduled

crates/router/src/workflows/outgoing_webhook_retry.rs

@@ -6,6 +6,7 @@ use api_models::{
     webhooks::{OutgoingWebhook, OutgoingWebhookContent},
 };
 use common_utils::ext_traits::{StringExt, ValueExt};
+use diesel_models::process_tracker::business_status;
 use error_stack::ResultExt;
 use masking::PeekInterface;
 use router_env::tracing::{self, instrument};
@@ -197,7 +198,7 @@ impl ProcessTrackerWorkflow<SessionState> for OutgoingWebhookRetryWorkflow {
                         db.as_scheduler()
                             .finish_process_with_business_status(
                                 process.clone(),
-                                "RESOURCE_STATUS_MISMATCH".to_string(),
+                                business_status::RESOURCE_STATUS_MISMATCH,
                             )
                             .await?;
                     }
@@ -309,7 +310,7 @@ pub(crate) async fn retry_webhook_delivery_task(
         }
         None => {
             db.as_scheduler()
-                .finish_process_with_business_status(process, "RETRIES_EXCEEDED".to_string())
+                .finish_process_with_business_status(process, business_status::RETRIES_EXCEEDED)
                 .await
         }
     }

crates/router/src/workflows/payment_sync.rs

@@ -1,4 +1,5 @@
 use common_utils::ext_traits::{OptionExt, StringExt, ValueExt};
+use diesel_models::process_tracker::business_status;
 use error_stack::ResultExt;
 use router_env::logger;
 use scheduler::{
@@ -89,7 +90,7 @@ impl ProcessTrackerWorkflow<SessionState> for PaymentsSyncWorkflow {
                 state
                     .store
                     .as_scheduler()
-                    .finish_process_with_business_status(process, "COMPLETED_BY_PT".to_string())
+                    .finish_process_with_business_status(process, business_status::COMPLETED_BY_PT)
                     .await?
             }
             _ => {
@@ -269,7 +270,7 @@ pub async fn retry_sync_task(
         }
         None => {
             db.as_scheduler()
-                .finish_process_with_business_status(pt, "RETRIES_EXCEEDED".to_string())
+                .finish_process_with_business_status(pt, business_status::RETRIES_EXCEEDED)
                 .await?;
             Ok(true)
         }

crates/scheduler/src/consumer.rs

@@ -30,7 +30,7 @@ use crate::{
 
 // Valid consumer business statuses
 pub fn valid_business_statuses() -> Vec<&'static str> {
-    vec!["Pending"]
+    vec![storage::business_status::PENDING]
 }
 
 #[instrument(skip_all)]
@@ -262,7 +262,7 @@ pub async fn consumer_error_handler(
             vec![process.id],
             storage::ProcessTrackerUpdate::StatusUpdate {
                 status: enums::ProcessTrackerStatus::Finish,
-                business_status: Some("GLOBAL_ERROR".to_string()),
+                business_status: Some(String::from(storage::business_status::GLOBAL_ERROR)),
             },
         )
         .await

crates/scheduler/src/consumer/workflows.rs

@@ -1,6 +1,7 @@
 use async_trait::async_trait;
 use common_utils::errors::CustomResult;
 pub use diesel_models::process_tracker as storage;
+use diesel_models::process_tracker::business_status;
 use router_env::logger;
 
 use crate::{errors, SchedulerSessionState};
@@ -45,7 +46,10 @@ pub trait ProcessTrackerWorkflows<T>: Send + Sync {
                     let status = app_state
                         .get_db()
                         .as_scheduler()
-                        .finish_process_with_business_status(process, "GLOBAL_FAILURE".to_string())
+                        .finish_process_with_business_status(
+                            process,
+                            business_status::GLOBAL_FAILURE,
+                        )
                         .await;
                     if let Err(error) = status {
                         logger::error!(?error, "Failed to update process business status");

crates/scheduler/src/db/process_tracker.rs

@@ -52,7 +52,7 @@ pub trait ProcessTrackerInterface: Send + Sync + 'static {
     async fn finish_process_with_business_status(
         &self,
         this: storage::ProcessTracker,
-        business_status: String,
+        business_status: &'static str,
     ) -> CustomResult<(), errors::StorageError>;
 
     async fn find_processes_by_time_status(
@@ -166,13 +166,13 @@ impl ProcessTrackerInterface for Store {
     async fn finish_process_with_business_status(
         &self,
         this: storage::ProcessTracker,
-        business_status: String,
+        business_status: &'static str,
     ) -> CustomResult<(), errors::StorageError> {
         self.update_process(
             this,
             storage::ProcessTrackerUpdate::StatusUpdate {
                 status: storage_enums::ProcessTrackerStatus::Finish,
-                business_status: Some(business_status),
+                business_status: Some(String::from(business_status)),
             },
         )
         .await
@@ -284,7 +284,7 @@ impl ProcessTrackerInterface for MockDb {
     async fn finish_process_with_business_status(
         &self,
         _this: storage::ProcessTracker,
-        _business_status: String,
+        _business_status: &'static str,
     ) -> CustomResult<(), errors::StorageError> {
         // [#172]: Implement function for `MockDb`
         Err(errors::StorageError::MockDbError)?