Issue:
Bug: feat: Add connectors param to the get_headers method



Allow `ConnectorIntegration::get_headers()` to accept `connectors` parameter so that we can set `Host` headers.

requirement came for `Cybersource` #154 

Pull request description:
## Type of Change
<!-- Put an `x` in the boxes that apply -->

- [ ] Bugfix
- [ ] New feature
- [ ] Enhancement
- [x] Refactoring
- [ ] Dependency updates

## Description
<!-- Describe your changes in detail -->
Some connectors requires endpoint URL and other connector related configs to build headers. To support this build_headers method in API flows have to accept Connectors as an argument.

### Additional Changes

- [ ] This PR modifies the database schema
- [ ] This PR modifies application configuration/environment variables

<!-- 
Provide links to the files with corresponding changes.

Following are the paths where you can find config files:
1. `config`
2. `crates/router/src/configs`
3. `loadtest/config`
-->


## Motivation and Context
<!--
Why is this change required? What problem does it solve?
If it fixes an open issue, please link to the issue here.

If you don't have an issue, we'd recommend starting with one first so the PR
can focus on the implementation (unless its an obvious bug or documentation fix
that will have little conversation).
-->
Every connector generally uses different methods of authorisation and building headers. To support diverse connectors we may need the entire Connector configuration while building headers. This change ensures that all the configs will be available while building the header using build_headers method.


## How did you test it?
<!--
Did you write an integration/unit/API test to verify the code changes?
Or did you test this change manually (provide relevant screenshots)?
-->
cargo test --package router --test connectors -- shift4 
![Screenshot 2022-12-30 at 7 10 55 PM](https://user-images.githubusercontent.com/20727986/210076872-95152336-13b1-45f9-b01f-c0d167e45e35.png)


## Checklist
<!-- Put an `x` in the boxes that apply -->

- [x] I formatted the code `cargo +nightly fmt`
- [x] I addressed lints thrown by `cargo clippy`
- [x] I reviewed submitted code
- [ ] I added unit tests for my changes where possible
- [ ] I added a [CHANGELOG](/CHANGELOG.md) entry if applicable


Testing:

cargo test --package router --test connectors -- shift4 
![Screenshot 2022-12-30 at 7 10 55 PM](https://user-images.githubusercontent.com/20727986/210076872-95152336-13b1-45f9-b01f-c0d167e45e35.png)

Patch:
diff --git a/crates/router/src/connector/aci.rs b/crates/router/src/connector/aci.rs
index 5b7569e9c69..eae5292ace5 100644
--- a/crates/router/src/connector/aci.rs
+++ b/crates/router/src/connector/aci.rs
@@ -92,6 +92,7 @@ impl
     fn get_headers(
         &self,
         req: &types::PaymentsSyncRouterData,
+        _connectors: &settings::Connectors,
     ) -> CustomResult<Vec<(String, String)>, errors::ConnectorError> {
         let mut header = vec![
             (
@@ -137,7 +138,7 @@ impl
             services::RequestBuilder::new()
                 .method(services::Method::Get)
                 .url(&types::PaymentsSyncType::get_url(self, req, connectors)?)
-                .headers(types::PaymentsSyncType::get_headers(self, req)?)
+                .headers(types::PaymentsSyncType::get_headers(self, req, connectors)?)
                 .body(types::PaymentsSyncType::get_request_body(self, req)?)
                 .build(),
         ))
@@ -196,6 +197,7 @@ impl
     fn get_headers(
         &self,
         req: &types::PaymentsAuthorizeRouterData,
+        _connectors: &settings::Connectors,
     ) -> CustomResult<Vec<(String, String)>, errors::ConnectorError> {
         let mut header = vec![
             (
@@ -247,7 +249,9 @@ impl
                 .url(&types::PaymentsAuthorizeType::get_url(
                     self, req, connectors,
                 )?)
-                .headers(types::PaymentsAuthorizeType::get_headers(self, req)?)
+                .headers(types::PaymentsAuthorizeType::get_headers(
+                    self, req, connectors,
+                )?)
                 .header(headers::X_ROUTER, "test")
                 .body(types::PaymentsAuthorizeType::get_request_body(self, req)?)
                 .build(),
@@ -303,6 +307,7 @@ impl
     fn get_headers(
         &self,
         req: &types::PaymentsCancelRouterData,
+        _connectors: &settings::Connectors,
     ) -> CustomResult<Vec<(String, String)>, errors::ConnectorError> {
         let mut header = vec![
             (
@@ -346,7 +351,7 @@ impl
             services::RequestBuilder::new()
                 .method(services::Method::Post)
                 .url(&types::PaymentsVoidType::get_url(self, req, connectors)?)
-                .headers(types::PaymentsVoidType::get_headers(self, req)?)
+                .headers(types::PaymentsVoidType::get_headers(self, req, connectors)?)
                 .body(types::PaymentsVoidType::get_request_body(self, req)?)
                 .build(),
         ))
@@ -401,6 +406,7 @@ impl services::ConnectorIntegration<api::Execute, types::RefundsData, types::Ref
     fn get_headers(
         &self,
         req: &types::RefundsRouterData<api::Execute>,
+        _connectors: &settings::Connectors,
     ) -> CustomResult<Vec<(String, String)>, errors::ConnectorError> {
         let mut header = vec![
             (
@@ -449,7 +455,9 @@ impl services::ConnectorIntegration<api::Execute, types::RefundsData, types::Ref
             services::RequestBuilder::new()
                 .method(services::Method::Post)
                 .url(&types::RefundExecuteType::get_url(self, req, connectors)?)
-                .headers(types::RefundExecuteType::get_headers(self, req)?)
+                .headers(types::RefundExecuteType::get_headers(
+                    self, req, connectors,
+                )?)
                 .body(types::RefundExecuteType::get_request_body(self, req)?)
                 .build(),
         ))
diff --git a/crates/router/src/connector/adyen.rs b/crates/router/src/connector/adyen.rs
index b3267138a3b..c281e2c2b25 100644
--- a/crates/router/src/connector/adyen.rs
+++ b/crates/router/src/connector/adyen.rs
@@ -91,6 +91,7 @@ impl
     fn get_headers(
         &self,
         req: &types::RouterData<api::PSync, types::PaymentsSyncData, types::PaymentsResponseData>,
+        _connectors: &settings::Connectors,
     ) -> CustomResult<Vec<(String, String)>, errors::ConnectorError> {
         let mut header = vec![
             (
@@ -171,7 +172,7 @@ impl
             services::RequestBuilder::new()
                 .method(services::Method::Post)
                 .url(&types::PaymentsSyncType::get_url(self, req, connectors)?)
-                .headers(types::PaymentsSyncType::get_headers(self, req)?)
+                .headers(types::PaymentsSyncType::get_headers(self, req, connectors)?)
                 .header(headers::X_ROUTER, "test")
                 .body(types::PaymentsSyncType::get_request_body(self, req)?)
                 .build(),
@@ -222,6 +223,7 @@ impl
     fn get_headers(
         &self,
         req: &types::PaymentsAuthorizeRouterData,
+        _connectors: &settings::Connectors,
     ) -> CustomResult<Vec<(String, String)>, errors::ConnectorError>
     where
         Self: services::ConnectorIntegration<
@@ -274,7 +276,9 @@ impl
                 .url(&types::PaymentsAuthorizeType::get_url(
                     self, req, connectors,
                 )?)
-                .headers(types::PaymentsAuthorizeType::get_headers(self, req)?)
+                .headers(types::PaymentsAuthorizeType::get_headers(
+                    self, req, connectors,
+                )?)
                 .header(headers::X_ROUTER, "test")
                 .body(types::PaymentsAuthorizeType::get_request_body(self, req)?)
                 .build(),
@@ -324,6 +328,7 @@ impl
     fn get_headers(
         &self,
         req: &types::PaymentsCancelRouterData,
+        _connectors: &settings::Connectors,
     ) -> CustomResult<Vec<(String, String)>, errors::ConnectorError> {
         let mut header = vec![
             (
@@ -362,7 +367,7 @@ impl
             services::RequestBuilder::new()
                 .method(services::Method::Post)
                 .url(&types::PaymentsVoidType::get_url(self, req, connectors)?)
-                .headers(types::PaymentsVoidType::get_headers(self, req)?)
+                .headers(types::PaymentsVoidType::get_headers(self, req, connectors)?)
                 .header(headers::X_ROUTER, "test")
                 .body(types::PaymentsVoidType::get_request_body(self, req)?)
                 .build(),
@@ -412,6 +417,7 @@ impl services::ConnectorIntegration<api::Execute, types::RefundsData, types::Ref
     fn get_headers(
         &self,
         req: &types::RefundsRouterData<api::Execute>,
+        _connectors: &settings::Connectors,
     ) -> CustomResult<Vec<(String, String)>, errors::ConnectorError> {
         let mut header = vec![
             (
@@ -456,7 +462,9 @@ impl services::ConnectorIntegration<api::Execute, types::RefundsData, types::Ref
             services::RequestBuilder::new()
                 .method(services::Method::Post)
                 .url(&types::RefundExecuteType::get_url(self, req, connectors)?)
-                .headers(types::RefundExecuteType::get_headers(self, req)?)
+                .headers(types::RefundExecuteType::get_headers(
+                    self, req, connectors,
+                )?)
                 .body(types::RefundExecuteType::get_request_body(self, req)?)
                 .build(),
         ))
diff --git a/crates/router/src/connector/applepay.rs b/crates/router/src/connector/applepay.rs
index 28ea11130d0..7d83716b917 100644
--- a/crates/router/src/connector/applepay.rs
+++ b/crates/router/src/connector/applepay.rs
@@ -92,6 +92,7 @@ impl
     fn get_headers(
         &self,
         _req: &types::PaymentsSessionRouterData,
+        _connectors: &settings::Connectors,
     ) -> CustomResult<Vec<(String, String)>, errors::ConnectorError> {
         let header = vec![(
             headers::CONTENT_TYPE.to_string(),
@@ -129,7 +130,9 @@ impl
         let request = services::RequestBuilder::new()
             .method(services::Method::Post)
             .url(&types::PaymentsSessionType::get_url(self, req, connectors)?)
-            .headers(types::PaymentsSessionType::get_headers(self, req)?)
+            .headers(types::PaymentsSessionType::get_headers(
+                self, req, connectors,
+            )?)
             .body(types::PaymentsSessionType::get_request_body(self, req)?)
             .add_certificate(types::PaymentsSessionType::get_certificate(self, req)?)
             .add_certificate_key(types::PaymentsSessionType::get_certificate_key(self, req)?)
diff --git a/crates/router/src/connector/authorizedotnet.rs b/crates/router/src/connector/authorizedotnet.rs
index ee6c82e3ac5..1090ddb61ce 100644
--- a/crates/router/src/connector/authorizedotnet.rs
+++ b/crates/router/src/connector/authorizedotnet.rs
@@ -83,6 +83,7 @@ impl
     fn get_headers(
         &self,
         _req: &types::PaymentsSyncRouterData,
+        _connectors: &settings::Connectors,
     ) -> CustomResult<Vec<(String, String)>, errors::ConnectorError> {
         // This connector does not require an auth header, the authentication details are sent in the request body
         Ok(vec![
@@ -126,7 +127,7 @@ impl
         let request = services::RequestBuilder::new()
             .method(services::Method::Post)
             .url(&types::PaymentsSyncType::get_url(self, req, connectors)?)
-            .headers(types::PaymentsSyncType::get_headers(self, req)?)
+            .headers(types::PaymentsSyncType::get_headers(self, req, connectors)?)
             .body(types::PaymentsSyncType::get_request_body(self, req)?)
             .build();
         Ok(Some(request))
@@ -175,6 +176,7 @@ impl
     fn get_headers(
         &self,
         _req: &types::PaymentsAuthorizeRouterData,
+        _connectors: &settings::Connectors,
     ) -> CustomResult<Vec<(String, String)>, errors::ConnectorError> {
         // This connector does not require an auth header, the authentication details are sent in the request body
         Ok(vec![
@@ -224,7 +226,9 @@ impl
                 .url(&types::PaymentsAuthorizeType::get_url(
                     self, req, connectors,
                 )?)
-                .headers(types::PaymentsAuthorizeType::get_headers(self, req)?)
+                .headers(types::PaymentsAuthorizeType::get_headers(
+                    self, req, connectors,
+                )?)
                 .header(headers::X_ROUTER, "test")
                 .body(types::PaymentsAuthorizeType::get_request_body(self, req)?)
                 .build(),
@@ -275,6 +279,7 @@ impl
     fn get_headers(
         &self,
         _req: &types::PaymentsCancelRouterData,
+        _connectors: &settings::Connectors,
     ) -> CustomResult<Vec<(String, String)>, errors::ConnectorError> {
         Ok(vec![
             (
@@ -315,7 +320,7 @@ impl
             services::RequestBuilder::new()
                 .method(services::Method::Post)
                 .url(&types::PaymentsVoidType::get_url(self, req, connectors)?)
-                .headers(types::PaymentsVoidType::get_headers(self, req)?)
+                .headers(types::PaymentsVoidType::get_headers(self, req, connectors)?)
                 .header(headers::X_ROUTER, "test")
                 .body(types::PaymentsVoidType::get_request_body(self, req)?)
                 .build(),
@@ -366,6 +371,7 @@ impl services::ConnectorIntegration<api::Execute, types::RefundsData, types::Ref
     fn get_headers(
         &self,
         _req: &types::RefundsRouterData<api::Execute>,
+        _connectors: &settings::Connectors,
     ) -> CustomResult<Vec<(String, String)>, errors::ConnectorError> {
         // This connector does not require an auth header, the authentication details are sent in the request body
         Ok(vec![
@@ -408,7 +414,9 @@ impl services::ConnectorIntegration<api::Execute, types::RefundsData, types::Ref
         let request = services::RequestBuilder::new()
             .method(services::Method::Post)
             .url(&types::RefundExecuteType::get_url(self, req, connectors)?)
-            .headers(types::RefundExecuteType::get_headers(self, req)?)
+            .headers(types::RefundExecuteType::get_headers(
+                self, req, connectors,
+            )?)
             .body(types::RefundExecuteType::get_request_body(self, req)?)
             .build();
         Ok(Some(request))
@@ -455,6 +463,7 @@ impl services::ConnectorIntegration<api::RSync, types::RefundsData, types::Refun
     fn get_headers(
         &self,
         _req: &types::RefundsRouterData<api::RSync>,
+        _connectors: &settings::Connectors,
     ) -> CustomResult<Vec<(String, String)>, errors::ConnectorError> {
         // This connector does not require an auth header, the authentication details are sent in the request body
         Ok(vec![
@@ -498,7 +507,7 @@ impl services::ConnectorIntegration<api::RSync, types::RefundsData, types::Refun
         let request = services::RequestBuilder::new()
             .method(services::Method::Post)
             .url(&types::RefundSyncType::get_url(self, req, connectors)?)
-            .headers(types::RefundSyncType::get_headers(self, req)?)
+            .headers(types::RefundSyncType::get_headers(self, req, connectors)?)
             .body(types::RefundSyncType::get_request_body(self, req)?)
             .build();
         Ok(Some(request))
diff --git a/crates/router/src/connector/braintree.rs b/crates/router/src/connector/braintree.rs
index 6808b9a415c..72a3a217163 100644
--- a/crates/router/src/connector/braintree.rs
+++ b/crates/router/src/connector/braintree.rs
@@ -63,6 +63,7 @@ impl
     fn get_headers(
         &self,
         req: &types::PaymentsSessionRouterData,
+        _connectors: &settings::Connectors,
     ) -> CustomResult<Vec<(String, String)>, errors::ConnectorError> {
         let mut headers = vec![
             (
@@ -105,7 +106,9 @@ impl
             services::RequestBuilder::new()
                 .method(services::Method::Post)
                 .url(&types::PaymentsSessionType::get_url(self, req, connectors)?)
-                .headers(types::PaymentsSessionType::get_headers(self, req)?)
+                .headers(types::PaymentsSessionType::get_headers(
+                    self, req, connectors,
+                )?)
                 .body(types::PaymentsSessionType::get_request_body(self, req)?)
                 .build(),
         );
@@ -191,6 +194,7 @@ impl
     fn get_headers(
         &self,
         req: &types::PaymentsSyncRouterData,
+        _connectors: &settings::Connectors,
     ) -> CustomResult<Vec<(String, String)>, errors::ConnectorError> {
         let mut headers = vec![
             (
@@ -239,7 +243,7 @@ impl
             services::RequestBuilder::new()
                 .method(services::Method::Get)
                 .url(&types::PaymentsSyncType::get_url(self, req, connectors)?)
-                .headers(types::PaymentsSyncType::get_headers(self, req)?)
+                .headers(types::PaymentsSyncType::get_headers(self, req, connectors)?)
                 .body(types::PaymentsSyncType::get_request_body(self, req)?)
                 .build(),
         ))
@@ -296,6 +300,7 @@ impl
     fn get_headers(
         &self,
         req: &types::PaymentsAuthorizeRouterData,
+        _connectors: &settings::Connectors,
     ) -> CustomResult<Vec<(String, String)>, errors::ConnectorError> {
         let mut headers = vec![
             (
@@ -337,7 +342,9 @@ impl
                 .url(&types::PaymentsAuthorizeType::get_url(
                     self, req, connectors,
                 )?)
-                .headers(types::PaymentsAuthorizeType::get_headers(self, req)?)
+                .headers(types::PaymentsAuthorizeType::get_headers(
+                    self, req, connectors,
+                )?)
                 .body(types::PaymentsAuthorizeType::get_request_body(self, req)?)
                 .build(),
         ))
@@ -399,6 +406,7 @@ impl
     fn get_headers(
         &self,
         req: &types::PaymentsCancelRouterData,
+        _connectors: &settings::Connectors,
     ) -> CustomResult<Vec<(String, String)>, errors::ConnectorError> {
         let mut headers = vec![
             (
@@ -442,7 +450,7 @@ impl
             services::RequestBuilder::new()
                 .method(services::Method::Put)
                 .url(&types::PaymentsVoidType::get_url(self, req, connectors)?)
-                .headers(types::PaymentsVoidType::get_headers(self, req)?)
+                .headers(types::PaymentsVoidType::get_headers(self, req, connectors)?)
                 .body(types::PaymentsVoidType::get_request_body(self, req)?)
                 .build(),
         ))
@@ -499,6 +507,7 @@ impl services::ConnectorIntegration<api::Execute, types::RefundsData, types::Ref
     fn get_headers(
         &self,
         req: &types::RefundsRouterData<api::Execute>,
+        _connectors: &settings::Connectors,
     ) -> CustomResult<Vec<(String, String)>, errors::ConnectorError> {
         let mut headers = vec![
             (
@@ -552,7 +561,9 @@ impl services::ConnectorIntegration<api::Execute, types::RefundsData, types::Ref
         let request = services::RequestBuilder::new()
             .method(services::Method::Post)
             .url(&types::RefundExecuteType::get_url(self, req, connectors)?)
-            .headers(types::RefundExecuteType::get_headers(self, req)?)
+            .headers(types::RefundExecuteType::get_headers(
+                self, req, connectors,
+            )?)
             .body(types::RefundExecuteType::get_request_body(self, req)?)
             .build();
         Ok(Some(request))
@@ -592,6 +603,7 @@ impl services::ConnectorIntegration<api::RSync, types::RefundsData, types::Refun
     fn get_headers(
         &self,
         _req: &types::RouterData<api::RSync, types::RefundsData, types::RefundsResponseData>,
+        _connectors: &settings::Connectors,
     ) -> CustomResult<Vec<(String, String)>, errors::ConnectorError> {
         Err(errors::ConnectorError::NotImplemented("braintree".to_string()).into())
     }
diff --git a/crates/router/src/connector/checkout.rs b/crates/router/src/connector/checkout.rs
index 76afcdc2d06..4c0116d6eee 100644
--- a/crates/router/src/connector/checkout.rs
+++ b/crates/router/src/connector/checkout.rs
@@ -96,6 +96,7 @@ impl
     fn get_headers(
         &self,
         req: &types::PaymentsSyncRouterData,
+        _connectors: &settings::Connectors,
     ) -> CustomResult<Vec<(String, String)>, errors::ConnectorError> {
         let mut header = vec![
             (
@@ -134,7 +135,7 @@ impl
             services::RequestBuilder::new()
                 .method(services::Method::Get)
                 .url(&types::PaymentsSyncType::get_url(self, req, connectors)?)
-                .headers(types::PaymentsSyncType::get_headers(self, req)?)
+                .headers(types::PaymentsSyncType::get_headers(self, req, connectors)?)
                 .header(headers::X_ROUTER, "test")
                 .body(types::PaymentsSyncType::get_request_body(self, req)?)
                 .build(),
@@ -195,6 +196,7 @@ impl
     fn get_headers(
         &self,
         req: &types::PaymentsAuthorizeRouterData,
+        _connectors: &settings::Connectors,
     ) -> CustomResult<Vec<(String, String)>, errors::ConnectorError> {
         let mut header = vec![
             (
@@ -239,7 +241,9 @@ impl
                 .url(&types::PaymentsAuthorizeType::get_url(
                     self, req, connectors,
                 )?)
-                .headers(types::PaymentsAuthorizeType::get_headers(self, req)?)
+                .headers(types::PaymentsAuthorizeType::get_headers(
+                    self, req, connectors,
+                )?)
                 .header(headers::X_ROUTER, "test")
                 .body(types::PaymentsAuthorizeType::get_request_body(self, req)?)
                 .build(),
@@ -294,6 +298,7 @@ impl
     fn get_headers(
         &self,
         req: &types::PaymentsCancelRouterData,
+        _connectors: &settings::Connectors,
     ) -> CustomResult<Vec<(String, String)>, errors::ConnectorError> {
         let mut header = vec![
             (
@@ -336,7 +341,7 @@ impl
             services::RequestBuilder::new()
                 .method(services::Method::Post)
                 .url(&types::PaymentsVoidType::get_url(self, req, connectors)?)
-                .headers(types::PaymentsVoidType::get_headers(self, req)?)
+                .headers(types::PaymentsVoidType::get_headers(self, req, connectors)?)
                 .body(types::PaymentsVoidType::get_request_body(self, req)?)
                 .build(),
         ))
@@ -391,6 +396,7 @@ impl services::ConnectorIntegration<api::Execute, types::RefundsData, types::Ref
     fn get_headers(
         &self,
         req: &types::RefundsRouterData<api::Execute>,
+        _connectors: &settings::Connectors,
     ) -> CustomResult<Vec<(String, String)>, errors::ConnectorError> {
         let mut header = vec![
             (
@@ -438,7 +444,9 @@ impl services::ConnectorIntegration<api::Execute, types::RefundsData, types::Ref
         let request = services::RequestBuilder::new()
             .method(services::Method::Post)
             .url(&types::RefundExecuteType::get_url(self, req, connectors)?)
-            .headers(types::RefundExecuteType::get_headers(self, req)?)
+            .headers(types::RefundExecuteType::get_headers(
+                self, req, connectors,
+            )?)
             .body(types::RefundExecuteType::get_request_body(self, req)?)
             .build();
         Ok(Some(request))
@@ -493,6 +501,7 @@ impl services::ConnectorIntegration<api::RSync, types::RefundsData, types::Refun
     fn get_headers(
         &self,
         req: &types::RefundsRouterData<api::RSync>,
+        _connectors: &settings::Connectors,
     ) -> CustomResult<Vec<(String, String)>, errors::ConnectorError> {
         let mut header = vec![
             (
@@ -528,7 +537,7 @@ impl services::ConnectorIntegration<api::RSync, types::RefundsData, types::Refun
             services::RequestBuilder::new()
                 .method(services::Method::Get)
                 .url(&types::RefundSyncType::get_url(self, req, connectors)?)
-                .headers(types::RefundSyncType::get_headers(self, req)?)
+                .headers(types::RefundSyncType::get_headers(self, req, connectors)?)
                 .body(types::RefundSyncType::get_request_body(self, req)?)
                 .build(),
         ))
diff --git a/crates/router/src/connector/cybersource.rs b/crates/router/src/connector/cybersource.rs
index 6bdb1f22a6d..bbd39b39cae 100644
--- a/crates/router/src/connector/cybersource.rs
+++ b/crates/router/src/connector/cybersource.rs
@@ -131,6 +131,7 @@ impl
     fn get_headers(
         &self,
         _req: &types::PaymentsAuthorizeRouterData,
+        _connectors: &settings::Connectors,
     ) -> CustomResult<Vec<(String, String)>, errors::ConnectorError> {
         let headers = vec![
             (
@@ -205,7 +206,9 @@ impl
                         self, req, connectors,
                     )?)
                     .headers(headers)
-                    .headers(types::PaymentsAuthorizeType::get_headers(self, req)?)
+                    .headers(types::PaymentsAuthorizeType::get_headers(
+                        self, req, connectors,
+                    )?)
                     .body(Some(cybersource_req))
                     .build();
 
diff --git a/crates/router/src/connector/klarna.rs b/crates/router/src/connector/klarna.rs
index e400d8b3867..17423a102b0 100644
--- a/crates/router/src/connector/klarna.rs
+++ b/crates/router/src/connector/klarna.rs
@@ -63,6 +63,7 @@ impl
     fn get_headers(
         &self,
         req: &types::PaymentsSessionRouterData,
+        _connectors: &settings::Connectors,
     ) -> CustomResult<Vec<(String, String)>, errors::ConnectorError> {
         let mut header = vec![
             (
@@ -112,7 +113,9 @@ impl
             services::RequestBuilder::new()
                 .method(services::Method::Post)
                 .url(&types::PaymentsSessionType::get_url(self, req, connectors)?)
-                .headers(types::PaymentsSessionType::get_headers(self, req)?)
+                .headers(types::PaymentsSessionType::get_headers(
+                    self, req, connectors,
+                )?)
                 .body(types::PaymentsSessionType::get_request_body(self, req)?)
                 .build(),
         ))
@@ -191,6 +194,7 @@ impl
     fn get_headers(
         &self,
         req: &types::PaymentsAuthorizeRouterData,
+        _connectors: &settings::Connectors,
     ) -> CustomResult<Vec<(String, String)>, errors::ConnectorError> {
         let mut header = vec![
             (
@@ -252,7 +256,9 @@ impl
                 .url(&types::PaymentsAuthorizeType::get_url(
                     self, req, connectors,
                 )?)
-                .headers(types::PaymentsAuthorizeType::get_headers(self, req)?)
+                .headers(types::PaymentsAuthorizeType::get_headers(
+                    self, req, connectors,
+                )?)
                 .body(types::PaymentsAuthorizeType::get_request_body(self, req)?)
                 .build(),
         ))
diff --git a/crates/router/src/connector/shift4.rs b/crates/router/src/connector/shift4.rs
index 4bb8d72d8ab..312a525910a 100644
--- a/crates/router/src/connector/shift4.rs
+++ b/crates/router/src/connector/shift4.rs
@@ -34,6 +34,7 @@ where
     fn build_headers(
         &self,
         req: &types::RouterData<Flow, Request, Response>,
+        _connectors: &settings::Connectors,
     ) -> CustomResult<Vec<(String, String)>, errors::ConnectorError> {
         let mut headers = vec![
             (
@@ -114,8 +115,9 @@ impl ConnectorIntegration<api::PSync, types::PaymentsSyncData, types::PaymentsRe
     fn get_headers(
         &self,
         req: &types::PaymentsSyncRouterData,
+        connectors: &settings::Connectors,
     ) -> CustomResult<Vec<(String, String)>, errors::ConnectorError> {
-        self.build_headers(req)
+        self.build_headers(req, connectors)
     }
 
     fn get_content_type(&self) -> &'static str {
@@ -148,7 +150,7 @@ impl ConnectorIntegration<api::PSync, types::PaymentsSyncData, types::PaymentsRe
             services::RequestBuilder::new()
                 .method(services::Method::Get)
                 .url(&types::PaymentsSyncType::get_url(self, req, connectors)?)
-                .headers(types::PaymentsSyncType::get_headers(self, req)?)
+                .headers(types::PaymentsSyncType::get_headers(self, req, connectors)?)
                 .build(),
         ))
     }
@@ -187,8 +189,9 @@ impl ConnectorIntegration<api::Capture, types::PaymentsCaptureData, types::Payme
     fn get_headers(
         &self,
         req: &types::PaymentsCaptureRouterData,
+        connectors: &settings::Connectors,
     ) -> CustomResult<Vec<(String, String)>, errors::ConnectorError> {
-        self.build_headers(req)
+        self.build_headers(req, connectors)
     }
 
     fn get_content_type(&self) -> &'static str {
@@ -204,7 +207,9 @@ impl ConnectorIntegration<api::Capture, types::PaymentsCaptureData, types::Payme
             services::RequestBuilder::new()
                 .method(services::Method::Post)
                 .url(&types::PaymentsCaptureType::get_url(self, req, connectors)?)
-                .headers(types::PaymentsCaptureType::get_headers(self, req)?)
+                .headers(types::PaymentsCaptureType::get_headers(
+                    self, req, connectors,
+                )?)
                 .build(),
         ))
     }
@@ -265,8 +270,9 @@ impl ConnectorIntegration<api::Authorize, types::PaymentsAuthorizeData, types::P
     fn get_headers(
         &self,
         req: &types::PaymentsAuthorizeRouterData,
+        connectors: &settings::Connectors,
     ) -> CustomResult<Vec<(String, String)>, errors::ConnectorError> {
-        self.build_headers(req)
+        self.build_headers(req, connectors)
     }
 
     fn get_content_type(&self) -> &'static str {
@@ -301,7 +307,9 @@ impl ConnectorIntegration<api::Authorize, types::PaymentsAuthorizeData, types::P
                 .url(&types::PaymentsAuthorizeType::get_url(
                     self, req, connectors,
                 )?)
-                .headers(types::PaymentsAuthorizeType::get_headers(self, req)?)
+                .headers(types::PaymentsAuthorizeType::get_headers(
+                    self, req, connectors,
+                )?)
                 .body(types::PaymentsAuthorizeType::get_request_body(self, req)?)
                 .build(),
         ))
@@ -341,8 +349,9 @@ impl ConnectorIntegration<api::Execute, types::RefundsData, types::RefundsRespon
     fn get_headers(
         &self,
         req: &types::RefundsRouterData<api::Execute>,
+        connectors: &settings::Connectors,
     ) -> CustomResult<Vec<(String, String)>, errors::ConnectorError> {
-        self.build_headers(req)
+        self.build_headers(req, connectors)
     }
 
     fn get_content_type(&self) -> &'static str {
@@ -374,7 +383,9 @@ impl ConnectorIntegration<api::Execute, types::RefundsData, types::RefundsRespon
         let request = services::RequestBuilder::new()
             .method(services::Method::Post)
             .url(&types::RefundExecuteType::get_url(self, req, connectors)?)
-            .headers(types::RefundExecuteType::get_headers(self, req)?)
+            .headers(types::RefundExecuteType::get_headers(
+                self, req, connectors,
+            )?)
             .body(types::RefundExecuteType::get_request_body(self, req)?)
             .build();
         Ok(Some(request))
@@ -411,8 +422,9 @@ impl ConnectorIntegration<api::RSync, types::RefundsData, types::RefundsResponse
     fn get_headers(
         &self,
         req: &types::RefundSyncRouterData,
+        connectors: &settings::Connectors,
     ) -> CustomResult<Vec<(String, String)>, errors::ConnectorError> {
-        self.build_headers(req)
+        self.build_headers(req, connectors)
     }
 
     fn get_content_type(&self) -> &'static str {
diff --git a/crates/router/src/connector/stripe.rs b/crates/router/src/connector/stripe.rs
index 5df5b323d87..86847a4469e 100644
--- a/crates/router/src/connector/stripe.rs
+++ b/crates/router/src/connector/stripe.rs
@@ -81,6 +81,7 @@ impl
     fn get_headers(
         &self,
         req: &types::PaymentsCaptureRouterData,
+        _connectors: &settings::Connectors,
     ) -> CustomResult<Vec<(String, String)>, errors::ConnectorError> {
         let mut header = vec![
             (
@@ -126,14 +127,15 @@ impl
     fn build_request(
         &self,
         req: &types::PaymentsCaptureRouterData,
-
         connectors: &settings::Connectors,
     ) -> CustomResult<Option<services::Request>, errors::ConnectorError> {
         Ok(Some(
             services::RequestBuilder::new()
                 .method(services::Method::Post)
                 .url(&types::PaymentsCaptureType::get_url(self, req, connectors)?)
-                .headers(types::PaymentsCaptureType::get_headers(self, req)?)
+                .headers(types::PaymentsCaptureType::get_headers(
+                    self, req, connectors,
+                )?)
                 .body(types::PaymentsCaptureType::get_request_body(self, req)?)
                 .build(),
         ))
@@ -189,6 +191,7 @@ impl
     fn get_headers(
         &self,
         req: &types::PaymentsSyncRouterData,
+        _connectors: &settings::Connectors,
     ) -> CustomResult<Vec<(String, String)>, errors::ConnectorError> {
         let mut header = vec![
             (
@@ -230,7 +233,7 @@ impl
             services::RequestBuilder::new()
                 .method(services::Method::Get)
                 .url(&types::PaymentsSyncType::get_url(self, req, connectors)?)
-                .headers(types::PaymentsSyncType::get_headers(self, req)?)
+                .headers(types::PaymentsSyncType::get_headers(self, req, connectors)?)
                 .body(types::PaymentsSyncType::get_request_body(self, req)?)
                 .build(),
         ))
@@ -290,6 +293,7 @@ impl
     fn get_headers(
         &self,
         req: &types::PaymentsAuthorizeRouterData,
+        _connectors: &settings::Connectors,
     ) -> CustomResult<Vec<(String, String)>, errors::ConnectorError> {
         let mut header = vec![
             (
@@ -339,7 +343,9 @@ impl
                 .url(&types::PaymentsAuthorizeType::get_url(
                     self, req, connectors,
                 )?)
-                .headers(types::PaymentsAuthorizeType::get_headers(self, req)?)
+                .headers(types::PaymentsAuthorizeType::get_headers(
+                    self, req, connectors,
+                )?)
                 .header(headers::X_ROUTER, "test")
                 .body(types::PaymentsAuthorizeType::get_request_body(self, req)?)
                 .build(),
@@ -396,6 +402,7 @@ impl
     fn get_headers(
         &self,
         req: &types::PaymentsCancelRouterData,
+        _connectors: &settings::Connectors,
     ) -> CustomResult<Vec<(String, String)>, errors::ConnectorError> {
         let mut header = vec![
             (
@@ -445,7 +452,7 @@ impl
         let request = services::RequestBuilder::new()
             .method(services::Method::Post)
             .url(&types::PaymentsVoidType::get_url(self, req, connectors)?)
-            .headers(types::PaymentsVoidType::get_headers(self, req)?)
+            .headers(types::PaymentsVoidType::get_headers(self, req, connectors)?)
             .body(types::PaymentsVoidType::get_request_body(self, req)?)
             .build();
         Ok(Some(request))
@@ -505,6 +512,7 @@ impl
     fn get_headers(
         &self,
         req: &types::RouterData<api::Verify, types::VerifyRequestData, types::PaymentsResponseData>,
+        _connectors: &settings::Connectors,
     ) -> CustomResult<Vec<(String, String)>, errors::ConnectorError> {
         let mut header = vec![
             (
@@ -556,7 +564,7 @@ impl
             services::RequestBuilder::new()
                 .method(services::Method::Post)
                 .url(&Verify::get_url(self, req, connectors)?)
-                .headers(Verify::get_headers(self, req)?)
+                .headers(Verify::get_headers(self, req, connectors)?)
                 .header(headers::X_ROUTER, "test")
                 .body(Verify::get_request_body(self, req)?)
                 .build(),
@@ -624,6 +632,7 @@ impl services::ConnectorIntegration<api::Execute, types::RefundsData, types::Ref
     fn get_headers(
         &self,
         req: &types::RefundsRouterData<api::Execute>,
+        _connectors: &settings::Connectors,
     ) -> CustomResult<Vec<(String, String)>, errors::ConnectorError> {
         let mut header = vec![
             (
@@ -666,7 +675,9 @@ impl services::ConnectorIntegration<api::Execute, types::RefundsData, types::Ref
         let request = services::RequestBuilder::new()
             .method(services::Method::Post)
             .url(&types::RefundExecuteType::get_url(self, req, connectors)?)
-            .headers(types::RefundExecuteType::get_headers(self, req)?)
+            .headers(types::RefundExecuteType::get_headers(
+                self, req, connectors,
+            )?)
             .body(types::RefundExecuteType::get_request_body(self, req)?)
             .build();
         Ok(Some(request))
@@ -719,6 +730,7 @@ impl services::ConnectorIntegration<api::RSync, types::RefundsData, types::Refun
     fn get_headers(
         &self,
         req: &types::RouterData<api::RSync, types::RefundsData, types::RefundsResponseData>,
+        _connectors: &settings::Connectors,
     ) -> CustomResult<Vec<(String, String)>, errors::ConnectorError> {
         let mut header = vec![
             (
@@ -761,7 +773,7 @@ impl services::ConnectorIntegration<api::RSync, types::RefundsData, types::Refun
             services::RequestBuilder::new()
                 .method(services::Method::Post)
                 .url(&types::RefundSyncType::get_url(self, req, connectors)?)
-                .headers(types::RefundSyncType::get_headers(self, req)?)
+                .headers(types::RefundSyncType::get_headers(self, req, connectors)?)
                 .header(headers::X_ROUTER, "test")
                 .body(types::RefundSyncType::get_request_body(self, req)?)
                 .build(),
diff --git a/crates/router/src/services/api.rs b/crates/router/src/services/api.rs
index 52f1af53852..bcb01c6ac44 100644
--- a/crates/router/src/services/api.rs
+++ b/crates/router/src/services/api.rs
@@ -52,6 +52,7 @@ pub trait ConnectorIntegration<T, Req, Resp>: ConnectorIntegrationAny<T, Req, Re
     fn get_headers(
         &self,
         _req: &types::RouterData<T, Req, Resp>,
+        _connectors: &Connectors,
     ) -> CustomResult<Vec<(String, String)>, errors::ConnectorError> {
         Ok(vec![])
     }
diff --git a/crates/router/src/types/api.rs b/crates/router/src/types/api.rs
index e34849fabe6..fb037b1a212 100644
--- a/crates/router/src/types/api.rs
+++ b/crates/router/src/types/api.rs
@@ -67,6 +67,7 @@ pub trait ConnectorCommonExt<Flow, Req, Resp>:
     fn build_headers(
         &self,
         _req: &types::RouterData<Flow, Req, Resp>,
+        _connectors: &Connectors,
     ) -> CustomResult<Vec<(String, String)>, errors::ConnectorError> {
         Ok(Vec::new())
     }