Merge pull request #35 from vapor-community/feature/hopped-el

Add hopped event loop convenience.

README.md

@@ -112,8 +112,18 @@ None of the API calls throw errors. Instead each route returns a successful `Eve
 To use StripeKit with Vapor 4.x, add a simple extension on `Request`.
 ~~~swift
 extension Request {
+    private struct StripeKey: StorageKey {
+        typealias Value = StripeClient
+    }
+
     public var stripe: StripeClient {
-        return StripeClient(httpClient: self.application.client.http, eventLoop: self.eventLoop, apiKey: "STRIPE_API_KEY")
+        if let existing = application.storage[StripeKey.self] {
+            return existing.hopped(to: self.eventLoop)
+        } else {
+            let new = StripeClient(httpClient: self.application.client.http, eventLoop: self.eventLoop, apiKey: "STRIPE_API_KEY")
+            self.application.storage[StripeKey.self] = new
+            return new
+        }
     }
 }
 

Sources/StripeKit/StripeClient.swift

@@ -97,12 +97,14 @@ public final class StripeClient {
     // MARK: - WEBHOOKS
     public var webhookEndpoints: WebhookEndpointRoutes
 
+    var handler: StripeDefaultAPIHandler
+
     /// Returns a StripeClient used to interact with the Stripe APIs.
     /// - Parameter httpClient: An `HTTPClient`used to communicate wiith the Stripe API
     /// - Parameter eventLoop: An `EventLoop` used to return an `EventLoopFuture` on.
     /// - Parameter apiKey: A Stripe API key.
     public init(httpClient: HTTPClient, eventLoop: EventLoop, apiKey: String) {
-        let handler = StripeDefaultAPIHandler(httpClient: httpClient, eventLoop: eventLoop, apiKey: apiKey)
+        handler = StripeDefaultAPIHandler(httpClient: httpClient, eventLoop: eventLoop, apiKey: apiKey)
 
         balances = StripeBalanceRoutes(apiHandler: handler)
         balanceTransactions = StripeBalanceTransactionRoutes(apiHandler: handler)
@@ -180,4 +182,11 @@ public final class StripeClient {
 
         webhookEndpoints = StripeWebhookEndpointRoutes(apiHandler: handler)
     }
+
+    /// Hop to a new eventloop to execute requests on.
+    /// - Parameter eventLoop: The eventloop to execute requests on.
+    public func hopped(to eventLoop: EventLoop) -> StripeClient {
+        handler.eventLoop = eventLoop
+        return self
+    }
 }

Sources/StripeKit/StripeRequest.swift

@@ -38,11 +38,11 @@ extension StripeAPIHandler {
     }
 }
 
-public struct StripeDefaultAPIHandler: StripeAPIHandler {
+struct StripeDefaultAPIHandler: StripeAPIHandler {
     private let httpClient: HTTPClient
     private let apiKey: String
     private let decoder = JSONDecoder()
-    private let eventLoop: EventLoop
+    var eventLoop: EventLoop
 
     init(httpClient: HTTPClient, eventLoop: EventLoop, apiKey: String) {
         self.httpClient = httpClient