1 files changed, 78 insertions, 0 deletions
diff --git a/modules/hook/hook.go b/modules/hook/hook.go
new file mode 100644
index 0000000..4484f47
--- /dev/null
+++ b/modules/hook/hook.go
@@ -0,0 +1,78 @@
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+package hook
+
+import (
+	"net/http"
+
+	"github.com/philippta/flyscrape"
+)
+
+type Module struct {
+	AdaptTransportFn  func(http.RoundTripper) http.RoundTripper
+	ValidateRequestFn func(*flyscrape.Request) bool
+	BuildRequestFn    func(*flyscrape.Request)
+	ReceiveResponseFn func(*flyscrape.Response)
+	ProvisionFn       func(flyscrape.Context)
+	FinalizeFn        func()
+}
+
+func (Module) ModuleInfo() flyscrape.ModuleInfo {
+	return flyscrape.ModuleInfo{
+		ID:  "hook",
+		New: func() flyscrape.Module { return new(Module) },
+	}
+}
+
+func (m Module) AdaptTransport(t http.RoundTripper) http.RoundTripper {
+	if m.AdaptTransportFn == nil {
+		return t
+	}
+	return m.AdaptTransportFn(t)
+}
+
+func (m Module) ValidateRequest(r *flyscrape.Request) bool {
+	if m.ValidateRequestFn == nil {
+		return true
+	}
+	return m.ValidateRequestFn(r)
+}
+
+func (m Module) BuildRequest(r *flyscrape.Request) {
+	if m.BuildRequestFn == nil {
+		return
+	}
+	m.BuildRequestFn(r)
+}
+
+func (m Module) ReceiveResponse(r *flyscrape.Response) {
+	if m.ReceiveResponseFn == nil {
+		return
+	}
+	m.ReceiveResponseFn(r)
+}
+
+func (m Module) Provision(ctx flyscrape.Context) {
+	if m.ProvisionFn == nil {
+		return
+	}
+	m.ProvisionFn(ctx)
+}
+
+func (m Module) Finalize() {
+	if m.FinalizeFn == nil {
+		return
+	}
+	m.FinalizeFn()
+}
+
+var (
+	_ flyscrape.TransportAdapter = Module{}
+	_ flyscrape.RequestValidator = Module{}
+	_ flyscrape.RequestBuilder   = Module{}
+	_ flyscrape.ResponseReceiver = Module{}
+	_ flyscrape.Provisioner      = Module{}
+	_ flyscrape.Finalizer        = Module{}
+)