handler, readme: allow ContextHandler to load from another context as…

… well, and add request lifecycle to readme
lithdew · May 11, 2020 · b8c55a3 · b8c55a3
1 parent a5d210a
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diff --git a/README.md b/README.md
@@ -2,4 +2,48 @@
 
 [![MIT License](https://img.shields.io/apm/l/atomic-design-ui.svg?)](LICENSE)
 [![go.dev reference](https://img.shields.io/badge/go.dev-reference-007d9c?logo=go&logoColor=white&style=flat-square)](https://pkg.go.dev/github.com/lithdew/flatend)
-[![Discord Chat](https://img.shields.io/discord/697002823123992617)](https://discord.gg/HZEbkeQ)
+[![Discord Chat](https://img.shields.io/discord/697002823123992617)](https://discord.gg/HZEbkeQ)
+
+## Request Lifecycle
+
+```asciidoc
++-------+                       
+|Request|                       
++-------+       -               
+|                               
+v                               
++------------------------------+
+|Negotiate codec for           |
+|decoding input/encoding output|
++------------------------------+
+|                               
+v                               
++--------------------+          
+|Grab                |          
+|1) route parameters |          
+|2) query parameters |          
+|3) header parameters|          
++--------------------+          
+|                               
+v                               
++----------------------+        
+|Decode body parameters|        
+|using codec           |        
++----------------------+        
+|                               
+v                               
++-----------------------------+ 
+|Execute handler w/ parameters| 
++-----------------------------+ 
+|                               
+v                               
++---------------------+         
+|Encode handler output|         
+|using codec          |         
++---------------------+         
+|                               
+v                               
++--------+                      
+|Response|                      
++--------+                      
+```
diff --git a/handler.go b/handler.go
@@ -20,6 +20,7 @@ var (
 	_ http.Handler = (*ContentLengthHandler)(nil)
 	_ http.Handler = (*ContentDecodeHandler)(nil)
 
+	_ ContextLoader = (*ContextHandler)(nil)
 	_ ContextLoader = (*ContentTypeHandler)(nil)
 	_ ContextLoader = (*ContentLengthHandler)(nil)
 	_ ContextLoader = (*ContentDecodeHandler)(nil)
@@ -51,6 +52,13 @@ type ContextHandler struct {
 	}
 }
 
+func (h *ContextHandler) LoadContext(other *Context) {
+	h.Codecs = other.Codecs
+	h.DefaultCodec = other.DefaultCodec
+	h.MinContentLength = other.MinContentLength
+	h.MaxContentLength = other.MaxContentLength
+}
+
 func (h *ContextHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	in := acquireValues()
 	out := acquireValues()