[GitHub] [apisix] shuaijinchao commented on a change in pull request #6343: feat(graphql): support http get and post json request

[GitBox <gi...@apache.org>]

shuaijinchao commented on a change in pull request #6343:
URL: https://github.com/apache/apisix/pull/6343#discussion_r807783678



##########
File path: apisix/core/ctx.lua
##########
@@ -36,7 +37,48 @@ local pcall        = pcall
 
 
 local _M = {version = 0.2}
-local GRAPHQL_DEFAULT_MAX_SIZE = 1048576               -- 1MiB
+local GRAPHQL_DEFAULT_MAX_SIZE       = 1048576               -- 1MiB
+local GRAPHQL_REQ_DATA_KEY           = "query"
+local GRAPHQL_REQ_METHOD_HTTP_GET    = "GET"
+local GRAPHQL_REQ_METHOD_HTTP_POST   = "POST"
+local GRAPHQL_REQ_MIME_JSON          = "application/json"
+
+
+local fetch_graphql_data = {
+    [GRAPHQL_REQ_METHOD_HTTP_GET] = function(ctx, max_size)
+        local body = request.get_uri_args(ctx)[GRAPHQL_REQ_DATA_KEY]
+        if not body then
+            return nil, "failed to read graphql data, args[ " ..
+                        GRAPHQL_REQ_DATA_KEY .. "] is nil"
+        end
+
+        return body
+    end,
+
+    [GRAPHQL_REQ_METHOD_HTTP_POST] = function(ctx, max_size)
+        local body, err = request.get_body(max_size, ctx)
+        if not body then
+            return nil, "failed to read graphql data, " .. (err or "request body has zero size")
+        end
+
+        if request.header(nil, "Content-Type") == GRAPHQL_REQ_MIME_JSON then

Review comment:
       Of course, I update it later.




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