separate image combine logic

scripts/check_file.lua

@@ -0,0 +1,16 @@
+package.path = package.path .. ';<SCRIPT_PATH>/?.lua';
+
+-- https://stackoverflow.com/questions/4990990/check-if-a-file-exists-with-lua
+local function file_exists(name)
+   local f = io.open(name,"r")
+   if f~=nil then io.close(f) return true else return false end
+end
+
+
+local file_to_check = string.match(ngx.var.request_uri, ".*/(.*)")
+local file_dir = ngx.var.tmp_file_dir
+
+local fullpath = file_dir .. "/" .. file_to_check .. ".jpeg";
+
+ngx.say(file_exists(fullpath))
+

scripts/combine.lua

@@ -12,7 +12,10 @@ ngx.req.read_body()
 local req_body = cjson.decode(ngx.req.get_body_data())
 ngx.log(ngx.INFO, 'REQ_BODY -> ', ngx.req.get_body_data())
 local data = req_body["payload"]["images"]
-local combined = file_dir .. "/" .. uuid.generate_v4() .. ".jpeg";
+
+let combined_uuid = uuid.generate_v4()
+local combined = file_dir .. "/" .. combined_uuid .. ".jpeg";
+
 local len = table.getn(data)
 if len == 0 then
     ngx.status = 500
@@ -35,16 +38,19 @@ end
 
 local cmd = convert .. " -append " .. table.concat(origin, " ") .. " " .. combined
 ngx.log(ngx.INFO, 'CMD -> ', cmd)
-local result, _, code = os.execute(cmd)
-if result and code == 0 then
+io.popen(cmd)
 
-    ngx.log(ngx.INFO, "IMAGE COMBINED -> ", combined)
+ngx.say(combined_uuid)
 
-    ngx.log(ngx.INFO, "Upload combined image " .. combined .. " to upyun .")
-
-    upyun_upload.upload(combined)
-
-else
-    ngx.status = 500
-    ngx.log(ngx.ERR, "IMAGE COMBINE *FAILED*")
-end
+-- local result, _, code = os.execute(cmd)
+--
+-- if result and code == 0 then
+--     ngx.log(ngx.INFO, "IMAGE COMBINED -> ", combined)
+--
+--     ngx.log(ngx.INFO, "Upload combined image " .. combined .. " to upyun .")
+--
+--     upyun_upload.upload(combined)
+-- else
+--     ngx.status = 500
+--     ngx.log(ngx.ERR, "IMAGE COMBINE *FAILED*")
+-- end

scripts/upload_combined_image.lua

@@ -0,0 +1,9 @@
+package.path = package.path .. ';<SCRIPT_PATH>/?.lua';
+
+local upyun_upload = require("upyun_upload")
+
+local file_to_upload = string.match(ngx.var.request_uri, ".*/(.*)")
+local file_dir = ngx.var.tmp_file_dir
+local fullpath = file_dir .. "/" .. file_to_upload .. ".jpeg";
+
+upyun_upload.upload(fullpath)