restructure

scripts/combine.lua

@@ -0,0 +1,44 @@
+local uuid = require "resty.jit-uuid"
+local cjson = require "cjson"
+uuid.seed()
+
+local file_dir = ngx.var.tmp_file_dir
+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["data"]["images"]
+local combined = file_dir .. "/" .. uuid.generate_v4() .. ".jpeg";
+local len = table.getn(data)
+if len == 0 then
+    ngx.status = 500
+    ngx.log(ngx.ERR, "No images to combine!")
+    return ;
+end
+local origin = {}
+for i = 1, len do
+    ngx.log(ngx.INFO, "COMBINE FILE ->", data[i])
+    origin[i] = file_dir .. "/" .. data[i] .. " "
+end
+-- 从 nginx 变量取
+local convert = ngx.var.convert
+
+if not convert then
+    ngx.status = 500
+    ngx.log(ngx.ERR, "ImageMagick NOT FOUND.")
+    return
+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
+    local file = io.open(combined)
+    local content = file:read("*all")
+    file:close()
+    os.remove(combined)
+    ngx.log(ngx.INFO, "IMAGE COMBINED -> ", combined)
+    ngx.say(content)
+else
+    ngx.status = 500
+    ngx.log(ngx.ERR, "IMAGE COMBINE *FAILED*")
+end