moicen
45 lines
1.2 KiB
Lua
45 lines
1.2 KiB
Lua
local uuid = require "resty.jit-uuid"
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local cjson = require "cjson"
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uuid.seed()
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local file_dir = ngx.var.tmp_file_dir
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ngx.req.read_body()
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local req_body = cjson.decode(ngx.req.get_body_data())
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ngx.log(ngx.INFO, 'REQ_BODY -> ', ngx.req.get_body_data())
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local data = req_body["data"]["images"]
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local combined = file_dir .. "/" .. uuid.generate_v4() .. ".jpeg";
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local len = table.getn(data)
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if len == 0 then
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ngx.status = 500
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ngx.log(ngx.ERR, "No images to combine!")
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return ;
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end
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local origin = {}
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for i = 1, len do
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ngx.log(ngx.INFO, "COMBINE FILE ->", data[i])
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origin[i] = file_dir .. "/" .. data[i] .. " "
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end
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-- 从 nginx 变量取
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local convert = ngx.var.convert
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if not convert then
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ngx.status = 500
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ngx.log(ngx.ERR, "ImageMagick NOT FOUND.")
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return
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end
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local cmd = convert .. " -append " .. table.concat(origin, " ") .. " " .. combined
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ngx.log(ngx.INFO, 'CMD -> ', cmd)
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local result, _, code = os.execute(cmd)
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if result and code == 0 then
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local file = io.open(combined)
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local content = file:read("*all")
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file:close()
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os.remove(combined)
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ngx.log(ngx.INFO, "IMAGE COMBINED -> ", combined)
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ngx.say(content)
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else
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ngx.status = 500
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ngx.log(ngx.ERR, "IMAGE COMBINE *FAILED*")
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end
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