57 lines
1.6 KiB
Lua
57 lines
1.6 KiB
Lua
-- test transfer files over mqtt.
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m_dis={}
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function dispatch(m,t,pl)
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if pl~=nil and m_dis[t] then
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m_dis[t](m,pl)
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end
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end
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function pubfile(m,filename)
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file.close()
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file.open(filename)
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repeat
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local pl=file.read(1024)
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if pl then m:publish("/topic2",pl,0,0) end
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until not pl
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file.close()
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end
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-- payload(json): {"cmd":xxx,"content":xxx}
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function topic1func(m,pl)
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print("get1: "..pl)
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local pack = cjson.decode(pl)
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if pack.content then
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if pack.cmd == "open" then file.open(pack.content,"w+")
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elseif pack.cmd == "write" then file.write(pack.content)
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elseif pack.cmd == "close" then file.close()
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elseif pack.cmd == "remove" then file.remove(pack.content)
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elseif pack.cmd == "run" then dofile(pack.content)
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elseif pack.cmd == "read" then pubfile(m, pack.content)
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end
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end
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end
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m_dis["/topic1"]=topic1func
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-- Lua: mqtt.Client(clientid, keepalive, user, pass)
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m=mqtt.Client()
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m:on("connect",function(m)
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print("connection "..node.heap())
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m:subscribe("/topic1",0,function(m) print("sub done") end)
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end )
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m:on("offline", function(conn)
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print("disconnect to broker...")
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print(node.heap())
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end)
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m:on("message",dispatch )
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-- Lua: mqtt:connect( host, port, secure, auto_reconnect, function(client) )
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m:connect(192.168.18.88,1883,0,1)
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-- usage:
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-- another client(pc) subscribe to /topic2, will receive the test.lua content.
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-- and publish below message to /topic1
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-- {"cmd":"open","content":"test.lua"}
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-- {"cmd":"write","content":"print([[hello world]])\n"}
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-- {"cmd":"write","content":"print(\"hello2 world2\")\n"}
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-- {"cmd":"write","content":"test.lua"}
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-- {"cmd":"run","content":"test.lua"}
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-- {"cmd":"read","content":"test.lua"}
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