1.6.0 MtGox v1 placeMarketOrder Null Pointer Exception

[WLJenkins]

Calling app:
https://github.com/aido/AidoATP

Platform:
Win 7 64 bit
JRE - 1.7.0_u13

MtGox acct API enabled, keys, and perms confirmed.

Ask order: 0.002

[timmolter]

Can you try the latest development snapshot? I just ran com.xeiam.xchange.examples.mtgox.v1.service.trade.polling.MarketOrderDemo, and it works for me.

[WLJenkins]

Will do. Thank you. Will update with results.

[WLJenkins]

Recompiled using XChange 1.6.1 devel.

Same traceback. MtGoxPollingTradeService.java:83 placeMarketOrder - NPE.

I wonder if Gox likes to lock API trade activity on accounts without warning. If this is common I might regen my API key.

[carmaa]

Got the same problem here, on OS X 10.8.3 x86_64, running xchange 1.6.0.

java.lang.NullPointerException
  at com.xeiam.xchange.mtgox.v1.service.trade.polling.MtGoxPollingTradeService.placeMarketOrder(MtGoxPollingTradeService.java:84)
  at org.aido.atp.TrendTradingAgent.marketOrder(TrendTradingAgent.java:554)
  at org.aido.atp.TrendTradingAgent.evalAsk(TrendTradingAgent.java:432)
  at org.aido.atp.TrendTradingAgent.run(TrendTradingAgent.java:344)
  at java.lang.Thread.run(Thread.java:722)

[timmolter]

What happens if you guys run this class in XChange: com.xeiam.xchange.examples.mtgox.v1.service.trade.polling.MarketOrderDemo?

(You'll need to use your own MtGox api keys)

[mmazi]

Running MarketOrderDemo (on xchange-1.6.0 git tag) seems to work normally for me. (The order doesn't execute but is automatically cancelled immediately since I have no funds in my account.) If I disable trading for the key through the web interface, I get a reasonable error message.

[mmazi]

Aha, trying to execute a bid with 0.002 BTC value results in NPE. The reason seems to be that mtGoxSuccess.getReturn() is null -- "return" is not present in the returned json.

11:25:35.976 [default] [main] DEBUG si.mazi.rescu.HttpTemplate - Request http status = 200
11:25:35.982 [default] [main] DEBUG si.mazi.rescu.HttpTemplate - Response body: {"result":"error","error":"Order amount is too low","token":"unknown_error"}
Exception in thread "main" java.lang.NullPointerException
at com.xeiam.xchange.mtgox.v1.service.trade.polling.MtGoxPollingTradeService.placeMarketOrder(MtGoxPollingTradeService.java:84)
at com.xeiam.xchange.examples.mtgox.v1.service.trade.polling.MarketOrderDemo.main(MarketOrderDemo.java:61)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:120)

[mmazi]

Fixed this: 39e1608

[timmolter]

nice work!

[carmaa]

Thanks!