If they really need to be text I would use cjson.encode/decode. However, for your use case I would recommend writing the messages out as a Heka protobuf stream and using heka-cat to get at the text representation when you need to.
Trink On Mon, Feb 16, 2015 at 1:05 AM, Djamel F. <[email protected]> wrote: > Here is my use case: > I want to serialize (lua sandbox encoder) the messages flowing through > heka to some readable log files which are sent to a remote server. The > remote server also runs a global heka instance which parses (lua sandbox > decoder) the log files coming from many sources. I know that Heka is able > to forward the messages directly to remote heka instances through TCP, but > I also use the log files for archiving data, so I would rather not use the > TCP forwarding feature for now. > > I want the format of the log files to be pure text and to contains one > message per line (so that we can easily use unix tools like grep), that is > why my encoder escapes carriage returns and other special chars with > string.format("%q", "<my string to escape>") > > I hope this clears up my use case. > What are the other ways of decoding escaped strings you were referring to? > > Thanks. > > > > On 13 February 2015 at 20:04, Michael Trinkala <[email protected]> > wrote: > >> loadstring is disallowed in the sandbox and that is unlikely to change. >> >> There are other ways of decoding it but before we go there what is your >> use case for creating a string suitable to load into the Lua interpreter? >> BTW: raw strings will work properly in a Heka message as-is. >> >> On Fri, Feb 13, 2015 at 2:46 AM, Djamel F. <[email protected]> wrote: >> >>> Hi, >>> >>> I'm working on a lua sandbox encoder & decoder to dump or load a raw >>> string. >>> So I'm using string.format("%q", "<my string to escape>") to escape any >>> special chars in the encoding process. >>> And now I want to do is the opposite in the decoder, I mean unescape the >>> string. >>> So I tried to use the "loadstring" function but it seems heka's lua >>> sandbox don't know this function. >>> >>> Do you know if the "loadstring" lua function is supported? Any other >>> idea to unescape a string without using the "loadstring" function? >>> Thanks. >>> >>> _______________________________________________ >>> Heka mailing list >>> [email protected] >>> https://mail.mozilla.org/listinfo/heka >>> >>> >> >
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