Details
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Bug
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Resolution: Won't Fix
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Minor
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None
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2.0.3
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Security Level: Public
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None
Description
In 1.x to create a transcoder you would do the following:
from couchbase import Couchbase, FMT_JSON, FMT_MASK, FMT_BYTES
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from couchbase.transcoder import Transcoder
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# We'll define our own flag.
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FMT_ZLIB = (FMT_MASK << 1) & ~FMT_MASK
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#Compress objects before storing them in CB
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class ZlibTranscoder(Transcoder):
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def encode_value(self, value, format):
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converted, flags = super(ZlibTranscoder, self).encode_value(value, format & FMT_MASK)
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if (format & FMT_ZLIB):
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flags |= FMT_ZLIB
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converted = zlib.compress(converted)
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return (converted, flags)
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def decode_value(self, value, flags):
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if (flags & FMT_ZLIB):
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value = zlib.decompress(value)
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flags &= FMT_MASK
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return super(ZlibTranscoder, self).decode_value(value, flags)
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This fails to be interpreted with this error:
Traceback (most recent call last):
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File "/push2cb.py", line 8, in <module>
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from couchbase import Couchbase, FMT_JSON, FMT_MASK, FMT_BYTES
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ImportError: cannot import name FMT_MASK
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The 2.X SDK does not have `FMT_MASK`:
https://github.com/couchbase/couchbase-python-client/blob/master/couchbase/user_constants.py#L22
I suspect the correct constants to use now is FMT_COMMON_MASK?
- It would be good if there is a transcoding example. I have one I can submit if you would like.
- It would be nice to fix the compatibility breakage if we can't we should document it.