Failing with "missing metadata.json" message when trying to upload a wheel

[ericpascual]

Trying to upload a wheel which works perfectly in other usages fails with the message:
invalid state: Could not find metadata.json

[NixBiks]

I get the same one. If I try to upload .tar instead then I get

error: not enough values to unpack (expected 2, got 1)

[Mallouly]

still no solution?

[caseyduquettesc]

The issue is in the wheel files. The workaround is to parse the METADATA file as a fallback, using effectively the same strategy as __extract_source

Something like this works for me, but I'm still testing different packages,

    def __extract_wheel(self, zpfile):
        class InfoCmd(object):
            def __init__(self):
                self.metadata = {}

            def __call__(self, target):
                m = json.loads(target.read())
                self.metadata["name"] = m["name"]
                self.metadata["version"] = m["version"]
                self.metadata["requirements"] = set([])
                for reqs in m.get("run_requires", []):
                    self.metadata["requirements"].update(reqs["requires"])

        class BackupInfoCmd(object):
            def __init__(self):
                self.metadata = {}

            def __call__(self, target):
                m = {}
                for line in target.readlines():
                    try:
                        if len(line.split(":")) > 1:
                            k, v = line.split(":", 1)
                            if k.upper().strip() not in m:
                                m[k.upper().strip()] = []
                            m[k.upper().strip()].append(v.strip())
                    except ValueError:
                        logging.exception("Failed to parse line '{}'".format(line))

                self.metadata["name"] = "".join(m["name".upper()])
                self.metadata["version"] = "".join(m["version".upper()])
                self.metadata["requirements"] = set([])
                for r in m.get("Requires-Dist".upper(), []):
                    self.metadata["requirements"].add(r)

        cmd = InfoCmd()
        self.__seek_and_apply(zpfile, "metadata.json", cmd)
        if not cmd.metadata:
            cmd = BackupInfoCmd()
            self.__seek_and_apply(zpfile, "METADATA", cmd)
            if not cmd.metadata:
                raise InvalidState("Could not find metadata.json")
        return cmd.metadata

[jerryvurbl]

i have found the same error, and seems related to #9

[jerryvurbl]

Took @caseyduquettesc proto-patch above and applied it in PR #13
This fixes upload of wheels for me.

[shaypoww]

@jerryvurbl
@caseyduquettesc
With all the changes, I am still getting the "Could not find metadata.json" is there any other workaround for this? Thanks in advance.