87 lines
2.3 KiB
Python
87 lines
2.3 KiB
Python
# standard imports
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import os
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import logging
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# local imports
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from .base import *
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logg = logging.getLogger(__name__)
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class Attachment(Data):
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"""Processes, serialized and publishes all attachments found in the "attachments" subdirectory of the settings directory.
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:param path: Path to settings directory
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:type path: str
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:param writer: Writer interface receiving the output of the processor
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:type writer: cic.output.OutputWriter
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"""
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def __init__(self, path='.', writer=None):
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super(Attachment, self).__init__()
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self.contents = {}
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self.path = path
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self.writer = writer
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self.attachment_path = os.path.join(self.path, 'attachments')
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def load(self):
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"""Loads attachment data from settings.
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"""
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for s in os.listdir(self.attachment_path):
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fp = os.path.realpath(os.path.join(self.attachment_path, s))
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f = open(fp, 'rb')
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r = f.read()
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f.close()
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z = self.hash(r).hex()
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self.contents[z] = fp
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logg.debug('loaded attachment file {} digest {}'.format(fp, z))
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def start(self):
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"""Initialize attachment settings from template.
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"""
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super(Attachment, self).start()
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os.makedirs(self.attachment_path)
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def get(self, k):
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"""Get a single attachment by the sha256 hash of the content.
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:param k: Content hash
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:type k: str (hex)
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"""
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return self.contents[k]
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def asdict(self):
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"""Output attachment state to dict
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"""
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return self.contents
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def process(self, token_address=None, token_symbol=None, writer=None):
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"""Serialize and publish attachments.
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See cic.processor.Processor.process
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"""
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if writer == None:
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writer = self.writer
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for k in self.contents.keys():
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fp = os.path.join(self.attachment_path, self.contents[k])
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f = open(fp, 'rb')
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v = f.read()
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f.close()
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logg.debug('writing attachment {}'.format(k))
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writer.write(k, v)
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def __str__(self):
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s = ''
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for k in self.contents.keys():
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s += '{} = {}\n'.format(k, self.contents[k]) #self.digests[i].hex(), self.contents[i])
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return s
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