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import os
from buildstream import Source, Consistency, SourceError, SourceFetcher
# Expected config
# sources:
# - output-text: $FILE
# urls:
# - foo:bar
# - baz:quux
# fetch-succeeds:
# Foo/bar: true
# ooF/bar: false
class FetchFetcher(SourceFetcher):
def __init__(self, source, url, primary=False):
super().__init__()
self.source = source
self.original_url = url
self.primary = primary
self.mark_download_url(url)
def fetch(self, alias_override=None):
url = self.source.translate_url(self.original_url,
alias_override=alias_override,
primary=self.primary)
with open(self.source.output_file, "a") as f:
success = url in self.source.fetch_succeeds and self.source.fetch_succeeds[url]
message = "Fetch {} {} from {}\n".format(self.original_url,
"succeeded" if success else "failed",
url)
f.write(message)
if not success:
raise SourceError("Failed to fetch {}".format(url))
class FetchSource(Source):
# Read config to know which URLs to fetch
def configure(self, node):
self.original_urls = node.get_sequence('urls').as_str_list()
self.output_file = node.get_str('output-text')
self.fetch_succeeds = {
key: value.as_bool()
for key, value in node.get_mapping('fetch-succeeds', {}).items()
}
# First URL is the primary one for this test
#
primary = True
self.fetchers = []
for url in self.original_urls:
self.mark_download_url(url, primary=primary)
fetcher = FetchFetcher(self, url, primary=primary)
self.fetchers.append(fetcher)
primary = False
def get_source_fetchers(self):
return self.fetchers
def preflight(self):
output_dir = os.path.dirname(self.output_file)
if not os.path.exists(output_dir):
raise SourceError("Directory '{}' does not exist".format(output_dir))
def stage(self, directory):
pass
def fetch(self):
for fetcher in self.fetchers:
fetcher.fetch()
def get_unique_key(self):
return {"urls": self.original_urls, "output_file": self.output_file}
def get_consistency(self):
if not os.path.exists(self.output_file):
return Consistency.RESOLVED
with open(self.output_file, "r") as f:
contents = f.read()
for url in self.original_urls:
if url not in contents:
return Consistency.RESOLVED
return Consistency.CACHED
# We dont have a ref, we're a local file...
def load_ref(self, node):
pass
def get_ref(self):
return None # pragma: nocover
def set_ref(self, ref, node):
pass # pragma: nocover
def setup():
return FetchSource
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