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download headers to disk and repair instead of connecting each

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Victor Shyba 2019-07-23 15:05:39 -03:00 committed by Lex Berezhny
parent 45fb673e49
commit 8a69ec062e
1 changed files with 14 additions and 14 deletions
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28
lbry/lbry/extras/daemon/Components.py
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@ -132,7 +132,7 @@ class HeadersComponent(Component):
} if progress is not None and progress < 100 else {}
async def fetch_headers_from_s3(self):
local_header_size = self.headers.bytes_size
local_header_size = self.local_header_file_size()
resume_header = {"Range": f"bytes={local_header_size}-"}
async with utils.aiohttp_request('get', self.HEADERS_URL, headers=resume_header) as response:
if response.status == 406 or response.content_length < self.headers.header_size: # our file is bigger
@ -142,17 +142,16 @@ class HeadersComponent(Component):
log.warning("s3 appears to have corrupted header")
return
final_size_after_download = response.content_length + local_header_size
write_mode = "wb"
if local_header_size > 0:
log.info("Resuming download of %i bytes from s3", response.content_length)
while not response.content.at_eof():
max_read = min(self.headers.header_size * 10000, final_size_after_download - self.headers.bytes_size)
chunk = await response.content.readexactly(max_read)
if not await self.headers.connect(len(self.headers), chunk):
log.warning("Error connecting downloaded headers from at %s.", self.headers.height)
return
self._headers_progress_percent = self._round_progress(
self.headers.bytes_size, final_size_after_download
)
write_mode = "a+b"
with open(self.headers_file, write_mode) as fd:
while not response.content.at_eof():
local_header_size += fd.write(await response.content.readany())
self._headers_progress_percent = self._round_progress(
local_header_size, final_size_after_download
)
def local_header_file_size(self) -> int:
if os.path.isfile(self.headers_file):
@ -173,7 +172,7 @@ class HeadersComponent(Component):
if not s3_headers_depth:
return False
local_height = self.headers.height
local_height = self.local_header_file_size() // self.headers.header_size
remote_height = await self.get_downloadable_header_height()
if remote_height is not None:
log.info("remote height: %i, local height: %i", remote_height, local_height)
@ -187,9 +186,8 @@ class HeadersComponent(Component):
if os.path.exists(self.old_file):
log.warning("Moving old headers from %s to %s.", self.old_file, self.headers_file)
os.rename(self.old_file, self.headers_file)
try:
await self.headers.open()
await self.headers.repair()
if await self.should_download_headers_from_s3():
self.is_downloading_headers = True
await self.fetch_headers_from_s3()
@ -197,8 +195,10 @@ class HeadersComponent(Component):
log.error("failed to fetch headers from s3: %s", err)
finally:
self.is_downloading_headers = False
# fixme: workaround, this should happen before download but happens after because headers.connect fail
await self.headers.open()
await self.headers.repair()
await self.headers.close()
async def stop(self):
pass