* added framework for unit testing against remote real rclone remotes,
added google drive backend
* added parallelism to blobtesting which revealed some races during
PutBlob with WebDAV.
* linter: upgraded to 1.33, disabled some linters
* lint: fixed 'errorlint' errors
This ensures that all error comparisons use errors.Is() or errors.As().
We will be wrapping more errors going forward so it's important that
error checks are not strict everywhere.
Verified that there are no exceptions for errorlint linter which
guarantees that.
* lint: fixed or suppressed wrapcheck errors
* lint: nolintlint and misc cleanups
Co-authored-by: Julio López <julio+gh@kasten.io>
, where blob.Storage.PutBlob gets a list of slices and writes them sequentially
* performance: added gather.Bytes and gather.WriteBuffer
They are similar to bytes.Buffer but instead of managing a single
byte slice, they maintain a list of slices that and when they run out of
space they allocate new fixed-size slice from a free list.
This helps keep memory allocations completely under control regardless
of the size of data written.
* switch from byte slices and bytes.Buffer to gather.Bytes.
This is mostly mechanical, the only cases where it's not involve blob
storage providers, where we leverage the fact that we don't need to
ever concatenate the slices into one and instead we can do gather
writes.
* PR feedback
This is mostly mechanical and changes how loggers are instantiated.
Logger is now associated with a context, passed around all methods,
(most methods had ctx, but had to add it in a few missing places).
By default Kopia does not produce any logs, but it can be overridden,
either locally for a nested context, by calling
ctx = logging.WithLogger(ctx, newLoggerFunc)
To override logs globally, call logging.SetDefaultLogger(newLoggerFunc)
This refactoring allowed removing dependency from Kopia repo
and go-logging library (the CLI still uses it, though).
It is now also possible to have all test methods emit logs using
t.Logf() so that they show up in failure reports, which should make
debugging of test failures suck less.
