Except when there is an explicit os.Exit(1) after the Critical line,
then replace with Fatal{,f}.
golang's log and logrus already call os.Exit(1) by default with Fatal.
License: MIT
Signed-off-by: rht <rhtbot@gmail.com>
Instead of just terminating right there and then, we cancel the
context, and let the daemon exit cleanly. This make take a few
seconds, as the node builder and its child processes do not
care too much about the context state while building nodes,
but this can be improved by injecting checks for ctx.Done()
before time-consuming steps.
Instead of assuming the command is the daemon command and closing
the node, which resulted in bugs like #1053, we cancel the context
and let the context children detect the cancellation and gracefully
clean up after themselves.
The shutdown logging has been moved into the daemon command, where
it makes more sense, so that commands like ping will not print out
the same output on cancellation.
If a command invocation such as 'daemon' is interrupted, the interrupt
handler asks the node to close. The closing of the node will result in
the command invocation finishing, and possibly returning from main()
before the interrupt handler is done. In particular, the info logging
that a graceful shutdown was completed may never reach reach stdout.
As the whole point of logging "Gracefully shut down." is to give
confidence when debugging that the shutdown was clean, this is
slightly unfortunate.
The interrupt handler needs to be set up in main() instead of Run(),
so that we can defer the closing of the interrupt handler until just
before returning from main, not when Run() returns with a streaming
result reader.
This reverts commit f74e71f965.
The 'Online' flag of the command context does not seem to be set in
any code paths, at least not when running commands such as 'ipfs daemon'
or 'ipfs ping'. The result after f74e71f9 is that we never shutdown
cleanly, as we'll always os.Exit(0) from the interrupt handler.
The os.Exit(0) itself is also dubious, as conceptually the interrupt
handler should ask whatever is stalling to stop stalling, so that
main() can return like normal. Exiting with -1 in error cases where
the interrupt handler is unable to stop the stall is fine, but the
normal case of interrupting cleanly should exit through main().
We now consider debugerrors harmful: we've run into cases where
debugerror.Wrap() hid valuable error information (err == io.EOF?).
I've removed them from the main code, but left them in some tests.
Go errors are lacking, but unfortunately, this isn't the solution.
It is possible that debugerros.New or debugerrors.Errorf should
remain still (i.e. only remove debugerrors.Wrap) but we don't use
these errors often enough to keep.
- updated go-ctxgroup and goprocess
ctxgroup: AddChildGroup was changed to AddChild. Used in two files:
- p2p/net/mock/mock_net.go
- routing/dht/dht.go
- updated context from hg repo to git
prev. commit in hg was ad01a6fcc8a19d3a4478c836895ffe883bd2ceab. (context: make parentCancelCtx iterative)
represents commit 84f8955a887232b6308d79c68b8db44f64df455c in git repo
- updated context to master (b6fdb7d8a4ccefede406f8fe0f017fb58265054c)
Aaron Jacobs (2):
net/context: Don't accept a context in the DoSomethingSlow example.
context: Be clear that users must cancel the result of WithCancel.
Andrew Gerrand (1):
go.net: use golang.org/x/... import paths
Bryan C. Mills (1):
net/context: Don't leak goroutines in Done example.
Damien Neil (1):
context: fix removal of cancelled timer contexts from parent
David Symonds (2):
context: Fix WithValue example code.
net: add import comments.
Sameer Ajmani (1):
context: fix TestAllocs to account for ints in interfaces
