This health service implements the gRPC Health Checking
Protocol, as defined in
https://github.com/grpc/grpc/blob/master/doc/health-checking.md
and as implemented by the gRPC authors in
https://pkg.go.dev/google.golang.org/grpc/health@v1.29.0
It simply instantiates a health service, and attaches it to the same
gRPC server that is handling requests to the primary (e.g. CA) service.
When the main service would be shut down (e.g. because it caught a
signal), it also sets the status of the service to NOT_SERVING.
This change also imports the health client into our grpc client,
ensuring that all of our grpc clients use the health service to inform
their load-balancing behavior.
This will be used to replace our current usage of polling the debug
port to determine whether a given service is up and running. It may
also be useful for more comprehensive checks and blackbox probing
in the future.
Part of #5074
Consolidate initialization of stats and logging from each main.go into cmd
package.
Define a new config parameter, `StdoutLevel`, that determines the maximum log
level that will be printed to stdout. It can be set to 6 to inhibit debug
messages, or 0 to print only emergency messages, or -1 to print no messages at
all.
Remove the existing config parameter `Tag`. Instead, choose the tag from the
basename of the currently running process. Previously all Boulder log messages
had the tag "boulder", but now they will be differentiated by process, like
"boulder-wfe".
Shorten the date format used in stdout logging, and add the current binary's
basename.
Consolidate setup function in audit-logger_test.go.
Note: Most CLI binaries now get their stats and logging from the parameters of
Action. However, a few of our binaries don't use our custom AppShell, and
instead use codegangsta/cli directly. For those binaries, we export the new
StatsAndLogging method from cmd.
Fixes https://github.com/letsencrypt/boulder/issues/852
Adds a (currently gated) Akamai CCU API client used to purge GET OCSP responses
from the CDN. It also contains a small tool (cmd/akamai-purger) that can be used
to purge ARLs from the command line.
Aaron Gable