Package caller provides a helping hand around runtime.Caller() to look up file, line and name of the calling function. caller caches the results of its lookups and strips the uninteresting prefix from both the caller's location and name.
go get github.com/birkelund/caller
By default, the packge assumes that your project files are located on a path
resembling $GOPATH/src/domain/org/project/(pkg)/module/submodule/file.go. In
that case, use caller.Lookup(n) directly to strip paths down to
module/submodule/file.go.
If that does not fit your project, use caller.NewCallResolver(re *regexp.Regexp) in combination with caller.BuildPathStripper(depth int) to
get a suitable call resolver. depth is the number of subfolders from
$GOPATH/src until the root of your project (e.g.
$GOROOT/src/domain/x/tools/myproject would be a depth of 3).
This package is extracted from the CockroachDB source tree and modified to remove cockroach specific packages.