// Get fetches one or more dependencies and installs.
//
// This includes resolving dependency resolution and re-generating the lock file.
func Get(names []string, installer *repo.Installer, insecure, skipRecursive, strip, stripVendor, nonInteract bool) {
if installer.UseCache {
cache.SystemLock()
}
base := gpath.Basepath()
EnsureGopath()
EnsureVendorDir()
conf := EnsureConfig()
glidefile, err := gpath.Glide()
if err != nil {
msg.Die("Could not find Glide file: %s", err)
}
// Add the packages to the config.
if count, err2 := addPkgsToConfig(conf, names, insecure, nonInteract); err2 != nil {
msg.Die("Failed to get new packages: %s", err2)
} else if count == 0 {
msg.Warn("Nothing to do")
return
}
// Fetch the new packages. Can't resolve versions via installer.Update if
// get is called while the vendor/ directory is empty so we checkout
// everything.
err = installer.Checkout(conf, false)
if err != nil {
msg.Die("Failed to checkout packages: %s", err)
}
// Prior to resolving dependencies we need to start working with a clone
// of the conf because we'll be making real changes to it.
confcopy := conf.Clone()
if !skipRecursive {
// Get all repos and update them.
// TODO: Can we streamline this in any way? The reason that we update all
// of the dependencies is that we need to re-negotiate versions. For example,
// if an existing dependency has the constraint >1.0 and this new package
// adds the constraint <2.0, then this may re-resolve the existing dependency
// to be between 1.0 and 2.0. But changing that dependency may then result
// in that dependency's dependencies changing... so we sorta do the whole
// thing to be safe.
err = installer.Update(confcopy)
if err != nil {
msg.Die("Could not update packages: %s", err)
}
}
// Set Reference
if err := repo.SetReference(confcopy); err != nil {
msg.Err("Failed to set references: %s", err)
}
// VendoredCleanup
// When stripping VCS happens this will happen as well. No need for double
// effort.
if installer.UpdateVendored && !strip {
repo.VendoredCleanup(confcopy)
}
// Write YAML
if err := conf.WriteFile(glidefile); err != nil {
msg.Die("Failed to write glide YAML file: %s", err)
}
if !skipRecursive {
// Write lock
if stripVendor {
confcopy = godep.RemoveGodepSubpackages(confcopy)
}
writeLock(conf, confcopy, base)
} else {
msg.Warn("Skipping lockfile generation because full dependency tree is not being calculated")
}
if strip {
msg.Info("Removing version control data from vendor directory...")
gpath.StripVcs()
}
if stripVendor {
msg.Info("Removing nested vendor and Godeps/_workspace directories...")
err := gpath.StripVendor()
if err != nil {
msg.Err("Unable to strip vendor directories: %s", err)
}
}
}
// Update updates repos and the lock file from the main glide yaml.
func Update(installer *repo.Installer, skipRecursive, strip, stripVendor bool) {
if installer.UseCache {
cache.SystemLock()
}
base := "."
EnsureGopath()
EnsureVendorDir()
conf := EnsureConfig()
// Delete unused packages
if installer.DeleteUnused {
dependency.DeleteUnused(conf)
}
// Try to check out the initial dependencies.
if err := installer.Checkout(conf, false); err != nil {
msg.Die("Failed to do initial checkout of config: %s", err)
}
// Set the versions for the initial dependencies so that resolved dependencies
// are rooted in the correct version of the base.
if err := repo.SetReference(conf); err != nil {
msg.Die("Failed to set initial config references: %s", err)
}
// Prior to resolving dependencies we need to start working with a clone
// of the conf because we'll be making real changes to it.
confcopy := conf.Clone()
if !skipRecursive {
// Get all repos and update them.
err := installer.Update(confcopy)
if err != nil {
msg.Die("Could not update packages: %s", err)
}
// TODO: There is no support here for importing Godeps, GPM, and GB files.
// I think that all we really need to do now is hunt for these files, and then
// roll their version numbers into the config file.
// Set references. There may be no remaining references to set since the
// installer set them as it went to make sure it parsed the right imports
// from the right version of the package.
msg.Info("Setting references for remaining imports")
if err := repo.SetReference(confcopy); err != nil {
msg.Err("Failed to set references: %s (Skip to cleanup)", err)
}
}
// Vendored cleanup
// VendoredCleanup. This should ONLY be run if UpdateVendored was specified.
// When stripping VCS happens this will happen as well. No need for double
// effort.
if installer.UpdateVendored && !strip {
repo.VendoredCleanup(confcopy)
}
// Write glide.yaml (Why? Godeps/GPM/GB?)
// I think we don't need to write a new Glide file because update should not
// change anything important. It will just generate information about
// transative dependencies, all of which belongs exclusively in the lock
// file, not the glide.yaml file.
// TODO(mattfarina): Detect when a new dependency has been added or removed
// from the project. A removed dependency should warn and an added dependency
// should be added to the glide.yaml file. See issue #193.
if stripVendor {
confcopy = godep.RemoveGodepSubpackages(confcopy)
}
if !skipRecursive {
// Write lock
hash, err := conf.Hash()
if err != nil {
msg.Die("Failed to generate config hash. Unable to generate lock file.")
}
lock := cfg.NewLockfile(confcopy.Imports, hash)
wl := true
if gpath.HasLock(base) {
yml, err := ioutil.ReadFile(filepath.Join(base, gpath.LockFile))
if err == nil {
l2, err := cfg.LockfileFromYaml(yml)
if err == nil {
f1, err := l2.Fingerprint()
f2, err2 := lock.Fingerprint()
if err == nil && err2 == nil && f1 == f2 {
wl = false
}
}
}
}
if wl {
if err := lock.WriteFile(filepath.Join(base, gpath.LockFile)); err != nil {
msg.Err("Could not write lock file to %s: %s", base, err)
return
}
} else {
msg.Info("Versions did not change. Skipping glide.lock update.")
}
msg.Info("Project relies on %d dependencies.", len(confcopy.Imports))
} else {
msg.Warn("Skipping lockfile generation because full dependency tree is not being calculated")
}
if strip {
msg.Info("Removing version control data from vendor directory...")
gpath.StripVcs()
}
if stripVendor {
msg.Info("Removing nested vendor and Godeps/_workspace directories...")
err := gpath.StripVendor()
if err != nil {
msg.Err("Unable to strip vendor directories: %s", err)
}
}
}