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aliases: Add files unconditionally, to allow for reloads

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Today, if the aliases file does not exist when chasquid starts up, the entire
domain will be skipped from aliases resolution.

That's a bug, as it means we don't perform character and suffix replacements
for known domains, and is also an inconvenience as it forces us to reload the
daemon when adding a file for a known domain.

This patch fixes this by adding them unconditionally, even if the file does
not exist.
This commit is contained in:
Alberto Bertogli
2016-09-25 20:33:54 +01:00
parent 469cbd5d76
commit a5ea6c9ba0
2 changed files with 22 additions and 11 deletions
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12
chasquid.go
View File

@@ -159,12 +159,10 @@ func loadDomain(name, dir string, s *Server, aliasesR *aliases.Resolver) {
}
}
if _, err := os.Stat(dir + "/aliases"); err == nil {
glog.Infof(" adding aliases")
err := aliasesR.AddAliasesFile(name, dir+"/aliases")
if err != nil {
glog.Errorf(" error: %v", err)
}
glog.Infof(" adding aliases")
err := aliasesR.AddAliasesFile(name, dir+"/aliases")
if err != nil {
glog.Errorf(" error: %v", err)
}
}
@@ -276,7 +274,7 @@ func (s *Server) InitQueue(path string, aliasesR *aliases.Resolver,
// Launch the periodic reload of aliases, now that the queue may care
// about them.
go func() {
for range time.Tick(1 * time.Minute) {
for range time.Tick(30 * time.Second) {
err := aliasesR.Reload()
if err != nil {
glog.Errorf("Error reloading aliases: %v")

21
internal/aliases/aliases.go
View File

@@ -173,16 +173,26 @@ func (v *Resolver) AddDomain(domain string) {
}
func (v *Resolver) AddAliasesFile(domain, path string) error {
// We inconditionally add the domain and file on our list.
// Even if the file does not exist now, it may later. This makes it be
// consider when doing Reload.
// Adding it to the domains mean that we will do drop character and suffix
// manipulation even if there are no aliases for it.
v.mu.Lock()
v.files[domain] = append(v.files[domain], path)
v.domains[domain] = true
v.mu.Unlock()
aliases, err := parseFile(domain, path)
if os.IsNotExist(err) {
return nil
}
if err != nil {
return err
}
v.mu.Lock()
v.files[domain] = append(v.files[domain], path)
v.domains[domain] = true
// Add the aliases to the resolver, overriding any previous values.
v.mu.Lock()
for addr, rs := range aliases {
v.aliases[addr] = rs
}
@@ -201,6 +211,9 @@ func (v *Resolver) Reload() error {
for domain, paths := range v.files {
for _, path := range paths {
aliases, err := parseFile(domain, path)
if os.IsNotExist(err) {
continue
}
if err != nil {
return fmt.Errorf("Error parsing %q: %v", path, err)
}