func init() {
var err error
NodeID, err = server.LocalIP()
if err != nil {
log.Fatalf("Failed to determine IP addr: %v", err)
}
}
func LoadConfig() {
var err error
c, err = server.NewConfig("logyard_sieve", Config{})
if err != nil {
log.Fatalf("Unable to load logyard_sieve config; %v", err)
}
log.Info(getConfig().Events)
}
func NewProgressiveRetryer(retryLimit time.Duration) Retryer {
r := new(ProgressiveRetryer)
r.retryLimit = retryLimit
if r.hasRetryLimit() && r.retryLimit <= RESET_AFTER {
log.Fatalf("retryLimit (%v) must be greater than RESET_AFTER (%v)",
r.retryLimit, RESET_AFTER)
}
return r
}
func (m *MultiRegexpMatcher) MustAdd(name string, substring string, re string) {
if oldName, ok := m.substrings[substring]; ok {
log.Fatalf(
"substring %s already added under %s; being added again by %s",
substring, oldName, name)
}
if _, ok := m.regexps[name]; ok {
log.Fatal("already in regexps")
}
m.substrings[substring] = name
m.regexps[name] = regexp.MustCompile(re)
}
func getDockerEvents(retries int) *http.Response {
c := http.Client{}
for attempt := 0; attempt < retries; attempt++ {
res, err := c.Get(events_url)
if err != nil {
if (attempt + 1) == retries {
log.Fatalf("Failed to read from docker daemon; giving up retrying: %v", err)
}
log.Warnf("Docker connection error (%v); retrying after 1 second.", err)
time.Sleep(time.Second)
} else {
return res
}
}
panic("unreachable")
}
func GetLiveDockerContainers(retries int) map[string]bool {
allDockerIds := make(map[string]bool)
var httpResByte []byte
c := http.Client{}
for attempt := 0; attempt < retries; attempt++ {
res, err := c.Get(containers_url)
defer res.Body.Close()
if err != nil {
if (attempt + 1) == retries {
log.Fatalf("Failed to read from docker daemon; giving up retrying: %v", err)
}
log.Warnf("Docker connection error (%v); retrying after 1 second.", err)
time.Sleep(time.Second)
} else {
httpResByte, err = ioutil.ReadAll(res.Body)
if err != nil {
log.Fatal(err)
}
var jsonData []Docker
err = json.Unmarshal([]byte(httpResByte), &jsonData)
if err != nil {
log.Fatal(err)
}
for _, element := range jsonData {
shortenedKey := element.Id[:ID_LENGTH]
allDockerIds[shortenedKey] = true
}
}
}
return allDockerIds
}