traefik/types/common_label.go

package types

import "strings"

// Traefik labels
const (
	LabelPrefix                                   = "traefik."
	SuffixPort                                    = "port"
	SuffixProtocol                                = "protocol"
	SuffixWeight                                  = "weight"
	SuffixFrontendAuthBasic                       = "frontend.auth.basic"
	SuffixFrontendBackend                         = "frontend.backend"
	SuffixFrontendEntryPoints                     = "frontend.entryPoints"
	SuffixFrontendPassHostHeader                  = "frontend.passHostHeader"
	SuffixFrontendPriority                        = "frontend.priority"
	SuffixFrontendRedirectEntryPoint              = "frontend.redirect.entryPoint"
	SuffixFrontendRedirectRegex                   = "frontend.redirect.regex"
	SuffixFrontendRedirectReplacement             = "frontend.redirect.replacement"
	SuffixFrontendRule                            = "frontend.rule"
	SuffixBackendLoadBalancerSticky               = "backend.loadbalancer.sticky"
	SuffixBackendLoadBalancerStickiness           = "backend.loadbalancer.stickiness"
	SuffixBackendLoadBalancerStickinessCookieName = "backend.loadbalancer.stickiness.cookieName"
	LabelDomain                                   = LabelPrefix + "domain"
	LabelEnable                                   = LabelPrefix + "enable"
	LabelPort                                     = LabelPrefix + SuffixPort
	LabelPortIndex                                = LabelPrefix + "portIndex"
	LabelProtocol                                 = LabelPrefix + SuffixProtocol
	LabelTags                                     = LabelPrefix + "tags"
	LabelWeight                                   = LabelPrefix + SuffixWeight
	LabelFrontendAuthBasic                        = LabelPrefix + SuffixFrontendAuthBasic
	LabelFrontendEntryPoints                      = LabelPrefix + SuffixFrontendEntryPoints
	LabelFrontendPassHostHeader                   = LabelPrefix + SuffixFrontendPassHostHeader
	LabelFrontendPassTLSCert                      = LabelPrefix + "frontend.passTLSCert"
	LabelFrontendPriority                         = LabelPrefix + SuffixFrontendPriority
	LabelFrontendRule                             = LabelPrefix + SuffixFrontendRule
	LabelFrontendRuleType                         = LabelPrefix + "frontend.rule.type"
	LabelFrontendRedirectEntryPoint               = LabelPrefix + SuffixFrontendRedirectEntryPoint
	LabelFrontendRedirectRegex                    = LabelPrefix + SuffixFrontendRedirectRegex
	LabelFrontendRedirectReplacement              = LabelPrefix + SuffixFrontendRedirectReplacement
	LabelTraefikFrontendValue                     = LabelPrefix + "frontend.value"
	LabelTraefikFrontendWhitelistSourceRange      = LabelPrefix + "frontend.whitelistSourceRange"
	LabelFrontendRequestHeaders                   = LabelPrefix + "frontend.headers.customRequestHeaders"
	LabelFrontendResponseHeaders                  = LabelPrefix + "frontend.headers.customResponseHeaders"
	LabelFrontendAllowedHosts                     = LabelPrefix + "frontend.headers.allowedHosts"
	LabelFrontendHostsProxyHeaders                = LabelPrefix + "frontend.headers.hostsProxyHeaders"
	LabelFrontendSSLRedirect                      = LabelPrefix + "frontend.headers.SSLRedirect"
	LabelFrontendSSLTemporaryRedirect             = LabelPrefix + "frontend.headers.SSLTemporaryRedirect"
	LabelFrontendSSLHost                          = LabelPrefix + "frontend.headers.SSLHost"
	LabelFrontendSSLProxyHeaders                  = LabelPrefix + "frontend.headers.SSLProxyHeaders"
	LabelFrontendSTSSeconds                       = LabelPrefix + "frontend.headers.STSSeconds"
	LabelFrontendSTSIncludeSubdomains             = LabelPrefix + "frontend.headers.STSIncludeSubdomains"
	LabelFrontendSTSPreload                       = LabelPrefix + "frontend.headers.STSPreload"
	LabelFrontendForceSTSHeader                   = LabelPrefix + "frontend.headers.forceSTSHeader"
	LabelFrontendFrameDeny                        = LabelPrefix + "frontend.headers.frameDeny"
	LabelFrontendCustomFrameOptionsValue          = LabelPrefix + "frontend.headers.customFrameOptionsValue"
	LabelFrontendContentTypeNosniff               = LabelPrefix + "frontend.headers.contentTypeNosniff"
	LabelFrontendBrowserXSSFilter                 = LabelPrefix + "frontend.headers.browserXSSFilter"
	LabelFrontendContentSecurityPolicy            = LabelPrefix + "frontend.headers.contentSecurityPolicy"
	LabelFrontendPublicKey                        = LabelPrefix + "frontend.headers.publicKey"
	LabelFrontendReferrerPolicy                   = LabelPrefix + "frontend.headers.referrerPolicy"
	LabelFrontendIsDevelopment                    = LabelPrefix + "frontend.headers.isDevelopment"
	LabelBackend                                  = LabelPrefix + "backend"
	LabelBackendID                                = LabelPrefix + "backend.id"
	LabelTraefikBackendCircuitbreaker             = LabelPrefix + "backend.circuitbreaker"
	LabelBackendCircuitbreakerExpression          = LabelPrefix + "backend.circuitbreaker.expression"
	LabelBackendHealthcheckPath                   = LabelPrefix + "backend.healthcheck.path"
	LabelBackendHealthcheckInterval               = LabelPrefix + "backend.healthcheck.interval"
	LabelBackendLoadbalancerMethod                = LabelPrefix + "backend.loadbalancer.method"
	LabelBackendLoadbalancerSticky                = LabelPrefix + SuffixBackendLoadBalancerSticky
	LabelBackendLoadbalancerStickiness            = LabelPrefix + SuffixBackendLoadBalancerStickiness
	LabelBackendLoadbalancerStickinessCookieName  = LabelPrefix + SuffixBackendLoadBalancerStickinessCookieName
	LabelBackendMaxconnAmount                     = LabelPrefix + "backend.maxconn.amount"
	LabelBackendMaxconnExtractorfunc              = LabelPrefix + "backend.maxconn.extractorfunc"
)

//ServiceLabel converts a key value of Label*, given a serviceName, into a pattern <LabelPrefix>.<serviceName>.<property>
//    i.e. For LabelFrontendRule and serviceName=app it will return "traefik.app.frontend.rule"
func ServiceLabel(key, serviceName string) string {
	if len(serviceName) > 0 {
		property := strings.TrimPrefix(key, LabelPrefix)
		return LabelPrefix + serviceName + "." + property
	}
	return key
}

// SplitAndTrimString splits separatedString at the comma character and trims each
// piece, filtering out empty pieces. Returns the list of pieces or nil if the input
// did not contain a non-empty piece.
func SplitAndTrimString(base string) []string {
	var trimmedStrings []string

	for _, s := range strings.Split(base, ",") {
		s = strings.TrimSpace(s)
		if len(s) > 0 {
			trimmedStrings = append(trimmedStrings, s)
		}
	}

	return trimmedStrings
}