330 lines
9.6 KiB
Go
330 lines
9.6 KiB
Go
package mesos
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import (
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"fmt"
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"math"
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"strconv"
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"strings"
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"text/template"
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"github.com/BurntSushi/ty/fun"
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"github.com/containous/traefik/log"
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"github.com/containous/traefik/provider"
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"github.com/containous/traefik/provider/label"
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"github.com/containous/traefik/types"
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"github.com/mesosphere/mesos-dns/records/state"
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)
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func (p *Provider) buildConfigurationV1(tasks []state.Task) *types.Configuration {
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var mesosFuncMap = template.FuncMap{
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"getDomain": getFuncStringValueV1(label.TraefikDomain, p.Domain),
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"getID": getIDV1,
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// Backend functions
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"getBackendName": getBackendNameV1,
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"getHost": p.getHostV1,
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"getProtocol": getFuncApplicationStringValueV1(label.TraefikProtocol, label.DefaultProtocol),
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"getWeight": getFuncApplicationIntValueV1(label.TraefikWeight, label.DefaultWeight),
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"getBackend": getBackendV1,
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"getPort": p.getPort,
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// Frontend functions
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"getFrontendBackend": getBackendNameV1,
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"getFrontEndName": getFrontendNameV1,
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"getEntryPoints": getFuncSliceStringValueV1(label.TraefikFrontendEntryPoints),
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"getBasicAuth": getFuncSliceStringValueV1(label.TraefikFrontendAuthBasic),
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"getPriority": getFuncIntValueV1(label.TraefikFrontendPriority, label.DefaultFrontendPriority),
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"getPassHostHeader": getFuncBoolValueV1(label.TraefikFrontendPassHostHeader, label.DefaultPassHostHeader),
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"getFrontendRule": p.getFrontendRuleV1,
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}
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// filter tasks
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filteredTasks := fun.Filter(func(task state.Task) bool {
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return taskFilterV1(task, p.ExposedByDefault)
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}, tasks).([]state.Task)
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// Deprecated
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var filteredApps []state.Task
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uniqueApps := make(map[string]struct{})
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for _, task := range filteredTasks {
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if _, ok := uniqueApps[task.DiscoveryInfo.Name]; !ok {
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uniqueApps[task.DiscoveryInfo.Name] = struct{}{}
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filteredApps = append(filteredApps, task)
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}
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}
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appsTasks := make(map[string][]state.Task)
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for _, task := range filteredTasks {
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if _, ok := appsTasks[task.DiscoveryInfo.Name]; !ok {
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appsTasks[task.DiscoveryInfo.Name] = []state.Task{task}
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} else {
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appsTasks[task.DiscoveryInfo.Name] = append(appsTasks[task.DiscoveryInfo.Name], task)
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}
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}
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templateObjects := struct {
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ApplicationsTasks map[string][]state.Task
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Applications []state.Task // Deprecated
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Tasks []state.Task // Deprecated
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Domain string
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}{
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ApplicationsTasks: appsTasks,
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Applications: filteredApps, // Deprecated
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Tasks: filteredTasks, // Deprecated
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Domain: p.Domain,
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}
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configuration, err := p.GetConfiguration("templates/mesos-v1.tmpl", mesosFuncMap, templateObjects)
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if err != nil {
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log.Error(err)
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}
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return configuration
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}
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// Deprecated
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func taskFilterV1(task state.Task, exposedByDefaultFlag bool) bool {
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if len(task.DiscoveryInfo.Ports.DiscoveryPorts) == 0 {
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log.Debugf("Filtering Mesos task without port %s", task.Name)
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return false
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}
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if !isEnabledV1(task, exposedByDefaultFlag) {
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log.Debugf("Filtering disabled Mesos task %s", task.DiscoveryInfo.Name)
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return false
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}
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// filter indeterminable task port
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portIndexLabel := getStringValueV1(task, label.TraefikPortIndex, "")
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portValueLabel := getStringValueV1(task, label.TraefikPort, "")
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if portIndexLabel != "" && portValueLabel != "" {
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log.Debugf("Filtering Mesos task %s specifying both %q' and %q labels", task.Name, label.TraefikPortIndex, label.TraefikPort)
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return false
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}
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if portIndexLabel != "" {
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index, err := strconv.Atoi(portIndexLabel)
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if err != nil || index < 0 || index > len(task.DiscoveryInfo.Ports.DiscoveryPorts)-1 {
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log.Debugf("Filtering Mesos task %s with unexpected value for %q label", task.Name, label.TraefikPortIndex)
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return false
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}
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}
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if portValueLabel != "" {
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port, err := strconv.Atoi(portValueLabel)
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if err != nil {
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log.Debugf("Filtering Mesos task %s with unexpected value for %q label", task.Name, label.TraefikPort)
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return false
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}
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var foundPort bool
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for _, exposedPort := range task.DiscoveryInfo.Ports.DiscoveryPorts {
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if port == exposedPort.Number {
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foundPort = true
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break
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}
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}
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if !foundPort {
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log.Debugf("Filtering Mesos task %s without a matching port for %q label", task.Name, label.TraefikPort)
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return false
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}
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}
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// filter healthChecks
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if task.Statuses != nil && len(task.Statuses) > 0 && task.Statuses[0].Healthy != nil && !*task.Statuses[0].Healthy {
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log.Debugf("Filtering Mesos task %s with bad healthCheck", task.DiscoveryInfo.Name)
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return false
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}
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return true
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}
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// Deprecated
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func getIDV1(task state.Task) string {
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return provider.Normalize(task.ID)
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}
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// Deprecated
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func getBackendV1(task state.Task, apps []state.Task) string {
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_, err := getApplicationV1(task, apps)
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if err != nil {
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log.Error(err)
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return ""
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}
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return getBackendNameV1(task)
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}
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// Deprecated
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func getBackendNameV1(task state.Task) string {
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if value := getStringValueV1(task, label.TraefikBackend, ""); len(value) > 0 {
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return value
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}
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return provider.Normalize(task.DiscoveryInfo.Name)
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}
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// Deprecated
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func getFrontendNameV1(task state.Task) string {
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// TODO task.ID -> task.Name + task.ID
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return provider.Normalize(task.ID)
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}
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// Deprecated
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func (p *Provider) getPort(task state.Task, applications []state.Task) string {
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_, err := getApplicationV1(task, applications)
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if err != nil {
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log.Error(err)
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return ""
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}
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plv := getIntValueV1(task, label.TraefikPortIndex, math.MinInt32, len(task.DiscoveryInfo.Ports.DiscoveryPorts)-1)
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if plv >= 0 {
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return strconv.Itoa(task.DiscoveryInfo.Ports.DiscoveryPorts[plv].Number)
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}
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if pv := getStringValueV1(task, label.TraefikPort, ""); len(pv) > 0 {
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return pv
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}
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for _, port := range task.DiscoveryInfo.Ports.DiscoveryPorts {
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return strconv.Itoa(port.Number)
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}
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return ""
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}
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// getFrontendRuleV1 returns the frontend rule for the specified application, using
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// it's label. It returns a default one (Host) if the label is not present.
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// Deprecated
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func (p *Provider) getFrontendRuleV1(task state.Task) string {
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if v := getStringValueV1(task, label.TraefikFrontendRule, ""); len(v) > 0 {
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return v
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}
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domain := getStringValueV1(task, label.TraefikDomain, p.Domain)
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return "Host:" + strings.ToLower(strings.Replace(p.getSubDomain(task.DiscoveryInfo.Name), "_", "-", -1)) + "." + domain
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}
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// Deprecated
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func (p *Provider) getHostV1(task state.Task) string {
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return task.IP(strings.Split(p.IPSources, ",")...)
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}
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// Deprecated
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func isEnabledV1(task state.Task, exposedByDefault bool) bool {
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return getBoolValueV1(task, label.TraefikEnable, exposedByDefault)
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}
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// Label functions
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// Deprecated
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func getFuncApplicationStringValueV1(labelName string, defaultValue string) func(task state.Task, applications []state.Task) string {
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return func(task state.Task, applications []state.Task) string {
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_, err := getApplicationV1(task, applications)
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if err != nil {
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log.Error(err)
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return defaultValue
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}
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return getStringValueV1(task, labelName, defaultValue)
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}
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}
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// Deprecated
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func getFuncApplicationIntValueV1(labelName string, defaultValue int) func(task state.Task, applications []state.Task) int {
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return func(task state.Task, applications []state.Task) int {
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_, err := getApplicationV1(task, applications)
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if err != nil {
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log.Error(err)
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return defaultValue
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}
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return getIntValueV1(task, labelName, defaultValue, math.MaxInt32)
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}
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}
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// Deprecated
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func getFuncStringValueV1(labelName string, defaultValue string) func(task state.Task) string {
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return func(task state.Task) string {
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return getStringValueV1(task, labelName, defaultValue)
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}
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}
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// Deprecated
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func getFuncBoolValueV1(labelName string, defaultValue bool) func(task state.Task) bool {
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return func(task state.Task) bool {
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return getBoolValueV1(task, labelName, defaultValue)
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}
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}
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// Deprecated
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func getFuncIntValueV1(labelName string, defaultValue int) func(task state.Task) int {
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return func(task state.Task) int {
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return getIntValueV1(task, labelName, defaultValue, math.MaxInt32)
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}
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}
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// Deprecated
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func getFuncSliceStringValueV1(labelName string) func(task state.Task) []string {
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return func(task state.Task) []string {
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return getSliceStringValueV1(task, labelName)
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}
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}
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// Deprecated
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func getStringValueV1(task state.Task, labelName string, defaultValue string) string {
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for _, lbl := range task.Labels {
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if lbl.Key == labelName && len(lbl.Value) > 0 {
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return lbl.Value
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}
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}
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return defaultValue
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}
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// Deprecated
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func getBoolValueV1(task state.Task, labelName string, defaultValue bool) bool {
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for _, lbl := range task.Labels {
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if lbl.Key == labelName {
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v, err := strconv.ParseBool(lbl.Value)
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if err == nil {
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return v
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}
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}
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}
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return defaultValue
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}
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// Deprecated
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func getIntValueV1(task state.Task, labelName string, defaultValue int, maxValue int) int {
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for _, lbl := range task.Labels {
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if lbl.Key == labelName {
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value, err := strconv.Atoi(lbl.Value)
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if err == nil {
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if value <= maxValue {
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return value
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}
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log.Warnf("The value %q for %q exceed the max authorized value %q, falling back to %v.", lbl.Value, labelName, maxValue, defaultValue)
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} else {
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log.Warnf("Unable to parse %q: %q, falling back to %v. %v", labelName, lbl.Value, defaultValue, err)
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}
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}
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}
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return defaultValue
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}
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// Deprecated
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func getSliceStringValueV1(task state.Task, labelName string) []string {
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for _, lbl := range task.Labels {
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if lbl.Key == labelName {
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return label.SplitAndTrimString(lbl.Value, ",")
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}
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}
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return nil
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}
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// Deprecated
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func getApplicationV1(task state.Task, apps []state.Task) (state.Task, error) {
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for _, app := range apps {
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if app.DiscoveryInfo.Name == task.DiscoveryInfo.Name {
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return app, nil
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}
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}
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return state.Task{}, fmt.Errorf("unable to get Mesos application from task %s", task.DiscoveryInfo.Name)
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}
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