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/
service_order.go
83 lines (73 loc) · 1.76 KB
/
service_order.go
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package resources
import (
"errors"
"strings"
"github.com/rancher/rancher-compose-executor/config"
"github.com/rancher/rancher-compose-executor/convert"
)
func getServiceOrder(containers, services map[string]*config.ServiceConfig) ([]string, error) {
var order []string
added := map[string]bool{}
for name := range containers {
add(name, &order, added)
}
for name, config := range services {
if config.Image == convert.LegacyLBImage {
continue
}
if config.LbConfig != nil && containsServicePortRules(config.LbConfig) {
continue
}
add(name, &order, added)
}
for i := 0; i < 100; i++ {
for name, config := range services {
if config.LbConfig != nil {
targetsAdded := true
for _, portRule := range config.LbConfig.PortRules {
if _, ok := added[portRule.Service]; !ok {
targetsAdded = false
break
}
}
if targetsAdded {
add(name, &order, added)
}
} else if config.Image == convert.LegacyLBImage {
targetsAdded := true
for _, link := range config.Links {
parts := strings.SplitN(link, ":", 2)
if len(parts) > 1 {
link = parts[1]
}
if _, ok := added[link]; !ok {
targetsAdded = false
break
}
}
if targetsAdded {
add(name, &order, added)
}
}
}
}
if len(order) != len(containers)+len(services) {
return nil, errors.New("Failed to determine correct order to create services")
}
return order, nil
}
func containsServicePortRules(lbConfig *config.LBConfig) bool {
for _, portRule := range lbConfig.PortRules {
if portRule.Service != "" {
return true
}
}
return false
}
func add(name string, order *[]string, added map[string]bool) {
if _, ok := added[name]; ok {
return
}
*order = append(*order, name)
added[name] = true
}