forked from rancher/rke
/
proxy.go
62 lines (53 loc) · 2.08 KB
/
proxy.go
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package services
import (
"context"
"fmt"
"github.com/docker/docker/api/types/container"
"github.com/rancher/rke/docker"
"github.com/rancher/rke/hosts"
"github.com/rancher/types/apis/management.cattle.io/v3"
)
const (
NginxProxyImage = "rancher/rke-nginx-proxy:0.1.0"
NginxProxyEnvName = "CP_HOSTS"
)
func RollingUpdateNginxProxy(ctx context.Context, cpHosts []*hosts.Host, workerHosts []*hosts.Host, nginxProxyImage string, prsMap map[string]v3.PrivateRegistry) error {
nginxProxyEnv := buildProxyEnv(cpHosts)
for _, host := range workerHosts {
imageCfg, hostCfg := buildNginxProxyConfig(host, nginxProxyEnv, nginxProxyImage)
if err := docker.DoRollingUpdateContainer(ctx, host.DClient, imageCfg, hostCfg, NginxProxyContainerName, host.Address, WorkerRole, prsMap); err != nil {
return err
}
}
return nil
}
func runNginxProxy(ctx context.Context, host *hosts.Host, cpHosts []*hosts.Host, nginxProxyImage string, prsMap map[string]v3.PrivateRegistry) error {
nginxProxyEnv := buildProxyEnv(cpHosts)
imageCfg, hostCfg := buildNginxProxyConfig(host, nginxProxyEnv, nginxProxyImage)
return docker.DoRunContainer(ctx, host.DClient, imageCfg, hostCfg, NginxProxyContainerName, host.Address, WorkerRole, prsMap)
}
func removeNginxProxy(ctx context.Context, host *hosts.Host) error {
return docker.DoRemoveContainer(ctx, host.DClient, NginxProxyContainerName, host.Address)
}
func buildNginxProxyConfig(host *hosts.Host, nginxProxyEnv, nginxProxyImage string) (*container.Config, *container.HostConfig) {
imageCfg := &container.Config{
Image: nginxProxyImage,
Env: []string{fmt.Sprintf("%s=%s", NginxProxyEnvName, nginxProxyEnv)},
Cmd: []string{fmt.Sprintf("%s=%s", NginxProxyEnvName, nginxProxyEnv)},
}
hostCfg := &container.HostConfig{
NetworkMode: "host",
RestartPolicy: container.RestartPolicy{Name: "always"},
}
return imageCfg, hostCfg
}
func buildProxyEnv(cpHosts []*hosts.Host) string {
proxyEnv := ""
for i, cpHost := range cpHosts {
proxyEnv += fmt.Sprintf("%s", cpHost.InternalAddress)
if i < (len(cpHosts) - 1) {
proxyEnv += ","
}
}
return proxyEnv
}