forked from pkallberg/cx
/
services-scale.go
120 lines (98 loc) · 2.91 KB
/
services-scale.go
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package main
import (
"fmt"
"os"
"strconv"
"strings"
"time"
"github.com/cloud66/cloud66"
"github.com/cloud66/cli"
)
func runServiceScale(c *cli.Context) {
if len(c.Args()) != 2 {
cli.ShowSubcommandHelp(c)
os.Exit(2)
}
stack := mustStack(c)
serviceName := c.Args()[0]
count := c.Args()[1]
flagServer := c.String("server")
flagGroup := c.String("group")
// fetch servers info
servers, err := client.Servers(stack.Uid)
must(err)
if flagServer != "" {
server, err := findServer(servers, flagServer)
must(err)
if server == nil {
printFatal("Server '" + flagServer + "' not found")
}
if !server.HasRole("docker") {
printFatal("Server '" + flagServer + "' can not host containers")
}
fmt.Printf("Server: %s\n", server.Name)
// filter servers collection down
servers = make([]cloud66.Server, 1)
servers[0] = *server
}
if flagGroup != "" {
if flagGroup != "web" {
printFatal("Only web group is supported at the moment")
}
}
// param for api call
serverCountDesired := make(map[string]int)
var absoluteCount int
if strings.ContainsAny(count, "+ & -") {
// fetch service information for existing counts
service, err := client.GetService(stack.Uid, serviceName, nil, nil)
must(err)
serverCountCurrent := service.ServerContainerCountMap()
relativeCount, _ := strconv.Atoi(count)
for _, server := range servers {
if _, present := serverCountCurrent[server.Name]; present {
serverCountDesired[server.Uid] = relativeCount + serverCountCurrent[server.Name]
} else {
serverCountDesired[server.Uid] = relativeCount
}
}
} else {
absoluteCount, _ = strconv.Atoi(count)
for _, server := range servers {
serverCountDesired[server.Uid] = absoluteCount
}
}
// validate non < 0
for serverUid, count := range serverCountDesired {
if count < 0 {
serverCountDesired[serverUid] = 0
}
}
fmt.Println("Scaling your '" + serviceName + "' service")
var asyncId *int
if flagGroup != "" {
var groupMap = make(map[string]int)
groupMap["web"] = absoluteCount
asyncId, err = startServiceScaleByGroup(stack.Uid, serviceName, groupMap)
} else {
asyncId, err = startServiceScale(stack.Uid, serviceName, serverCountDesired)
}
must(err)
genericRes, err := endServiceScale(*asyncId, stack.Uid)
must(err)
printGenericResponse(*genericRes)
return
}
func startServiceScale(stackUid string, serviceName string, serverCount map[string]int) (*int, error) {
asyncRes, err := client.ScaleService(stackUid, serviceName, serverCount)
must(err)
return &asyncRes.Id, err
}
func startServiceScaleByGroup(stackUid string, serviceName string, groupCount map[string]int) (*int, error) {
asyncRes, err := client.ScaleServiceByGroup(stackUid, serviceName, groupCount)
must(err)
return &asyncRes.Id, err
}
func endServiceScale(asyncId int, stackUid string) (*cloud66.GenericResponse, error) {
return client.WaitStackAsyncAction(asyncId, stackUid, 5*time.Second, 20*time.Minute, true)
}