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api_blueprint.go
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api_blueprint.go
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package docker
import (
"encoding/json"
"fmt"
"net/http"
"strings"
"time"
"bufio"
"strconv"
"os"
"io/ioutil"
"os/user"
"errors"
"github.com/docker/go-connections/nat"
"github.com/docker/docker/api/types/mount"
"github.com/docker/docker/api/types/network"
conttype "github.com/docker/docker/api/types/container"
doctype "github.com/docker/docker/api/types"
strslice "github.com/docker/docker/api/types/strslice"
volumetype "github.com/docker/docker/api/types/volume"
"github.com/azukaar/cosmos-server/src/utils"
)
type ContainerCreateRequestServiceNetwork struct {
Aliases []string `json:"aliases,omitempty"`
IPV4Address string `json:"ipv4_address,omitempty"`
IPV6Address string `json:"ipv6_address,omitempty"`
}
type ContainerCreateRequestContainerHealthcheck struct {
Test []string `json:"test"`
Interval int `json:"interval"`
Timeout int `json:"timeout"`
Retries int `json:"retries"`
StartPeriod int `json:"start_period"`
}
type ContainerCreateRequestContainer struct {
Name string `json:"container_name"`
Image string `json:"image"`
Environment []string `json:"environment"`
Labels map[string]string `json:"labels"`
Ports []string `json:"ports"`
Volumes []mount.Mount `json:"volumes"`
Networks map[string]ContainerCreateRequestServiceNetwork `json:"networks"`
Routes []utils.ProxyRouteConfig `json:"routes"`
Links []string `json:"links,omitempty"`
RestartPolicy string `json:"restart,omitempty"`
Devices []string `json:"devices"`
Expose []string `json:"expose"`
DependsOn []string `json:"depends_on"`
Tty bool `json:"tty,omitempty"`
StdinOpen bool `json:"stdin_open,omitempty"`
Command string `json:"command,omitempty"`
Entrypoint string `json:"entrypoint,omitempty"`
WorkingDir string `json:"working_dir,omitempty"`
User string `json:"user,omitempty"`
UID int `json:"uid,omitempty"`
GID int `json:"gid,omitempty"`
Hostname string `json:"hostname,omitempty"`
Domainname string `json:"domainname,omitempty"`
MacAddress string `json:"mac_address,omitempty"`
Privileged bool `json:"privileged,omitempty"`
NetworkMode string `json:"network_mode,omitempty"`
StopSignal string `json:"stop_signal,omitempty"`
StopGracePeriod int `json:"stop_grace_period,omitempty"`
HealthCheck ContainerCreateRequestContainerHealthcheck `json:"healthcheck,omitempty"`
DNS []string `json:"dns,omitempty"`
DNSSearch []string `json:"dns_search,omitempty"`
ExtraHosts []string `json:"extra_hosts,omitempty"`
SecurityOpt []string `json:"security_opt,omitempty"`
StorageOpt map[string]string `json:"storage_opt,omitempty"`
Sysctls map[string]string `json:"sysctls,omitempty"`
Isolation string `json:"isolation,omitempty"`
CapAdd []string `json:"cap_add,omitempty"`
CapDrop []string `json:"cap_drop,omitempty"`
PostInstall []string `json:"post_install,omitempty"`
}
type ContainerCreateRequestVolume struct {
// name must be unique
Name string `json:"name"`
Driver string `json:"driver"`
Source string `json:"source"`
Target string `json:"target"`
}
type ContainerCreateRequestNetworkIPAMConfig struct {
Subnet string `json:"subnet"`
Gateway string `json:"gateway"`
}
type ContainerCreateRequestNetwork struct {
// name must be unique
Name string `json:"name"`
Driver string `json:"driver"`
Attachable bool `json:"attachable"`
Internal bool `json:"internal"`
EnableIPv6 bool `json:"enable_ipv6"`
Labels map[string]string `json:"labels"`
IPAM struct {
Driver string `json:"driver"`
Config []ContainerCreateRequestNetworkIPAMConfig `json:"config"`
} `json:"ipam"`
}
type DockerServiceCreateRequest struct {
Services map[string]ContainerCreateRequestContainer `json:"services"`
Volumes map[string]ContainerCreateRequestVolume `json:"volumes"`
Networks map[string]ContainerCreateRequestNetwork `json:"networks"`
}
type DockerServiceCreateRollback struct {
// action: disconnect, remove, etc...
Action string `json:"action"`
// type: container, volume, network
Type string `json:"type"`
// name: container name, volume name, network name
Name string `json:"name"`
// was: container old settings
Was doctype.ContainerJSON `json:"was"`
}
func Rollback(actions []DockerServiceCreateRollback , OnLog func(string)) {
for i := len(actions) - 1; i >= 0; i-- {
action := actions[i]
switch action.Type {
case "container":
if action.Action == "remove" {
utils.Log(fmt.Sprintf("Removing container %s...", action.Name))
DockerClient.ContainerKill(DockerContext, action.Name, "SIGKILL")
err := DockerClient.ContainerRemove(DockerContext, action.Name, doctype.ContainerRemoveOptions{})
if err != nil {
utils.Error("Rollback: Container", err)
OnLog(utils.DoErr("Rollback: Container %s", err))
} else {
utils.Log(fmt.Sprintf("Rolled back container %s", action.Name))
OnLog(fmt.Sprintf("Rolled back container %s\n", action.Name))
}
} else if action.Action == "revert" {
utils.Log(fmt.Sprintf("Reverting container %s...", action.Name))
// Edit Container
_, err := EditContainer(action.Name, action.Was, false)
if err != nil {
utils.Error("Rollback: Container", err)
OnLog(utils.DoErr("Rollback: Container %s", err))
} else {
utils.Log(fmt.Sprintf("Rolled back container %s", action.Name))
OnLog(fmt.Sprintf("Rolled back container %s\n", action.Name))
}
} else if action.Action == "restore" {
utils.Log(fmt.Sprintf("Restoring container %s...", action.Name))
// Edit Container
_, err := EditContainer("", action.Was, true)
if err != nil {
utils.Error("Rollback: Container", err)
OnLog(utils.DoErr("Rollback: Container %s", err))
} else {
utils.Log(fmt.Sprintf("Rolled back container %s", action.Name))
OnLog(fmt.Sprintf("Rolled back container %s\n", action.Name))
}
}
case "volume":
utils.Log(fmt.Sprintf("Removing volume %s...", action.Name))
err := DockerClient.VolumeRemove(DockerContext, action.Name, true)
if err != nil {
utils.Error("Rollback: Volume", err)
OnLog(utils.DoErr("Rollback: Volume %s", err))
} else {
utils.Log(fmt.Sprintf("Rolled back volume %s", action.Name))
OnLog(fmt.Sprintf("Rolled back volume %s\n", action.Name))
}
case "network":
utils.Log(fmt.Sprintf("Removing network %s...", action.Name))
if os.Getenv("HOSTNAME") != "" {
DockerClient.NetworkDisconnect(DockerContext, action.Name, os.Getenv("HOSTNAME"), true)
}
err := DockerClient.NetworkRemove(DockerContext, action.Name)
if err != nil {
utils.Error("Rollback: Network", err)
OnLog(utils.DoErr("Rollback: Network %s", err))
} else {
utils.Log(fmt.Sprintf("Rolled back network %s", action.Name))
OnLog(fmt.Sprintf("Rolled back network %s\n", action.Name))
}
}
}
// After all operations
utils.Error("CreateService", fmt.Errorf("Operation failed. Changes have been rolled back."))
OnLog("[OPERATION FAILED]. CHANGES HAVE BEEN ROLLEDBACK.\n")
}
func CreateServiceRoute(w http.ResponseWriter, req *http.Request) {
if utils.AdminOnly(w, req) != nil {
return
}
errD := Connect()
if errD != nil {
utils.Error("CreateService - connect - ", errD)
utils.HTTPError(w, "Internal server error: " + errD.Error(), http.StatusInternalServerError, "DS002")
return
}
if req.Method == "POST" {
w.Header().Set("X-Content-Type-Options", "nosniff")
w.Header().Set("Transfer-Encoding", "chunked")
flusher, ok := w.(http.Flusher)
if !ok {
http.Error(w, "Streaming unsupported!", http.StatusInternalServerError)
return
}
decoder := json.NewDecoder(req.Body)
var serviceRequest DockerServiceCreateRequest
err := decoder.Decode(&serviceRequest)
if err != nil {
utils.Error("CreateService - decode - ", err)
fmt.Fprintf(w, "[OPERATION FAILED] Bad request: "+err.Error(), http.StatusBadRequest, "DS003")
flusher.Flush()
utils.HTTPError(w, "Bad request: " + err.Error(), http.StatusBadRequest, "DS003")
return
}
CreateService(serviceRequest,
func (msg string) {
fmt.Fprintf(w, msg)
flusher.Flush()
},
)
} else {
utils.Error("CreateService: Method not allowed" + req.Method, nil)
utils.HTTPError(w, "Method not allowed", http.StatusMethodNotAllowed, "HTTP001")
return
}
}
// generatePorts is a helper function to generate a slice of ports from a string range.
func generatePorts(portRangeStr string) []string {
portsStr := strings.Split(portRangeStr, "-")
if len(portsStr) != 2 {
return []string{
portsStr[0],
}
}
start, _ := strconv.Atoi(portsStr[0])
end, _ := strconv.Atoi(portsStr[1])
ports := make([]string, end-start+1)
for i := range ports {
ports[i] = strconv.Itoa(start + i)
}
return ports
}
func CreateService(serviceRequest DockerServiceCreateRequest, OnLog func(string)) error {
utils.ConfigLock.Lock()
defer utils.ConfigLock.Unlock()
utils.Log("Starting creation of new service...")
OnLog("Starting creation of new service...\n")
needsHTTPRestart := false
config := utils.ReadConfigFromFile()
configRoutes := config.HTTPConfig.ProxyConfig.Routes
var rollbackActions []DockerServiceCreateRollback
var err error
// Create networks
for networkToCreateName, networkToCreate := range serviceRequest.Networks {
utils.Log(fmt.Sprintf("Creating network %s...", networkToCreateName))
OnLog(fmt.Sprintf("Creating network %s...\n", networkToCreateName))
// check if network already exists
exNetworkDef, err := DockerClient.NetworkInspect(DockerContext, networkToCreateName, doctype.NetworkInspectOptions{})
if err == nil {
if networkToCreate.Driver == "" {
networkToCreate.Driver = "bridge"
}
if (exNetworkDef.Driver != networkToCreate.Driver) {
utils.Error("CreateService: Network", err)
OnLog(utils.DoErr("Network %s already exists with incompatible settings, cannot merge new network into it.\n", networkToCreateName))
Rollback(rollbackActions, OnLog)
return err
} else {
utils.Warn(fmt.Sprintf("Network %s already exists, skipping creation", networkToCreateName))
OnLog(utils.DoWarn("Network %s already exists, skipping creation\n", networkToCreateName))
continue
}
}
ipamConfig := make([]network.IPAMConfig, len(networkToCreate.IPAM.Config))
if networkToCreate.IPAM.Config != nil {
for i, config := range networkToCreate.IPAM.Config {
ipamConfig[i] = network.IPAMConfig{
Subnet: config.Subnet,
}
}
}
networkPayload := doctype.NetworkCreate{
Driver: networkToCreate.Driver,
Attachable: networkToCreate.Attachable,
Internal: networkToCreate.Internal,
EnableIPv6: networkToCreate.EnableIPv6,
IPAM: &network.IPAM{
Driver: networkToCreate.IPAM.Driver,
Config: ipamConfig,
},
}
_, err = CreateReasonableNetwork(networkToCreateName, networkPayload)
if err != nil {
utils.Error("CreateService: Rolling back changes because of -- Network", err)
OnLog(utils.DoErr("Rolling back changes because of -- Network creation error: %s\n", err.Error()))
Rollback(rollbackActions, OnLog)
return err
}
rollbackActions = append(rollbackActions, DockerServiceCreateRollback{
Action: "remove",
Type: "network",
Name: networkToCreateName,
})
// Write a response to the client
utils.Log(fmt.Sprintf("Network %s created", networkToCreateName))
OnLog(fmt.Sprintf("Network %s created\n", networkToCreateName))
}
// Create volumes
for volumeName, volume := range serviceRequest.Volumes {
if volume.Name == "" {
volume.Name = volumeName
}
// check if volume already exists
_, err := DockerClient.VolumeInspect(DockerContext, volume.Name)
if err == nil {
utils.Warn(fmt.Sprintf("Volume %s already exists, skipping creation", volume.Name))
OnLog(utils.DoWarn("Volume %s already exists, skipping creation\n", volume.Name))
continue
}
utils.Log(fmt.Sprintf("Creating volume %s...", volume.Name))
OnLog(fmt.Sprintf("Creating volume %s...\n", volume.Name))
_, err = DockerClient.VolumeCreate(DockerContext, volumetype.CreateOptions{
Driver: volume.Driver,
Name: volume.Name,
})
if err != nil {
utils.Error("CreateService: Rolling back changes because of -- Volume", err)
OnLog(utils.DoErr("Rolling back changes because of -- Volume creation error: %s\n", err.Error()))
Rollback(rollbackActions, OnLog)
return err
}
rollbackActions = append(rollbackActions, DockerServiceCreateRollback{
Action: "remove",
Type: "volume",
Name: volume.Name,
})
// Write a response to the client
utils.Log(fmt.Sprintf("Volume %s created", volume.Name))
OnLog(fmt.Sprintf("Volume %s created\n", volume.Name))
}
// pull images
for _, container := range serviceRequest.Services {
// Write a response to the client
utils.Log(fmt.Sprintf("Pulling image %s", container.Image))
OnLog(fmt.Sprintf("Pulling image %s\n", container.Image))
out, err := DockerPullImage(container.Image)
if err != nil {
utils.Error("CreateService: Rolling back changes because of -- Image pull", err)
OnLog(utils.DoErr("Rolling back changes because of -- Image pull error: %s\n", err.Error()))
Rollback(rollbackActions, OnLog)
return err
}
defer out.Close()
// wait for image pull to finish
scanner := bufio.NewScanner(out)
for scanner.Scan() {
OnLog(fmt.Sprintf("%s\n", scanner.Text()))
}
// Write a response to the client
utils.Log(fmt.Sprintf("Image %s pulled", container.Image))
OnLog(fmt.Sprintf("Image %s pulled\n", container.Image))
}
// Create containers
for serviceName, container := range serviceRequest.Services {
utils.Log(fmt.Sprintf("Checking service %s...", serviceName))
OnLog(fmt.Sprintf("Checking service %s...\n", serviceName))
// If container request a Cosmos network, create and attach it
if strings.ToLower(container.Labels["cosmos-network-name"]) == "auto" {
utils.Log(fmt.Sprintf("Forcing secure %s...", serviceName))
OnLog(fmt.Sprintf("Forcing secure %s...\n", serviceName))
newNetwork, errNC := CreateCosmosNetwork(serviceName)
if errNC != nil {
utils.Error("CreateService: Network", err)
OnLog(utils.DoErr("Network %s cant be created\n", newNetwork))
Rollback(rollbackActions, OnLog)
return err
}
container.Labels["cosmos-network-name"] = newNetwork
AttachNetworkToCosmos(newNetwork)
if container.Networks == nil {
container.Networks = make(map[string]ContainerCreateRequestServiceNetwork)
}
container.Networks[newNetwork] = ContainerCreateRequestServiceNetwork{}
rollbackActions = append(rollbackActions, DockerServiceCreateRollback{
Action: "remove",
Type: "network",
Name: newNetwork,
})
utils.Log(fmt.Sprintf("Created secure network %s", newNetwork))
OnLog(fmt.Sprintf("Created secure network %s\n", newNetwork))
} else if container.Labels["cosmos-network-name"] != "" {
// Container has a declared a Cosmos network, check if it exists and connect to it
utils.Log(fmt.Sprintf("Checking declared network %s...", container.Labels["cosmos-network-name"]))
OnLog(fmt.Sprintf("Checking declared network %s...\n", container.Labels["cosmos-network-name"]))
_, err := DockerClient.NetworkInspect(DockerContext, container.Labels["cosmos-network-name"], doctype.NetworkInspectOptions{})
if err == nil {
utils.Log(fmt.Sprintf("Connecting to declared network %s...", container.Labels["cosmos-network-name"]))
OnLog(fmt.Sprintf("Connecting to declared network %s...\n", container.Labels["cosmos-network-name"]))
AttachNetworkToCosmos(container.Labels["cosmos-network-name"])
}
}
utils.Log(fmt.Sprintf("Creating container %s...", container.Name))
OnLog(fmt.Sprintf("Creating container %s...\n", container.Name))
containerConfig := &conttype.Config{
Image: container.Image,
Env: container.Environment,
Labels: container.Labels,
ExposedPorts: nat.PortSet{},
WorkingDir: container.WorkingDir,
User: container.User,
Hostname: container.Hostname,
Domainname: container.Domainname,
MacAddress: container.MacAddress,
StopSignal: container.StopSignal,
StopTimeout: &container.StopGracePeriod,
Tty: container.Tty,
OpenStdin: container.StdinOpen,
}
if container.StopGracePeriod == 0 {
containerConfig.StopTimeout = nil
}
// check if there's an empty TZ env, if so, replace it with the host's TZ
if containerConfig.Env != nil {
for i, env := range containerConfig.Env {
if strings.HasPrefix(env, "TZ=") {
if strings.TrimPrefix(env, "TZ=") == "auto" {
if os.Getenv("TZ") != "" {
containerConfig.Env[i] = "TZ=" + os.Getenv("TZ")
} else {
containerConfig.Env = append(containerConfig.Env[:i], containerConfig.Env[i+1:]...)
}
}
}
}
}
if container.Command != "" {
containerConfig.Cmd = strings.Fields(container.Command)
}
if container.Entrypoint != "" {
containerConfig.Entrypoint = strslice.StrSlice(strings.Fields(container.Entrypoint))
}
// For Expose / Ports
for _, expose := range container.Expose {
exposePort := nat.Port(expose)
containerConfig.ExposedPorts[exposePort] = struct{}{}
}
PortBindings := nat.PortMap{}
finalPorts := []string{}
for _, portRaw := range container.Ports {
portStuff := strings.Split(portRaw, "/")
if len(portStuff) == 1 {
portStuff = append(portStuff, "tcp")
}
port, protocol := portStuff[0], portStuff[1]
hostPorts := []string{}
containerPorts := []string{}
ports := strings.Split(port, ":")
hostPorts = generatePorts(ports[len(ports)-2])
containerPorts = generatePorts(ports[len(ports)-1])
ipExposed := ""
if len(portStuff) > 2 {
ipExposed = strings.Join(portStuff[0:len(portStuff)-2], ":")
}
for i := 0; i < utils.Max(len(hostPorts), len(containerPorts)); i++ {
hostPort := hostPorts[i%len(hostPorts)]
containerPort := containerPorts[i%len(containerPorts)]
finalPorts = append(finalPorts, fmt.Sprintf("%s@%s:%s/%s", ipExposed, hostPort, containerPort, protocol))
}
}
utils.Debug(fmt.Sprintf("Final ports: %s", finalPorts))
hostPortsBound := make(map[string]bool)
for _, portRaw := range finalPorts {
portStuff := strings.Split(portRaw, "/")
ipport := strings.Split(portStuff[0], "@")
ipdest := ""
portdef := ipport[0]
if len(ipport) > 1 {
portdef = ipport[1]
ipdest = ipport[0]
}
port, protocol := portdef, portStuff[1]
if protocol == "" {
protocol = "tcp"
}
nextPort := strings.Split(port, ":")
hostPort, contPort := nextPort[0], nextPort[1]
contPort = contPort + "/" + protocol
if hostPortsBound[hostPort + "/" + protocol] {
utils.Warn("Port " + hostPort + " already bound, skipping")
continue
}
// Get the existing bindings for this container port, if any
bindings := PortBindings[nat.Port(contPort)]
// Append a new PortBinding to the slice of bindings
pb := nat.PortBinding {
HostPort: hostPort,
}
if ipdest != "" {
pb.HostIP = ipdest
}
bindings = append(bindings, pb)
// Update the port bindings for this container port
PortBindings[nat.Port(contPort)] = bindings
// Mark the container port as exposed
containerConfig.ExposedPorts[nat.Port(contPort)] = struct{}{}
hostPortsBound[hostPort + "/" + protocol] = true
}
// Create missing folders for bind mounts
for _, newmount := range container.Volumes {
if newmount.Type == mount.TypeBind {
newSource := newmount.Source
if os.Getenv("HOSTNAME") != "" {
if _, err := os.Stat("/mnt/host"); os.IsNotExist(err) {
utils.Error("CreateService: Unable to create directory for bind mount in the host directory. Please mount the host / in Cosmos with -v /:/mnt/host to enable folder creations, or create the bind folder yourself", err)
OnLog(utils.DoErr("Unable to create directory for bind mount in the host directory. Please mount the host / in Cosmos with -v /:/mnt/host to enable folder creations, or create the bind folder yourself: %s\n", err.Error()))
continue
} else {
newSource = "/mnt/host" + newSource
}
}
utils.Log(fmt.Sprintf("Checking directory %s for bind mount", newSource))
OnLog(fmt.Sprintf("Checking directory %s for bind mount\n", newSource))
if _, err := os.Stat(newSource); os.IsNotExist(err) {
utils.Log(fmt.Sprintf("Not found. Creating directory %s for bind mount", newSource))
OnLog(fmt.Sprintf("Not found. Creating directory %s for bind mount\n", newSource))
err := os.MkdirAll(newSource, 0750)
if err != nil {
utils.Error("CreateService: Unable to create directory for bind mount. Make sure parent directories exist, and that Cosmos has permissions to create directories in the host directory", err)
OnLog(utils.DoErr("Unable to create directory for bind mount. Make sure parent directories exist, and that Cosmos has permissions to create directories in the host directory: %s\n", err.Error()))
Rollback(rollbackActions, OnLog)
return err
}
if container.UID != 0 {
// Change the ownership of the directory to the container.UID
err = os.Chown(newSource, container.UID, container.GID)
if err != nil {
utils.Error("CreateService: Unable to change ownership of directory", err)
OnLog(utils.DoErr("Unable to change ownership of directory: " + err.Error()))
}
} else if container.User != "" && strings.Contains(container.User, ":") {
uidgid := strings.Split(container.User, ":")
uid, _ := strconv.Atoi(uidgid[0])
gid, _ := strconv.Atoi(uidgid[1])
err = os.Chown(newSource, uid, gid)
if err != nil {
utils.Error("CreateService: Unable to change ownership of directory", err)
OnLog(utils.DoErr("Unable to change ownership of directory: " + err.Error()))
}
} else if container.User != "" {
// Change the ownership of the directory to the container.User
userInfo, err := user.Lookup(container.User)
if err != nil {
utils.Error("CreateService: Unable to lookup user", err)
OnLog(utils.DoErr("Unable to lookup user " + container.User + ". " +err.Error()))
} else {
uid, _ := strconv.Atoi(userInfo.Uid)
gid, _ := strconv.Atoi(userInfo.Gid)
err = os.Chown(newSource, uid, gid)
if err != nil {
utils.Error("CreateService: Unable to change ownership of directory", err)
OnLog(utils.DoErr("Unable to change ownership of directory: " + err.Error()))
}
}
}
}
}
}
hostConfig := &conttype.HostConfig{
PortBindings: PortBindings,
Mounts: container.Volumes,
RestartPolicy: conttype.RestartPolicy{
Name: container.RestartPolicy,
},
Privileged: container.Privileged,
NetworkMode: conttype.NetworkMode(container.NetworkMode),
DNS: container.DNS,
DNSSearch: container.DNSSearch,
ExtraHosts: container.ExtraHosts,
SecurityOpt: container.SecurityOpt,
StorageOpt: container.StorageOpt,
Sysctls: container.Sysctls,
Isolation: conttype.Isolation(container.Isolation),
CapAdd: container.CapAdd,
CapDrop: container.CapDrop,
}
// For Healthcheck
if len(container.HealthCheck.Test) > 0 {
containerConfig.Healthcheck = &conttype.HealthConfig{
Test: container.HealthCheck.Test,
Interval: time.Duration(container.HealthCheck.Interval) * time.Second,
Timeout: time.Duration(container.HealthCheck.Timeout) * time.Second,
StartPeriod: time.Duration(container.HealthCheck.StartPeriod) * time.Second,
Retries: container.HealthCheck.Retries,
}
}
// For Devices
devices := []conttype.DeviceMapping{}
for _, device := range container.Devices {
deviceSplit := strings.Split(device, ":")
devices = append(devices, conttype.DeviceMapping{
PathOnHost: deviceSplit[0],
PathInContainer: deviceSplit[1],
CgroupPermissions: "rwm", // This can be "r", "w", "m", or any combination
})
}
hostConfig.Devices = devices
networkingConfig := &network.NetworkingConfig{
EndpointsConfig: make(map[string]*network.EndpointSettings),
}
// check if container exist
existingContainer, err := DockerClient.ContainerInspect(DockerContext, container.Name)
if err == nil {
// Edit Container
oldConfig := doctype.ContainerJSON{}
oldConfig.ContainerJSONBase = new(doctype.ContainerJSONBase)
oldConfig.Config = existingContainer.Config
oldConfig.HostConfig = existingContainer.HostConfig
oldConfig.Name = existingContainer.Name
oldConfig.NetworkSettings = existingContainer.NetworkSettings
utils.Warn("CreateService: Container " + container.Name + " already exist, overwriting.")
OnLog(utils.DoWarn("Container " + container.Name + " already exist, overwriting.\n"))
// stop the container
utils.Log("CreateService: Stopping container: " + container.Name)
OnLog("Stopping container: " + container.Name + "\n")
err = DockerClient.ContainerStop(DockerContext, container.Name, conttype.StopOptions{})
if err != nil {
utils.Error("CreateService: Rolling back changes because of -- Container", err)
OnLog(utils.DoErr("Rolling back changes because of -- Container creation error: "+err.Error()))
Rollback(rollbackActions, OnLog)
return err
}
// remove the container
utils.Log("CreateService: Removing container: " + container.Name)
OnLog("Removing container: " + container.Name + "\n")
err = DockerClient.ContainerRemove(DockerContext, container.Name, doctype.ContainerRemoveOptions{})
if err != nil {
utils.Error("CreateService: Rolling back changes because of -- Container", err)
OnLog(utils.DoErr("Rolling back changes because of -- Container creation error: "+err.Error()))
Rollback(rollbackActions, OnLog)
return err
}
// check if there are persistent env var
if containerConfig.Labels["cosmos-persistent-env"] != "" {
// split env vars
envVars := strings.Split(containerConfig.Labels["cosmos-persistent-env"], ",")
// get existing env vars
existingEnvVars := existingContainer.Config.Env
// loop through env vars
for _, envVar := range envVars {
envVar = strings.TrimSpace(envVar)
// check if env var already exist
exists := false
existingEnvVarValue := ""
for _, existingEnvVar := range existingEnvVars {
if strings.HasPrefix(existingEnvVar, envVar + "=") {
exists = true
existingEnvVarValue = existingEnvVar
break
}
}
// if it exist, copy value to new container
if exists {
wasReplace := false
for i, newEnvVar := range containerConfig.Env {
if strings.HasPrefix(newEnvVar, envVar + "=") {
containerConfig.Env[i] = envVar + "=" + strings.TrimPrefix(existingEnvVarValue, envVar + "=")
wasReplace = true
break
}
}
if !wasReplace {
containerConfig.Env = append(containerConfig.Env, envVar + "=" + strings.TrimPrefix(existingEnvVarValue, envVar + "="))
}
}
}
}
rollbackActions = append(rollbackActions, DockerServiceCreateRollback{
Action: "restore",
Type: "container",
Was: oldConfig,
})
}
_, err = DockerClient.ContainerCreate(DockerContext, containerConfig, hostConfig, networkingConfig, nil, container.Name)
if err != nil {
utils.Error("CreateService: Rolling back changes because of -- Container", err)
OnLog(utils.DoErr("Rolling back changes because of -- Container creation error: "+err.Error()))
Rollback(rollbackActions, OnLog)
return err
}
rollbackActions = append(rollbackActions, DockerServiceCreateRollback{
Action: "remove",
Type: "container",
Name: container.Name,
})
// connect to networks
for netName, netConfig := range container.Networks {
utils.Log("CreateService: Connecting to network: " + netName)
err = DockerClient.NetworkConnect(DockerContext, netName, container.Name, &network.EndpointSettings{
Aliases: netConfig.Aliases,
IPAddress: netConfig.IPV4Address,
GlobalIPv6Address: netConfig.IPV6Address,
})
if err != nil && !strings.Contains(err.Error(), "already exists in network") {
utils.Error("CreateService: Rolling back changes because of -- Network Connection -- ", err)
OnLog(utils.DoErr("Rolling back changes because of -- Network connection error: "+err.Error()))
Rollback(rollbackActions, OnLog)
return err
} else if err != nil && strings.Contains(err.Error(), "already exists in network") {
utils.Warn("CreateService: Container " + container.Name + " already connected to network " + netName + ", skipping.")
OnLog(utils.DoWarn("Container %s already connected to network %s, skipping.", container.Name, netName))
}
}
// add routes
for _, route := range container.Routes {
// check if route already exists
exists := false
existsAt := 0
for destRouteIndex, configRoute := range configRoutes {
if configRoute.Name == route.Name {
exists = true
existsAt = destRouteIndex
break
}
}
if !exists {
needsHTTPRestart = true
configRoutes = append([]utils.ProxyRouteConfig{(utils.ProxyRouteConfig)(route)}, configRoutes...)
} else {
// utils.Error("CreateService: Rolling back changes because of -- Route already exist", nil)
// OnLog(utils.DoErr("Rolling back changes because of -- Route already exist"))
// Rollback(rollbackActions, OnLog)
// return errors.New("Route already exist")
//overwrite route
configRoutes[existsAt] = (utils.ProxyRouteConfig)(route)
utils.Warn("CreateService: Route " + route.Name + " already exist, overwriting.")
OnLog(utils.DoWarn("Route " + route.Name + " already exist, overwriting.\n"))
}
}
// Create the networks for links
for _, targetContainer := range container.Links {
if targetContainer == "" {
continue
}
if strings.Contains(targetContainer, ":") {
err = errors.New("Link network cannot contain ':' please use container name only")
utils.Error("CreateService: Rolling back changes because of -- Link network", err)
OnLog(utils.DoErr("Rolling back changes because of -- Link network creation error: "+err.Error()))
Rollback(rollbackActions, OnLog)
return err
}
err = CreateLinkNetwork(container.Name, targetContainer)
if err != nil {
utils.Error("CreateService: Rolling back changes because of -- Link network", err)
OnLog(utils.DoErr("Rolling back changes because of -- Link network creation error: "+err.Error()))
Rollback(rollbackActions, OnLog)
return err
}
}
// Write a response to the client
utils.Log(fmt.Sprintf("Container %s created", container.Name))
OnLog(fmt.Sprintf("Container %s created", container.Name))
}
// re-order containers dpeneding on depends_on
startOrder, err := ReOrderServices(serviceRequest.Services)
if err != nil {
utils.Error("CreateService: Rolling back changes because of -- Container", err)
OnLog(utils.DoErr("Rolling back changes because of -- Container creation error: "+err.Error()))
Rollback(rollbackActions, OnLog)
return err
}
// Start all the newly created containers
for _, container := range startOrder {
err = DockerClient.ContainerStart(DockerContext, container.Name, doctype.ContainerStartOptions{})
if err != nil {
utils.Error("CreateService: Start Container", err)
OnLog(utils.DoErr("Rolling back changes because of -- Container start error" + container.Name + " : "+err.Error()))
Rollback(rollbackActions, OnLog)
return err
}
// Write a response to the client
utils.Log(fmt.Sprintf("Container %s initiated", container.Name))
OnLog(fmt.Sprintf("Container %s initiated", container.Name))
// if post install
if len(container.PostInstall) > 0 {
utils.Log(fmt.Sprintf("Waiting for container %s to start", container.Name))
OnLog(fmt.Sprintf("Waiting for container %s to start", container.Name))
// wait for container to start
for {
time.Sleep(1 * time.Second)
inspect, _ := DockerClient.ContainerInspect(DockerContext, container.Name)
if inspect.State.Running {
break
}
}
time.Sleep(1 * time.Second)
// run post install commands
for _, cmd := range container.PostInstall {
utils.Log(fmt.Sprintf("Running post install command: %s", cmd))
OnLog(fmt.Sprintf("Running post install command: %s", cmd))
// setup the execution of command
execResponse, err := DockerClient.ContainerExecCreate(DockerContext, container.Name, doctype.ExecConfig{
Cmd: []string{"/bin/sh", "-c", cmd},
AttachStdout: true,
AttachStderr: true,
})
if err != nil {
utils.Error("CreateService: Post Install", err)
OnLog(utils.DoErr("Rolling back changes because of -- Post install error: "+err.Error()))
Rollback(rollbackActions, OnLog)
return err
}
// attach to the exec instance
response, err := DockerClient.ContainerExecAttach(DockerContext, execResponse.ID, doctype.ExecStartCheck{})
if err != nil {
utils.Error("CreateService: Post Install", err)
OnLog(utils.DoErr("Rolling back changes because of -- Post install error: "+err.Error()))
Rollback(rollbackActions, OnLog)
return err
}
defer response.Close()
// run the command
err = DockerClient.ContainerExecStart(DockerContext, execResponse.ID, doctype.ExecStartCheck{})
if err != nil {
utils.Error("CreateService: Post Install", err)
OnLog(utils.DoErr("Rolling back changes because of -- Post install error: "+err.Error()))
Rollback(rollbackActions, OnLog)
return err
}
// read the output
out, _ := ioutil.ReadAll(response.Reader)
OnLog(fmt.Sprintf("----> %s", out))
}
// restart container
DockerClient.ContainerRestart(DockerContext, container.Name, conttype.StopOptions{})
}
}
// Save the route configs
config.HTTPConfig.ProxyConfig.Routes = configRoutes
utils.SaveConfigTofile(config)
if needsHTTPRestart {
utils.RestartHTTPServer()
}
// After all operations
utils.Log("CreateService: Operation succeeded. SERVICE STARTED")
OnLog("\n")
OnLog(utils.DoSuccess("[OPERATION SUCCEEDED]. SERVICE STARTED\n"))
servicesNames := []string{}