// getJoinedRelations finds out what relations the unit is *really* part of,
// working around the fact that pre-1.19 (1.18.1?) unit agents don't write a
// state dir for a relation until a remote unit joins.
func (u *Uniter) getJoinedRelations() (map[int]*uniter.Relation, error) {
var joinedRelationTags []string
for {
var err error
joinedRelationTags, err = u.unit.JoinedRelations()
if err == nil {
break
}
if params.IsCodeNotImplemented(err) {
logger.Infof("waiting for state server to be upgraded")
select {
case <-u.tomb.Dying():
return nil, tomb.ErrDying
case <-time.After(15 * time.Second):
continue
}
}
return nil, err
}
joinedRelations := make(map[int]*uniter.Relation)
for _, tag := range joinedRelationTags {
relation, err := u.st.Relation(tag)
if err != nil {
return nil, err
}
joinedRelations[relation.Id()] = relation
}
return joinedRelations, nil
}
func (c *DestroyEnvironmentCommand) Run(ctx *cmd.Context) (result error) {
store, err := configstore.Default()
if err != nil {
return fmt.Errorf("cannot open environment info storage: %v", err)
}
environ, err := environs.NewFromName(c.envName, store)
if err != nil {
if environs.IsEmptyConfig(err) {
// Delete the .jenv file and call it done.
ctx.Infof("removing empty environment file")
return environs.DestroyInfo(c.envName, store)
}
return err
}
if !c.assumeYes {
fmt.Fprintf(ctx.Stdout, destroyEnvMsg, environ.Name(), environ.Config().Type())
scanner := bufio.NewScanner(ctx.Stdin)
scanner.Scan()
err := scanner.Err()
if err != nil && err != io.EOF {
return fmt.Errorf("Environment destruction aborted: %s", err)
}
answer := strings.ToLower(scanner.Text())
if answer != "y" && answer != "yes" {
return errors.New("environment destruction aborted")
}
}
// If --force is supplied, then don't attempt to use the API.
// This is necessary to destroy broken environments, where the
// API server is inaccessible or faulty.
if !c.force {
defer func() {
if result == nil {
return
}
logger.Errorf(`failed to destroy environment %q
If the environment is unusable, then you may run
juju destroy-environment --force
to forcefully destroy the environment. Upon doing so, review
your environment provider console for any resources that need
to be cleaned up.
`, c.envName)
}()
apiclient, err := juju.NewAPIClientFromName(c.envName)
if err != nil {
return fmt.Errorf("cannot connect to API: %v", err)
}
defer apiclient.Close()
err = apiclient.DestroyEnvironment()
if err != nil && !params.IsCodeNotImplemented(err) {
return fmt.Errorf("destroying environment: %v", err)
}
}
return environs.Destroy(environ, store)
}
// Environment returns the environment entity.
func (st *State) Environment() (*Environment, error) {
var result params.EnvironmentResult
err := st.call("CurrentEnvironment", nil, &result)
if params.IsCodeNotImplemented(err) {
// Fall back to using the 1.16 API.
return st.environment1dot16()
}
if err != nil {
return nil, err
}
if err := result.Error; err != nil {
return nil, err
}
return &Environment{
name: result.Name,
uuid: result.UUID,
}, nil
}
// initVersions collects state relevant to an upgrade decision. The returned
// agent and client versions, and the list of currently available tools, will
// always be accurate; the chosen version, and the flag indicating development
// mode, may remain blank until uploadTools or validate is called.
func (c *UpgradeJujuCommand) initVersions(client *api.Client, cfg *config.Config) (*upgradeContext, error) {
agent, ok := cfg.AgentVersion()
if !ok {
// Can't happen. In theory.
return nil, fmt.Errorf("incomplete environment configuration")
}
if c.Version == agent {
return nil, errUpToDate
}
clientVersion := version.Current.Number
findResult, err := client.FindTools(clientVersion.Major, -1, "", "")
var availableTools coretools.List
if params.IsCodeNotImplemented(err) {
availableTools, err = findTools1dot17(cfg)
} else {
availableTools = findResult.List
}
if err != nil {
return nil, err
}
err = findResult.Error
if findResult.Error != nil {
if !params.IsCodeNotFound(err) {
return nil, err
}
if !c.UploadTools {
// No tools found and we shouldn't upload any, so if we are not asking for a
// major upgrade, pretend there is no more recent version available.
if c.Version == version.Zero && agent.Major == clientVersion.Major {
return nil, errUpToDate
}
return nil, err
}
}
return &upgradeContext{
agent: agent,
client: clientVersion,
chosen: c.Version,
tools: availableTools,
apiClient: client,
config: cfg,
}, nil
}
func (task *provisionerTask) startMachine(machine *apiprovisioner.Machine) error {
provisioningInfo, err := task.provisioningInfo(machine)
if err != nil {
return err
}
possibleTools, err := task.possibleTools(provisioningInfo.Series, provisioningInfo.Constraints)
if err != nil {
return task.setErrorStatus("cannot find tools for machine %q: %v", machine, err)
}
inst, metadata, networkInfo, err := task.broker.StartInstance(environs.StartInstanceParams{
Constraints: provisioningInfo.Constraints,
Tools: possibleTools,
MachineConfig: provisioningInfo.MachineConfig,
Placement: provisioningInfo.Placement,
DistributionGroup: machine.DistributionGroup,
})
if err != nil {
// Set the state to error, so the machine will be skipped next
// time until the error is resolved, but don't return an
// error; just keep going with the other machines.
return task.setErrorStatus("cannot start instance for machine %q: %v", machine, err)
}
nonce := provisioningInfo.MachineConfig.MachineNonce
networks, ifaces := task.prepareNetworkAndInterfaces(networkInfo)
err = machine.SetInstanceInfo(inst.Id(), nonce, metadata, networks, ifaces)
if err != nil && params.IsCodeNotImplemented(err) {
return fmt.Errorf("cannot provision instance %v for machine %q with networks: not implemented", inst.Id(), machine)
} else if err == nil {
logger.Infof("started machine %s as instance %s with hardware %q, networks %v, interfaces %v", machine, inst.Id(), metadata, networks, ifaces)
return nil
}
// We need to stop the instance right away here, set error status and go on.
task.setErrorStatus("cannot register instance for machine %v: %v", machine, err)
if err := task.broker.StopInstances(inst.Id()); err != nil {
// We cannot even stop the instance, log the error and quit.
logger.Errorf("cannot stop instance %q for machine %v: %v", inst.Id(), machine, err)
return err
}
return nil
}
func (task *provisionerTask) provisioningInfo(machine *apiprovisioner.Machine) (*provisioningInfo, error) {
stateInfo, apiInfo, err := task.auth.SetupAuthentication(machine)
if err != nil {
logger.Errorf("failed to setup authentication: %v", err)
return nil, err
}
// Generated a nonce for the new instance, with the format: "machine-#:UUID".
// The first part is a badge, specifying the tag of the machine the provisioner
// is running on, while the second part is a random UUID.
uuid, err := utils.NewUUID()
if err != nil {
return nil, err
}
// ProvisioningInfo is new in 1.20; wait for the API server to be upgraded
// so we don't spew errors on upgrade.
var pInfo *params.ProvisioningInfo
for {
if pInfo, err = machine.ProvisioningInfo(); err == nil {
break
}
if params.IsCodeNotImplemented(err) {
logger.Infof("waiting for state server to be upgraded")
select {
case <-task.tomb.Dying():
return nil, tomb.ErrDying
case <-time.After(15 * time.Second):
continue
}
}
return nil, err
}
nonce := fmt.Sprintf("%s:%s", task.machineTag, uuid.String())
machineConfig := environs.NewMachineConfig(machine.Id(), nonce, pInfo.Networks, stateInfo, apiInfo)
return &provisioningInfo{
Constraints: pInfo.Constraints,
Series: pInfo.Series,
Placement: pInfo.Placement,
MachineConfig: machineConfig,
}, nil
}
// uploadTools compiles jujud from $GOPATH and uploads it into the supplied
// storage. If no version has been explicitly chosen, the version number
// reported by the built tools will be based on the client version number.
// In any case, the version number reported will have a build component higher
// than that of any otherwise-matching available envtools.
// uploadTools resets the chosen version and replaces the available tools
// with the ones just uploaded.
func (context *upgradeContext) uploadTools(series []string) (err error) {
// TODO(fwereade): this is kinda crack: we should not assume that
// version.Current matches whatever source happens to be built. The
// ideal would be:
// 1) compile jujud from $GOPATH into some build dir
// 2) get actual version with `jujud version`
// 3) check actual version for compatibility with CLI tools
// 4) generate unique build version with reference to available tools
// 5) force-version that unique version into the dir directly
// 6) archive and upload the build dir
// ...but there's no way we have time for that now. In the meantime,
// considering the use cases, this should work well enough; but it
// won't detect an incompatible major-version change, which is a shame.
if context.chosen == version.Zero {
context.chosen = context.client
}
context.chosen = uploadVersion(context.chosen, context.tools)
builtTools, err := sync.BuildToolsTarball(&context.chosen)
if err != nil {
return err
}
defer os.RemoveAll(builtTools.Dir)
var uploaded *coretools.Tools
toolsPath := path.Join(builtTools.Dir, builtTools.StorageName)
logger.Infof("uploading tools %v (%dkB) to Juju state server", builtTools.Version, (builtTools.Size+512)/1024)
uploaded, err = context.apiClient.UploadTools(toolsPath, builtTools.Version, series...)
if params.IsCodeNotImplemented(err) {
uploaded, err = context.uploadTools1dot17(builtTools, series...)
}
if err != nil {
return err
}
context.tools = coretools.List{uploaded}
return nil
}
func containerManagerConfig(
containerType instance.ContainerType,
provisioner *apiprovisioner.State,
agentConfig agent.Config,
) (container.ManagerConfig, error) {
// Ask the provisioner for the container manager configuration.
managerConfigResult, err := provisioner.ContainerManagerConfig(
params.ContainerManagerConfigParams{Type: containerType},
)
if params.IsCodeNotImplemented(err) {
// We currently don't support upgrading;
// revert to the old configuration.
managerConfigResult.ManagerConfig = container.ManagerConfig{container.ConfigName: "juju"}
}
if err != nil {
return nil, err
}
// If a namespace is specified, that should instead be used as the config name.
if namespace := agentConfig.Value(agent.Namespace); namespace != "" {
managerConfigResult.ManagerConfig[container.ConfigName] = namespace
}
managerConfig := container.ManagerConfig(managerConfigResult.ManagerConfig)
return managerConfig, nil
}
func (c *DeployCommand) Run(ctx *cmd.Context) error {
client, err := juju.NewAPIClientFromName(c.EnvName)
if err != nil {
return err
}
defer client.Close()
attrs, err := client.EnvironmentGet()
if err != nil {
return err
}
conf, err := config.New(config.NoDefaults, attrs)
if err != nil {
return err
}
curl, err := resolveCharmURL(c.CharmName, client, conf)
if err != nil {
return err
}
repo, err := charm.InferRepository(curl.Reference, ctx.AbsPath(c.RepoPath))
if err != nil {
return err
}
repo = config.SpecializeCharmRepo(repo, conf)
curl, err = addCharmViaAPI(client, ctx, curl, repo)
if err != nil {
return err
}
if c.BumpRevision {
ctx.Infof("--upgrade (or -u) is deprecated and ignored; charms are always deployed with a unique revision.")
}
requestedNetworks, err := networkNamesToTags(parseNetworks(c.Networks))
if err != nil {
return err
}
// We need to ensure network names are valid below, but we don't need them here.
_, err = networkNamesToTags(c.Constraints.IncludeNetworks())
if err != nil {
return err
}
_, err = networkNamesToTags(c.Constraints.ExcludeNetworks())
if err != nil {
return err
}
haveNetworks := len(requestedNetworks) > 0 || c.Constraints.HaveNetworks()
charmInfo, err := client.CharmInfo(curl.String())
if err != nil {
return err
}
numUnits := c.NumUnits
if charmInfo.Meta.Subordinate {
if !constraints.IsEmpty(&c.Constraints) {
return errors.New("cannot use --constraints with subordinate service")
}
if numUnits == 1 && c.ToMachineSpec == "" {
numUnits = 0
} else {
return errors.New("cannot use --num-units or --to with subordinate service")
}
}
serviceName := c.ServiceName
if serviceName == "" {
serviceName = charmInfo.Meta.Name
}
var configYAML []byte
if c.Config.Path != "" {
configYAML, err = c.Config.Read(ctx)
if err != nil {
return err
}
}
err = client.ServiceDeployWithNetworks(
curl.String(),
serviceName,
numUnits,
string(configYAML),
c.Constraints,
c.ToMachineSpec,
requestedNetworks,
)
if params.IsCodeNotImplemented(err) {
if haveNetworks {
return errors.New("cannot use --networks/--constraints networks=...: not supported by the API server")
}
err = client.ServiceDeploy(
curl.String(),
serviceName,
numUnits,
string(configYAML),
c.Constraints,
c.ToMachineSpec)
}
return err
}
func (c *AddMachineCommand) Run(ctx *cmd.Context) error {
if c.Placement != nil && c.Placement.Scope == "ssh" {
args := manual.ProvisionMachineArgs{
Host: c.Placement.Directive,
EnvName: c.EnvName,
Stdin: ctx.Stdin,
Stdout: ctx.Stdout,
Stderr: ctx.Stderr,
}
_, err := manual.ProvisionMachine(args)
return err
}
client, err := juju.NewAPIClientFromName(c.EnvName)
if err != nil {
return err
}
defer client.Close()
if c.Placement != nil && c.Placement.Scope == instance.MachineScope {
// It does not make sense to add-machine <id>.
return fmt.Errorf("machine-id cannot be specified when adding machines")
}
machineParams := params.AddMachineParams{
Placement: c.Placement,
Series: c.Series,
Constraints: c.Constraints,
Jobs: []params.MachineJob{params.JobHostUnits},
}
results, err := client.AddMachines([]params.AddMachineParams{machineParams})
if params.IsCodeNotImplemented(err) {
if c.Placement != nil {
containerType, parseErr := instance.ParseContainerType(c.Placement.Scope)
if parseErr != nil {
// The user specified a non-container placement directive:
// return original API not implemented error.
return err
}
machineParams.ContainerType = containerType
machineParams.ParentId = c.Placement.Directive
machineParams.Placement = nil
}
logger.Infof(
"AddMachinesWithPlacement not supported by the API server, " +
"falling back to 1.18 compatibility mode",
)
results, err = client.AddMachines1dot18([]params.AddMachineParams{machineParams})
}
if err != nil {
return err
}
// Currently, only one machine is added, but in future there may be several added in one call.
machineInfo := results[0]
if machineInfo.Error != nil {
return machineInfo.Error
}
machineId := machineInfo.Machine
if names.IsContainerMachine(machineId) {
ctx.Infof("created container %v", machineId)
} else {
ctx.Infof("created machine %v", machineId)
}
return nil
}
func (c *AddMachineCommand) Run(ctx *cmd.Context) error {
if c.Placement != nil && c.Placement.Scope == "ssh" {
args := manual.ProvisionMachineArgs{
Host: c.Placement.Directive,
EnvName: c.EnvName,
Stdin: ctx.Stdin,
Stdout: ctx.Stdout,
Stderr: ctx.Stderr,
}
_, err := manual.ProvisionMachine(args)
return err
}
client, err := getAddMachineAPI(c.EnvName)
if err != nil {
return err
}
defer client.Close()
if c.Placement != nil && c.Placement.Scope == instance.MachineScope {
// It does not make sense to add-machine <id>.
return fmt.Errorf("machine-id cannot be specified when adding machines")
}
machineParams := params.AddMachineParams{
Placement: c.Placement,
Series: c.Series,
Constraints: c.Constraints,
Jobs: []params.MachineJob{params.JobHostUnits},
}
machines := make([]params.AddMachineParams, c.NumMachines)
for i := 0; i < c.NumMachines; i++ {
machines[i] = machineParams
}
results, err := client.AddMachines(machines)
if params.IsCodeNotImplemented(err) {
if c.Placement != nil {
containerType, parseErr := instance.ParseContainerType(c.Placement.Scope)
if parseErr != nil {
// The user specified a non-container placement directive:
// return original API not implemented error.
return err
}
machineParams.ContainerType = containerType
machineParams.ParentId = c.Placement.Directive
machineParams.Placement = nil
}
logger.Infof(
"AddMachinesWithPlacement not supported by the API server, " +
"falling back to 1.18 compatibility mode",
)
results, err = client.AddMachines1dot18([]params.AddMachineParams{machineParams})
}
if err != nil {
return err
}
errs := []error{}
for _, machineInfo := range results {
if machineInfo.Error != nil {
errs = append(errs, machineInfo.Error)
continue
}
machineId := machineInfo.Machine
if names.IsContainerMachine(machineId) {
ctx.Infof("created container %v", machineId)
} else {
ctx.Infof("created machine %v", machineId)
}
}
if len(errs) == 1 {
fmt.Fprintf(ctx.Stderr, "failed to create 1 machine\n")
return errs[0]
}
if len(errs) > 1 {
fmt.Fprintf(ctx.Stderr, "failed to create %d machines\n", len(errs))
returnErr := []string{}
for _, e := range errs {
returnErr = append(returnErr, fmt.Sprintf("%s", e))
}
return errors.New(strings.Join(returnErr, ", "))
}
return nil
}