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services.go
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services.go
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package structs
import (
"crypto/sha1"
"fmt"
"hash"
"io"
"net/url"
"reflect"
"regexp"
"sort"
"strconv"
"strings"
"time"
"github.com/hashicorp/consul/api"
multierror "github.com/hashicorp/go-multierror"
"github.com/hashicorp/nomad/helper"
"github.com/hashicorp/nomad/helper/args"
"github.com/mitchellh/copystructure"
)
const (
EnvoyBootstrapPath = "${NOMAD_SECRETS_DIR}/envoy_bootstrap.json"
ServiceCheckHTTP = "http"
ServiceCheckTCP = "tcp"
ServiceCheckScript = "script"
ServiceCheckGRPC = "grpc"
// minCheckInterval is the minimum check interval permitted. Consul
// currently has its MinInterval set to 1s. Mirror that here for
// consistency.
minCheckInterval = 1 * time.Second
// minCheckTimeout is the minimum check timeout permitted for Consul
// script TTL checks.
minCheckTimeout = 1 * time.Second
)
// ServiceCheck represents the Consul health check.
type ServiceCheck struct {
Name string // Name of the check, defaults to id
Type string // Type of the check - tcp, http, docker and script
Command string // Command is the command to run for script checks
Args []string // Args is a list of arguments for script checks
Path string // path of the health check url for http type check
Protocol string // Protocol to use if check is http, defaults to http
PortLabel string // The port to use for tcp/http checks
Expose bool // Whether to have Envoy expose the check path (connect-enabled group-services only)
AddressMode string // 'host' to use host ip:port or 'driver' to use driver's
Interval time.Duration // Interval of the check
Timeout time.Duration // Timeout of the response from the check before consul fails the check
InitialStatus string // Initial status of the check
TLSSkipVerify bool // Skip TLS verification when Protocol=https
Method string // HTTP Method to use (GET by default)
Header map[string][]string // HTTP Headers for Consul to set when making HTTP checks
CheckRestart *CheckRestart // If and when a task should be restarted based on checks
GRPCService string // Service for GRPC checks
GRPCUseTLS bool // Whether or not to use TLS for GRPC checks
TaskName string // What task to execute this check in
SuccessBeforePassing int // Number of consecutive successes required before considered healthy
FailuresBeforeCritical int // Number of consecutive failures required before considered unhealthy
}
// Copy the stanza recursively. Returns nil if nil.
func (sc *ServiceCheck) Copy() *ServiceCheck {
if sc == nil {
return nil
}
nsc := new(ServiceCheck)
*nsc = *sc
nsc.Args = helper.CopySliceString(sc.Args)
nsc.Header = helper.CopyMapStringSliceString(sc.Header)
nsc.CheckRestart = sc.CheckRestart.Copy()
return nsc
}
// Equals returns true if the structs are recursively equal.
func (sc *ServiceCheck) Equals(o *ServiceCheck) bool {
if sc == nil || o == nil {
return sc == o
}
if sc.Name != o.Name {
return false
}
if sc.AddressMode != o.AddressMode {
return false
}
if !helper.CompareSliceSetString(sc.Args, o.Args) {
return false
}
if !sc.CheckRestart.Equals(o.CheckRestart) {
return false
}
if sc.TaskName != o.TaskName {
return false
}
if sc.SuccessBeforePassing != o.SuccessBeforePassing {
return false
}
if sc.FailuresBeforeCritical != o.FailuresBeforeCritical {
return false
}
if sc.Command != o.Command {
return false
}
if sc.GRPCService != o.GRPCService {
return false
}
if sc.GRPCUseTLS != o.GRPCUseTLS {
return false
}
// Use DeepEqual here as order of slice values could matter
if !reflect.DeepEqual(sc.Header, o.Header) {
return false
}
if sc.InitialStatus != o.InitialStatus {
return false
}
if sc.Interval != o.Interval {
return false
}
if sc.Method != o.Method {
return false
}
if sc.Path != o.Path {
return false
}
if sc.PortLabel != o.Path {
return false
}
if sc.Expose != o.Expose {
return false
}
if sc.Protocol != o.Protocol {
return false
}
if sc.TLSSkipVerify != o.TLSSkipVerify {
return false
}
if sc.Timeout != o.Timeout {
return false
}
if sc.Type != o.Type {
return false
}
return true
}
func (sc *ServiceCheck) Canonicalize(serviceName string) {
// Ensure empty maps/slices are treated as null to avoid scheduling
// issues when using DeepEquals.
if len(sc.Args) == 0 {
sc.Args = nil
}
if len(sc.Header) == 0 {
sc.Header = nil
} else {
for k, v := range sc.Header {
if len(v) == 0 {
sc.Header[k] = nil
}
}
}
if sc.Name == "" {
sc.Name = fmt.Sprintf("service: %q check", serviceName)
}
}
// validate a Service's ServiceCheck
func (sc *ServiceCheck) validate() error {
// Validate Type
checkType := strings.ToLower(sc.Type)
switch checkType {
case ServiceCheckGRPC:
case ServiceCheckTCP:
case ServiceCheckHTTP:
if sc.Path == "" {
return fmt.Errorf("http type must have a valid http path")
}
checkPath, err := url.Parse(sc.Path)
if err != nil {
return fmt.Errorf("http type must have a valid http path")
}
if checkPath.IsAbs() {
return fmt.Errorf("http type must have a relative http path")
}
case ServiceCheckScript:
if sc.Command == "" {
return fmt.Errorf("script type must have a valid script path")
}
default:
return fmt.Errorf(`invalid type (%+q), must be one of "http", "tcp", or "script" type`, sc.Type)
}
// Validate interval and timeout
if sc.Interval == 0 {
return fmt.Errorf("missing required value interval. Interval cannot be less than %v", minCheckInterval)
} else if sc.Interval < minCheckInterval {
return fmt.Errorf("interval (%v) cannot be lower than %v", sc.Interval, minCheckInterval)
}
if sc.Timeout == 0 {
return fmt.Errorf("missing required value timeout. Timeout cannot be less than %v", minCheckInterval)
} else if sc.Timeout < minCheckTimeout {
return fmt.Errorf("timeout (%v) is lower than required minimum timeout %v", sc.Timeout, minCheckInterval)
}
// Validate InitialStatus
switch sc.InitialStatus {
case "":
case api.HealthPassing:
case api.HealthWarning:
case api.HealthCritical:
default:
return fmt.Errorf(`invalid initial check state (%s), must be one of %q, %q, %q or empty`, sc.InitialStatus, api.HealthPassing, api.HealthWarning, api.HealthCritical)
}
// Validate AddressMode
switch sc.AddressMode {
case "", AddressModeHost, AddressModeDriver, AddressModeAlloc:
// Ok
case AddressModeAuto:
return fmt.Errorf("invalid address_mode %q - %s only valid for services", sc.AddressMode, AddressModeAuto)
default:
return fmt.Errorf("invalid address_mode %q", sc.AddressMode)
}
// Note that we cannot completely validate the Expose field yet - we do not
// know whether this ServiceCheck belongs to a connect-enabled group-service.
// Instead, such validation will happen in a job admission controller.
if sc.Expose {
// We can however immediately ensure expose is configured only for HTTP
// and gRPC checks.
switch checkType {
case ServiceCheckGRPC, ServiceCheckHTTP: // ok
default:
return fmt.Errorf("expose may only be set on HTTP or gRPC checks")
}
}
// passFailCheckTypes are intersection of check types supported by both Consul
// and Nomad when using the pass/fail check threshold features.
passFailCheckTypes := []string{"tcp", "http", "grpc"}
if sc.SuccessBeforePassing < 0 {
return fmt.Errorf("success_before_passing must be non-negative")
} else if sc.SuccessBeforePassing > 0 && !helper.SliceStringContains(passFailCheckTypes, sc.Type) {
return fmt.Errorf("success_before_passing not supported for check of type %q", sc.Type)
}
if sc.FailuresBeforeCritical < 0 {
return fmt.Errorf("failures_before_critical must be non-negative")
} else if sc.FailuresBeforeCritical > 0 && !helper.SliceStringContains(passFailCheckTypes, sc.Type) {
return fmt.Errorf("failures_before_critical not supported for check of type %q", sc.Type)
}
return sc.CheckRestart.Validate()
}
// RequiresPort returns whether the service check requires the task has a port.
func (sc *ServiceCheck) RequiresPort() bool {
switch sc.Type {
case ServiceCheckGRPC, ServiceCheckHTTP, ServiceCheckTCP:
return true
default:
return false
}
}
// TriggersRestarts returns true if this check should be watched and trigger a restart
// on failure.
func (sc *ServiceCheck) TriggersRestarts() bool {
return sc.CheckRestart != nil && sc.CheckRestart.Limit > 0
}
// Hash all ServiceCheck fields and the check's corresponding service ID to
// create an identifier. The identifier is not guaranteed to be unique as if
// the PortLabel is blank, the Service's PortLabel will be used after Hash is
// called.
func (sc *ServiceCheck) Hash(serviceID string) string {
h := sha1.New()
hashString(h, serviceID)
hashString(h, sc.Name)
hashString(h, sc.Type)
hashString(h, sc.Command)
hashString(h, strings.Join(sc.Args, ""))
hashString(h, sc.Path)
hashString(h, sc.Protocol)
hashString(h, sc.PortLabel)
hashString(h, sc.Interval.String())
hashString(h, sc.Timeout.String())
hashString(h, sc.Method)
// use name "true" to maintain ID stability
hashBool(h, sc.TLSSkipVerify, "true")
// maintain artisanal map hashing to maintain ID stability
hashHeader(h, sc.Header)
// Only include AddressMode if set to maintain ID stability with Nomad <0.7.1
hashStringIfNonEmpty(h, sc.AddressMode)
// Only include gRPC if set to maintain ID stability with Nomad <0.8.4
hashStringIfNonEmpty(h, sc.GRPCService)
// use name "true" to maintain ID stability
hashBool(h, sc.GRPCUseTLS, "true")
// Only include pass/fail if non-zero to maintain ID stability with Nomad < 0.12
hashIntIfNonZero(h, "success", sc.SuccessBeforePassing)
hashIntIfNonZero(h, "failures", sc.FailuresBeforeCritical)
// Hash is used for diffing against the Consul check definition, which does
// not have an expose parameter. Instead we rely on implied changes to
// other fields if the Expose setting is changed in a nomad service.
// hashBool(h, sc.Expose, "Expose")
// maintain use of hex (i.e. not b32) to maintain ID stability
return fmt.Sprintf("%x", h.Sum(nil))
}
func hashStringIfNonEmpty(h hash.Hash, s string) {
if len(s) > 0 {
hashString(h, s)
}
}
func hashIntIfNonZero(h hash.Hash, name string, i int) {
if i != 0 {
hashString(h, fmt.Sprintf("%s:%d", name, i))
}
}
func hashHeader(h hash.Hash, m map[string][]string) {
// maintain backwards compatibility for ID stability
// using the %v formatter on a map with string keys produces consistent
// output, but our existing format here is incompatible
if len(m) > 0 {
headers := make([]string, 0, len(m))
for k, v := range m {
headers = append(headers, k+strings.Join(v, ""))
}
sort.Strings(headers)
hashString(h, strings.Join(headers, ""))
}
}
const (
AddressModeAuto = "auto"
AddressModeHost = "host"
AddressModeDriver = "driver"
AddressModeAlloc = "alloc"
)
// Service represents a Consul service definition
type Service struct {
// Name of the service registered with Consul. Consul defaults the
// Name to ServiceID if not specified. The Name if specified is used
// as one of the seed values when generating a Consul ServiceID.
Name string
// Name of the Task associated with this service.
//
// Currently only used to identify the implementing task of a Consul
// Connect Native enabled service.
TaskName string
// PortLabel is either the numeric port number or the `host:port`.
// To specify the port number using the host's Consul Advertise
// address, specify an empty host in the PortLabel (e.g. `:port`).
PortLabel string
// AddressMode specifies whether or not to use the host ip:port for
// this service.
AddressMode string
// EnableTagOverride will disable Consul's anti-entropy mechanism for the
// tags of this service. External updates to the service definition via
// Consul will not be corrected to match the service definition set in the
// Nomad job specification.
//
// https://www.consul.io/docs/agent/services.html#service-definition
EnableTagOverride bool
Tags []string // List of tags for the service
CanaryTags []string // List of tags for the service when it is a canary
Checks []*ServiceCheck // List of checks associated with the service
Connect *ConsulConnect // Consul Connect configuration
Meta map[string]string // Consul service meta
CanaryMeta map[string]string // Consul service meta when it is a canary
}
// Copy the stanza recursively. Returns nil if nil.
func (s *Service) Copy() *Service {
if s == nil {
return nil
}
ns := new(Service)
*ns = *s
ns.Tags = helper.CopySliceString(ns.Tags)
ns.CanaryTags = helper.CopySliceString(ns.CanaryTags)
if s.Checks != nil {
checks := make([]*ServiceCheck, len(ns.Checks))
for i, c := range ns.Checks {
checks[i] = c.Copy()
}
ns.Checks = checks
}
ns.Connect = s.Connect.Copy()
ns.Meta = helper.CopyMapStringString(s.Meta)
ns.CanaryMeta = helper.CopyMapStringString(s.CanaryMeta)
return ns
}
// Canonicalize interpolates values of Job, Task Group and Task in the Service
// Name. This also generates check names, service id and check ids.
func (s *Service) Canonicalize(job string, taskGroup string, task string) {
// Ensure empty lists are treated as null to avoid scheduler issues when
// using DeepEquals
if len(s.Tags) == 0 {
s.Tags = nil
}
if len(s.CanaryTags) == 0 {
s.CanaryTags = nil
}
if len(s.Checks) == 0 {
s.Checks = nil
}
s.Name = args.ReplaceEnv(s.Name, map[string]string{
"JOB": job,
"TASKGROUP": taskGroup,
"TASK": task,
"BASE": fmt.Sprintf("%s-%s-%s", job, taskGroup, task),
})
for _, check := range s.Checks {
check.Canonicalize(s.Name)
}
}
// Validate checks if the Service definition is valid
func (s *Service) Validate() error {
var mErr multierror.Error
// Ensure the service name is valid per the below RFCs but make an exception
// for our interpolation syntax by first stripping any environment variables from the name
serviceNameStripped := args.ReplaceEnvWithPlaceHolder(s.Name, "ENV-VAR")
if err := s.ValidateName(serviceNameStripped); err != nil {
mErr.Errors = append(mErr.Errors, fmt.Errorf("Service name must be valid per RFC 1123 and can contain only alphanumeric characters or dashes: %q", s.Name))
}
switch s.AddressMode {
case "", AddressModeAuto, AddressModeHost, AddressModeDriver, AddressModeAlloc:
// OK
default:
mErr.Errors = append(mErr.Errors, fmt.Errorf("Service address_mode must be %q, %q, or %q; not %q", AddressModeAuto, AddressModeHost, AddressModeDriver, s.AddressMode))
}
// check checks
for _, c := range s.Checks {
if s.PortLabel == "" && c.PortLabel == "" && c.RequiresPort() {
mErr.Errors = append(mErr.Errors, fmt.Errorf("Check %s invalid: check requires a port but neither check nor service %+q have a port", c.Name, s.Name))
continue
}
// TCP checks against a Consul Connect enabled service are not supported
// due to the service being bound to the loopback interface inside the
// network namespace
if c.Type == ServiceCheckTCP && s.Connect != nil && s.Connect.SidecarService != nil {
mErr.Errors = append(mErr.Errors, fmt.Errorf("Check %s invalid: tcp checks are not valid for Connect enabled services", c.Name))
continue
}
if err := c.validate(); err != nil {
mErr.Errors = append(mErr.Errors, fmt.Errorf("Check %s invalid: %v", c.Name, err))
}
}
// check connect
if s.Connect != nil {
if err := s.Connect.Validate(); err != nil {
mErr.Errors = append(mErr.Errors, err)
}
// if service is connect native, service task must be set (which may
// happen implicitly in a job mutation if there is only one task)
if s.Connect.IsNative() && len(s.TaskName) == 0 {
mErr.Errors = append(mErr.Errors, fmt.Errorf("Service %s is Connect Native and requires setting the task", s.Name))
}
}
return mErr.ErrorOrNil()
}
// ValidateName checks if the service Name is valid and should be called after
// the name has been interpolated
func (s *Service) ValidateName(name string) error {
// Ensure the service name is valid per RFC-952 §1
// (https://tools.ietf.org/html/rfc952), RFC-1123 §2.1
// (https://tools.ietf.org/html/rfc1123), and RFC-2782
// (https://tools.ietf.org/html/rfc2782).
re := regexp.MustCompile(`^(?i:[a-z0-9]|[a-z0-9][a-z0-9\-]{0,61}[a-z0-9])$`)
if !re.MatchString(name) {
return fmt.Errorf("Service name must be valid per RFC 1123 and can contain only alphanumeric characters or dashes and must be no longer than 63 characters: %q", name)
}
return nil
}
// Hash returns a base32 encoded hash of a Service's contents excluding checks
// as they're hashed independently.
func (s *Service) Hash(allocID, taskName string, canary bool) string {
h := sha1.New()
hashString(h, allocID)
hashString(h, taskName)
hashString(h, s.Name)
hashString(h, s.PortLabel)
hashString(h, s.AddressMode)
hashTags(h, s.Tags)
hashTags(h, s.CanaryTags)
hashBool(h, canary, "Canary")
hashBool(h, s.EnableTagOverride, "ETO")
hashMeta(h, s.Meta)
hashMeta(h, s.CanaryMeta)
hashConnect(h, s.Connect)
// Base32 is used for encoding the hash as sha1 hashes can always be
// encoded without padding, only 4 bytes larger than base64, and saves
// 8 bytes vs hex. Since these hashes are used in Consul URLs it's nice
// to have a reasonably compact URL-safe representation.
return b32.EncodeToString(h.Sum(nil))
}
func hashConnect(h hash.Hash, connect *ConsulConnect) {
if connect != nil && connect.SidecarService != nil {
hashString(h, connect.SidecarService.Port)
hashTags(h, connect.SidecarService.Tags)
if p := connect.SidecarService.Proxy; p != nil {
hashString(h, p.LocalServiceAddress)
hashString(h, strconv.Itoa(p.LocalServicePort))
hashConfig(h, p.Config)
for _, upstream := range p.Upstreams {
hashString(h, upstream.DestinationName)
hashString(h, strconv.Itoa(upstream.LocalBindPort))
hashStringIfNonEmpty(h, upstream.Datacenter)
}
}
}
}
func hashString(h hash.Hash, s string) {
_, _ = io.WriteString(h, s)
}
func hashBool(h hash.Hash, b bool, name string) {
if b {
hashString(h, name)
}
}
func hashTags(h hash.Hash, tags []string) {
for _, tag := range tags {
hashString(h, tag)
}
}
func hashMeta(h hash.Hash, m map[string]string) {
_, _ = fmt.Fprintf(h, "%v", m)
}
func hashConfig(h hash.Hash, c map[string]interface{}) {
_, _ = fmt.Fprintf(h, "%v", c)
}
// Equals returns true if the structs are recursively equal.
func (s *Service) Equals(o *Service) bool {
if s == nil || o == nil {
return s == o
}
if s.AddressMode != o.AddressMode {
return false
}
if !helper.CompareSliceSetString(s.CanaryTags, o.CanaryTags) {
return false
}
if len(s.Checks) != len(o.Checks) {
return false
}
OUTER:
for i := range s.Checks {
for ii := range o.Checks {
if s.Checks[i].Equals(o.Checks[ii]) {
// Found match; continue with next check
continue OUTER
}
}
// No match
return false
}
if !s.Connect.Equals(o.Connect) {
return false
}
if s.Name != o.Name {
return false
}
if s.PortLabel != o.PortLabel {
return false
}
if !reflect.DeepEqual(s.Meta, o.Meta) {
return false
}
if !reflect.DeepEqual(s.CanaryMeta, o.CanaryMeta) {
return false
}
if !helper.CompareSliceSetString(s.Tags, o.Tags) {
return false
}
if s.EnableTagOverride != o.EnableTagOverride {
return false
}
return true
}
// ConsulConnect represents a Consul Connect jobspec stanza.
type ConsulConnect struct {
// Native indicates whether the service is Consul Connect Native enabled.
Native bool
// SidecarService is non-nil if a service requires a sidecar.
SidecarService *ConsulSidecarService
// SidecarTask is non-nil if sidecar overrides are set
SidecarTask *SidecarTask
// Gateway is a Consul Connect Gateway Proxy.
Gateway *ConsulGateway
}
// Copy the stanza recursively. Returns nil if nil.
func (c *ConsulConnect) Copy() *ConsulConnect {
if c == nil {
return nil
}
return &ConsulConnect{
Native: c.Native,
SidecarService: c.SidecarService.Copy(),
SidecarTask: c.SidecarTask.Copy(),
Gateway: c.Gateway.Copy(),
}
}
// Equals returns true if the connect blocks are deeply equal.
func (c *ConsulConnect) Equals(o *ConsulConnect) bool {
if c == nil || o == nil {
return c == o
}
if c.Native != o.Native {
return false
}
if !c.SidecarService.Equals(o.SidecarService) {
return false
}
if !c.SidecarTask.Equals(o.SidecarTask) {
return false
}
if !c.Gateway.Equals(o.Gateway) {
return false
}
return true
}
// HasSidecar checks if a sidecar task is configured.
func (c *ConsulConnect) HasSidecar() bool {
return c != nil && c.SidecarService != nil
}
// IsNative checks if the service is connect native.
func (c *ConsulConnect) IsNative() bool {
return c != nil && c.Native
}
func (c *ConsulConnect) IsGateway() bool {
return c != nil && c.Gateway != nil
}
// Validate that the Connect block represents exactly one of:
// - Connect non-native service sidecar proxy
// - Connect native service
// - Connect gateway (any type)
func (c *ConsulConnect) Validate() error {
if c == nil {
return nil
}
// Count the number of things actually configured. If that number is not 1,
// the config is not valid.
count := 0
if c.HasSidecar() {
count++
}
if c.IsNative() {
count++
}
if c.IsGateway() {
count++
}
if count != 1 {
return fmt.Errorf("Consul Connect must be exclusively native, make use of a sidecar, or represent a Gateway")
}
if c.IsGateway() {
if err := c.Gateway.Validate(); err != nil {
return err
}
}
// The Native and Sidecar cases are validated up at the service level.
return nil
}
// ConsulSidecarService represents a Consul Connect SidecarService jobspec
// stanza.
type ConsulSidecarService struct {
// Tags are optional service tags that get registered with the sidecar service
// in Consul. If unset, the sidecar service inherits the parent service tags.
Tags []string
// Port is the service's port that the sidecar will connect to. May be
// a port label or a literal port number.
Port string
// Proxy stanza defining the sidecar proxy configuration.
Proxy *ConsulProxy
}
// HasUpstreams checks if the sidecar service has any upstreams configured
func (s *ConsulSidecarService) HasUpstreams() bool {
return s != nil && s.Proxy != nil && len(s.Proxy.Upstreams) > 0
}
// Copy the stanza recursively. Returns nil if nil.
func (s *ConsulSidecarService) Copy() *ConsulSidecarService {
if s == nil {
return nil
}
return &ConsulSidecarService{
Tags: helper.CopySliceString(s.Tags),
Port: s.Port,
Proxy: s.Proxy.Copy(),
}
}
// Equals returns true if the structs are recursively equal.
func (s *ConsulSidecarService) Equals(o *ConsulSidecarService) bool {
if s == nil || o == nil {
return s == o
}
if s.Port != o.Port {
return false
}
if !helper.CompareSliceSetString(s.Tags, o.Tags) {
return false
}
return s.Proxy.Equals(o.Proxy)
}
// SidecarTask represents a subset of Task fields that are able to be overridden
// from the sidecar_task stanza
type SidecarTask struct {
// Name of the task
Name string
// Driver is used to control which driver is used
Driver string
// User is used to determine which user will run the task. It defaults to
// the same user the Nomad client is being run as.
User string
// Config is provided to the driver to initialize
Config map[string]interface{}
// Map of environment variables to be used by the driver
Env map[string]string
// Resources is the resources needed by this task
Resources *Resources
// Meta is used to associate arbitrary metadata with this
// task. This is opaque to Nomad.
Meta map[string]string
// KillTimeout is the time between signaling a task that it will be
// killed and killing it.
KillTimeout *time.Duration
// LogConfig provides configuration for log rotation
LogConfig *LogConfig
// ShutdownDelay is the duration of the delay between deregistering a
// task from Consul and sending it a signal to shutdown. See #2441
ShutdownDelay *time.Duration
// KillSignal is the kill signal to use for the task. This is an optional
// specification and defaults to SIGINT
KillSignal string
}
func (t *SidecarTask) Equals(o *SidecarTask) bool {
if t == nil || o == nil {
return t == o
}
if t.Name != o.Name {
return false
}
if t.Driver != o.Driver {
return false
}
if t.User != o.User {
return false
}
// config compare
if !opaqueMapsEqual(t.Config, o.Config) {
return false
}
if !helper.CompareMapStringString(t.Env, o.Env) {
return false
}
if !t.Resources.Equals(o.Resources) {
return false
}
if !helper.CompareMapStringString(t.Meta, o.Meta) {
return false
}
if !helper.CompareTimePtrs(t.KillTimeout, o.KillTimeout) {
return false
}
if !t.LogConfig.Equals(o.LogConfig) {
return false
}
if !helper.CompareTimePtrs(t.ShutdownDelay, o.ShutdownDelay) {
return false
}
if t.KillSignal != o.KillSignal {
return false
}
return true
}
func (t *SidecarTask) Copy() *SidecarTask {
if t == nil {
return nil
}
nt := new(SidecarTask)
*nt = *t
nt.Env = helper.CopyMapStringString(nt.Env)
nt.Resources = nt.Resources.Copy()
nt.LogConfig = nt.LogConfig.Copy()
nt.Meta = helper.CopyMapStringString(nt.Meta)
if i, err := copystructure.Copy(nt.Config); err != nil {
panic(err.Error())
} else {
nt.Config = i.(map[string]interface{})
}
if t.KillTimeout != nil {
nt.KillTimeout = helper.TimeToPtr(*t.KillTimeout)
}
if t.ShutdownDelay != nil {
nt.ShutdownDelay = helper.TimeToPtr(*t.ShutdownDelay)
}
return nt
}
// MergeIntoTask merges the SidecarTask fields over the given task
func (t *SidecarTask) MergeIntoTask(task *Task) {
if t.Name != "" {
task.Name = t.Name
}
// If the driver changes then the driver config can be overwritten.
// Otherwise we'll merge the driver config together
if t.Driver != "" && t.Driver != task.Driver {
task.Driver = t.Driver
task.Config = t.Config
} else {
for k, v := range t.Config {
task.Config[k] = v
}
}
if t.User != "" {
task.User = t.User
}
if t.Env != nil {
if task.Env == nil {
task.Env = t.Env
} else {
for k, v := range t.Env {
task.Env[k] = v
}
}
}
if t.Resources != nil {
task.Resources.Merge(t.Resources)
}
if t.Meta != nil {
if task.Meta == nil {
task.Meta = t.Meta
} else {
for k, v := range t.Meta {
task.Meta[k] = v
}
}
}
if t.KillTimeout != nil {
task.KillTimeout = *t.KillTimeout
}