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diff.go
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diff.go
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package structs
import (
"fmt"
"reflect"
"sort"
"strings"
"github.com/hashicorp/nomad/helper/flatmap"
"github.com/mitchellh/hashstructure"
)
// DiffType denotes the type of a diff object.
type DiffType string
var (
DiffTypeNone DiffType = "None"
DiffTypeAdded DiffType = "Added"
DiffTypeDeleted DiffType = "Deleted"
DiffTypeEdited DiffType = "Edited"
)
func (d DiffType) Less(other DiffType) bool {
// Edited > Added > Deleted > None
// But we do a reverse sort
if d == other {
return false
}
if d == DiffTypeEdited {
return true
} else if other == DiffTypeEdited {
return false
} else if d == DiffTypeAdded {
return true
} else if other == DiffTypeAdded {
return false
} else if d == DiffTypeDeleted {
return true
} else if other == DiffTypeDeleted {
return false
}
return true
}
// JobDiff contains the diff of two jobs.
type JobDiff struct {
Type DiffType
ID string
Fields []*FieldDiff
Objects []*ObjectDiff
TaskGroups []*TaskGroupDiff
}
// Diff returns a diff of two jobs and a potential error if the Jobs are not
// diffable. If contextual diff is enabled, objects within the job will contain
// field information even if unchanged.
func (j *Job) Diff(other *Job, contextual bool) (*JobDiff, error) {
// COMPAT: Remove "Update" in 0.7.0. Update pushed down to task groups
// in 0.6.0
diff := &JobDiff{Type: DiffTypeNone}
var oldPrimitiveFlat, newPrimitiveFlat map[string]string
filter := []string{"ID", "Status", "StatusDescription", "Version", "Stable", "CreateIndex",
"ModifyIndex", "JobModifyIndex", "Update", "SubmitTime"}
if j == nil && other == nil {
return diff, nil
} else if j == nil {
j = &Job{}
diff.Type = DiffTypeAdded
newPrimitiveFlat = flatmap.Flatten(other, filter, true)
diff.ID = other.ID
} else if other == nil {
other = &Job{}
diff.Type = DiffTypeDeleted
oldPrimitiveFlat = flatmap.Flatten(j, filter, true)
diff.ID = j.ID
} else {
if j.ID != other.ID {
return nil, fmt.Errorf("can not diff jobs with different IDs: %q and %q", j.ID, other.ID)
}
oldPrimitiveFlat = flatmap.Flatten(j, filter, true)
newPrimitiveFlat = flatmap.Flatten(other, filter, true)
diff.ID = other.ID
}
// Diff the primitive fields.
diff.Fields = fieldDiffs(oldPrimitiveFlat, newPrimitiveFlat, false)
// Datacenters diff
if setDiff := stringSetDiff(j.Datacenters, other.Datacenters, "Datacenters", contextual); setDiff != nil && setDiff.Type != DiffTypeNone {
diff.Objects = append(diff.Objects, setDiff)
}
// Constraints diff
conDiff := primitiveObjectSetDiff(
interfaceSlice(j.Constraints),
interfaceSlice(other.Constraints),
[]string{"str"},
"Constraint",
contextual)
if conDiff != nil {
diff.Objects = append(diff.Objects, conDiff...)
}
// Task groups diff
tgs, err := taskGroupDiffs(j.TaskGroups, other.TaskGroups, contextual)
if err != nil {
return nil, err
}
diff.TaskGroups = tgs
// Periodic diff
if pDiff := primitiveObjectDiff(j.Periodic, other.Periodic, nil, "Periodic", contextual); pDiff != nil {
diff.Objects = append(diff.Objects, pDiff)
}
// ParameterizedJob diff
if cDiff := parameterizedJobDiff(j.ParameterizedJob, other.ParameterizedJob, contextual); cDiff != nil {
diff.Objects = append(diff.Objects, cDiff)
}
// Check to see if there is a diff. We don't use reflect because we are
// filtering quite a few fields that will change on each diff.
if diff.Type == DiffTypeNone {
for _, fd := range diff.Fields {
if fd.Type != DiffTypeNone {
diff.Type = DiffTypeEdited
break
}
}
}
if diff.Type == DiffTypeNone {
for _, od := range diff.Objects {
if od.Type != DiffTypeNone {
diff.Type = DiffTypeEdited
break
}
}
}
if diff.Type == DiffTypeNone {
for _, tg := range diff.TaskGroups {
if tg.Type != DiffTypeNone {
diff.Type = DiffTypeEdited
break
}
}
}
return diff, nil
}
func (j *JobDiff) GoString() string {
out := fmt.Sprintf("Job %q (%s):\n", j.ID, j.Type)
for _, f := range j.Fields {
out += fmt.Sprintf("%#v\n", f)
}
for _, o := range j.Objects {
out += fmt.Sprintf("%#v\n", o)
}
for _, tg := range j.TaskGroups {
out += fmt.Sprintf("%#v\n", tg)
}
return out
}
// TaskGroupDiff contains the diff of two task groups.
type TaskGroupDiff struct {
Type DiffType
Name string
Fields []*FieldDiff
Objects []*ObjectDiff
Tasks []*TaskDiff
Updates map[string]uint64
}
// Diff returns a diff of two task groups. If contextual diff is enabled,
// objects' fields will be stored even if no diff occurred as long as one field
// changed.
func (tg *TaskGroup) Diff(other *TaskGroup, contextual bool) (*TaskGroupDiff, error) {
diff := &TaskGroupDiff{Type: DiffTypeNone}
var oldPrimitiveFlat, newPrimitiveFlat map[string]string
filter := []string{"Name"}
if tg == nil && other == nil {
return diff, nil
} else if tg == nil {
tg = &TaskGroup{}
diff.Type = DiffTypeAdded
diff.Name = other.Name
newPrimitiveFlat = flatmap.Flatten(other, filter, true)
} else if other == nil {
other = &TaskGroup{}
diff.Type = DiffTypeDeleted
diff.Name = tg.Name
oldPrimitiveFlat = flatmap.Flatten(tg, filter, true)
} else {
if !reflect.DeepEqual(tg, other) {
diff.Type = DiffTypeEdited
}
if tg.Name != other.Name {
return nil, fmt.Errorf("can not diff task groups with different names: %q and %q", tg.Name, other.Name)
}
diff.Name = other.Name
oldPrimitiveFlat = flatmap.Flatten(tg, filter, true)
newPrimitiveFlat = flatmap.Flatten(other, filter, true)
}
// Diff the primitive fields.
diff.Fields = fieldDiffs(oldPrimitiveFlat, newPrimitiveFlat, false)
// Constraints diff
conDiff := primitiveObjectSetDiff(
interfaceSlice(tg.Constraints),
interfaceSlice(other.Constraints),
[]string{"str"},
"Constraint",
contextual)
if conDiff != nil {
diff.Objects = append(diff.Objects, conDiff...)
}
// Restart policy diff
rDiff := primitiveObjectDiff(tg.RestartPolicy, other.RestartPolicy, nil, "RestartPolicy", contextual)
if rDiff != nil {
diff.Objects = append(diff.Objects, rDiff)
}
// EphemeralDisk diff
diskDiff := primitiveObjectDiff(tg.EphemeralDisk, other.EphemeralDisk, nil, "EphemeralDisk", contextual)
if diskDiff != nil {
diff.Objects = append(diff.Objects, diskDiff)
}
// Update diff
// COMPAT: Remove "Stagger" in 0.7.0.
if uDiff := primitiveObjectDiff(tg.Update, other.Update, []string{"Stagger"}, "Update", contextual); uDiff != nil {
diff.Objects = append(diff.Objects, uDiff)
}
// Tasks diff
tasks, err := taskDiffs(tg.Tasks, other.Tasks, contextual)
if err != nil {
return nil, err
}
diff.Tasks = tasks
return diff, nil
}
func (tg *TaskGroupDiff) GoString() string {
out := fmt.Sprintf("Group %q (%s):\n", tg.Name, tg.Type)
if len(tg.Updates) != 0 {
out += "Updates {\n"
for update, count := range tg.Updates {
out += fmt.Sprintf("%d %s\n", count, update)
}
out += "}\n"
}
for _, f := range tg.Fields {
out += fmt.Sprintf("%#v\n", f)
}
for _, o := range tg.Objects {
out += fmt.Sprintf("%#v\n", o)
}
for _, t := range tg.Tasks {
out += fmt.Sprintf("%#v\n", t)
}
return out
}
// TaskGroupDiffs diffs two sets of task groups. If contextual diff is enabled,
// objects' fields will be stored even if no diff occurred as long as one field
// changed.
func taskGroupDiffs(old, new []*TaskGroup, contextual bool) ([]*TaskGroupDiff, error) {
oldMap := make(map[string]*TaskGroup, len(old))
newMap := make(map[string]*TaskGroup, len(new))
for _, o := range old {
oldMap[o.Name] = o
}
for _, n := range new {
newMap[n.Name] = n
}
var diffs []*TaskGroupDiff
for name, oldGroup := range oldMap {
// Diff the same, deleted and edited
diff, err := oldGroup.Diff(newMap[name], contextual)
if err != nil {
return nil, err
}
diffs = append(diffs, diff)
}
for name, newGroup := range newMap {
// Diff the added
if old, ok := oldMap[name]; !ok {
diff, err := old.Diff(newGroup, contextual)
if err != nil {
return nil, err
}
diffs = append(diffs, diff)
}
}
sort.Sort(TaskGroupDiffs(diffs))
return diffs, nil
}
// For sorting TaskGroupDiffs
type TaskGroupDiffs []*TaskGroupDiff
func (tg TaskGroupDiffs) Len() int { return len(tg) }
func (tg TaskGroupDiffs) Swap(i, j int) { tg[i], tg[j] = tg[j], tg[i] }
func (tg TaskGroupDiffs) Less(i, j int) bool { return tg[i].Name < tg[j].Name }
// TaskDiff contains the diff of two Tasks
type TaskDiff struct {
Type DiffType
Name string
Fields []*FieldDiff
Objects []*ObjectDiff
Annotations []string
}
// Diff returns a diff of two tasks. If contextual diff is enabled, objects
// within the task will contain field information even if unchanged.
func (t *Task) Diff(other *Task, contextual bool) (*TaskDiff, error) {
diff := &TaskDiff{Type: DiffTypeNone}
var oldPrimitiveFlat, newPrimitiveFlat map[string]string
filter := []string{"Name", "Config"}
if t == nil && other == nil {
return diff, nil
} else if t == nil {
t = &Task{}
diff.Type = DiffTypeAdded
diff.Name = other.Name
newPrimitiveFlat = flatmap.Flatten(other, filter, true)
} else if other == nil {
other = &Task{}
diff.Type = DiffTypeDeleted
diff.Name = t.Name
oldPrimitiveFlat = flatmap.Flatten(t, filter, true)
} else {
if !reflect.DeepEqual(t, other) {
diff.Type = DiffTypeEdited
}
if t.Name != other.Name {
return nil, fmt.Errorf("can not diff tasks with different names: %q and %q", t.Name, other.Name)
}
diff.Name = other.Name
oldPrimitiveFlat = flatmap.Flatten(t, filter, true)
newPrimitiveFlat = flatmap.Flatten(other, filter, true)
}
// Diff the primitive fields.
diff.Fields = fieldDiffs(oldPrimitiveFlat, newPrimitiveFlat, false)
// Constraints diff
conDiff := primitiveObjectSetDiff(
interfaceSlice(t.Constraints),
interfaceSlice(other.Constraints),
[]string{"str"},
"Constraint",
contextual)
if conDiff != nil {
diff.Objects = append(diff.Objects, conDiff...)
}
// Config diff
if cDiff := configDiff(t.Config, other.Config, contextual); cDiff != nil {
diff.Objects = append(diff.Objects, cDiff)
}
// Resources diff
if rDiff := t.Resources.Diff(other.Resources, contextual); rDiff != nil {
diff.Objects = append(diff.Objects, rDiff)
}
// LogConfig diff
lDiff := primitiveObjectDiff(t.LogConfig, other.LogConfig, nil, "LogConfig", contextual)
if lDiff != nil {
diff.Objects = append(diff.Objects, lDiff)
}
// Dispatch payload diff
dDiff := primitiveObjectDiff(t.DispatchPayload, other.DispatchPayload, nil, "DispatchPayload", contextual)
if dDiff != nil {
diff.Objects = append(diff.Objects, dDiff)
}
// Artifacts diff
diffs := primitiveObjectSetDiff(
interfaceSlice(t.Artifacts),
interfaceSlice(other.Artifacts),
nil,
"Artifact",
contextual)
if diffs != nil {
diff.Objects = append(diff.Objects, diffs...)
}
// Services diff
if sDiffs := serviceDiffs(t.Services, other.Services, contextual); sDiffs != nil {
diff.Objects = append(diff.Objects, sDiffs...)
}
// Vault diff
vDiff := vaultDiff(t.Vault, other.Vault, contextual)
if vDiff != nil {
diff.Objects = append(diff.Objects, vDiff)
}
// Template diff
tmplDiffs := primitiveObjectSetDiff(
interfaceSlice(t.Templates),
interfaceSlice(other.Templates),
nil,
"Template",
contextual)
if tmplDiffs != nil {
diff.Objects = append(diff.Objects, tmplDiffs...)
}
return diff, nil
}
func (t *TaskDiff) GoString() string {
var out string
if len(t.Annotations) == 0 {
out = fmt.Sprintf("Task %q (%s):\n", t.Name, t.Type)
} else {
out = fmt.Sprintf("Task %q (%s) (%s):\n", t.Name, t.Type, strings.Join(t.Annotations, ","))
}
for _, f := range t.Fields {
out += fmt.Sprintf("%#v\n", f)
}
for _, o := range t.Objects {
out += fmt.Sprintf("%#v\n", o)
}
return out
}
// taskDiffs diffs a set of tasks. If contextual diff is enabled, unchanged
// fields within objects nested in the tasks will be returned.
func taskDiffs(old, new []*Task, contextual bool) ([]*TaskDiff, error) {
oldMap := make(map[string]*Task, len(old))
newMap := make(map[string]*Task, len(new))
for _, o := range old {
oldMap[o.Name] = o
}
for _, n := range new {
newMap[n.Name] = n
}
var diffs []*TaskDiff
for name, oldGroup := range oldMap {
// Diff the same, deleted and edited
diff, err := oldGroup.Diff(newMap[name], contextual)
if err != nil {
return nil, err
}
diffs = append(diffs, diff)
}
for name, newGroup := range newMap {
// Diff the added
if old, ok := oldMap[name]; !ok {
diff, err := old.Diff(newGroup, contextual)
if err != nil {
return nil, err
}
diffs = append(diffs, diff)
}
}
sort.Sort(TaskDiffs(diffs))
return diffs, nil
}
// For sorting TaskDiffs
type TaskDiffs []*TaskDiff
func (t TaskDiffs) Len() int { return len(t) }
func (t TaskDiffs) Swap(i, j int) { t[i], t[j] = t[j], t[i] }
func (t TaskDiffs) Less(i, j int) bool { return t[i].Name < t[j].Name }
// serviceDiff returns the diff of two service objects. If contextual diff is
// enabled, all fields will be returned, even if no diff occurred.
func serviceDiff(old, new *Service, contextual bool) *ObjectDiff {
diff := &ObjectDiff{Type: DiffTypeNone, Name: "Service"}
var oldPrimitiveFlat, newPrimitiveFlat map[string]string
if reflect.DeepEqual(old, new) {
return nil
} else if old == nil {
old = &Service{}
diff.Type = DiffTypeAdded
newPrimitiveFlat = flatmap.Flatten(new, nil, true)
} else if new == nil {
new = &Service{}
diff.Type = DiffTypeDeleted
oldPrimitiveFlat = flatmap.Flatten(old, nil, true)
} else {
diff.Type = DiffTypeEdited
oldPrimitiveFlat = flatmap.Flatten(old, nil, true)
newPrimitiveFlat = flatmap.Flatten(new, nil, true)
}
// Diff the primitive fields.
diff.Fields = fieldDiffs(oldPrimitiveFlat, newPrimitiveFlat, contextual)
// Checks diffs
if cDiffs := serviceCheckDiffs(old.Checks, new.Checks, contextual); cDiffs != nil {
diff.Objects = append(diff.Objects, cDiffs...)
}
return diff
}
// serviceDiffs diffs a set of services. If contextual diff is enabled, unchanged
// fields within objects nested in the tasks will be returned.
func serviceDiffs(old, new []*Service, contextual bool) []*ObjectDiff {
oldMap := make(map[string]*Service, len(old))
newMap := make(map[string]*Service, len(new))
for _, o := range old {
oldMap[o.Name] = o
}
for _, n := range new {
newMap[n.Name] = n
}
var diffs []*ObjectDiff
for name, oldService := range oldMap {
// Diff the same, deleted and edited
if diff := serviceDiff(oldService, newMap[name], contextual); diff != nil {
diffs = append(diffs, diff)
}
}
for name, newService := range newMap {
// Diff the added
if old, ok := oldMap[name]; !ok {
if diff := serviceDiff(old, newService, contextual); diff != nil {
diffs = append(diffs, diff)
}
}
}
sort.Sort(ObjectDiffs(diffs))
return diffs
}
// serviceCheckDiff returns the diff of two service check objects. If contextual
// diff is enabled, all fields will be returned, even if no diff occurred.
func serviceCheckDiff(old, new *ServiceCheck, contextual bool) *ObjectDiff {
diff := &ObjectDiff{Type: DiffTypeNone, Name: "Check"}
var oldPrimitiveFlat, newPrimitiveFlat map[string]string
if reflect.DeepEqual(old, new) {
return nil
} else if old == nil {
old = &ServiceCheck{}
diff.Type = DiffTypeAdded
newPrimitiveFlat = flatmap.Flatten(new, nil, true)
} else if new == nil {
new = &ServiceCheck{}
diff.Type = DiffTypeDeleted
oldPrimitiveFlat = flatmap.Flatten(old, nil, true)
} else {
diff.Type = DiffTypeEdited
oldPrimitiveFlat = flatmap.Flatten(old, nil, true)
newPrimitiveFlat = flatmap.Flatten(new, nil, true)
}
// Diff the primitive fields.
diff.Fields = fieldDiffs(oldPrimitiveFlat, newPrimitiveFlat, contextual)
// Diff Header
if headerDiff := checkHeaderDiff(old.Header, new.Header, contextual); headerDiff != nil {
diff.Objects = append(diff.Objects, headerDiff)
}
return diff
}
// checkHeaderDiff returns the diff of two service check header objects. If
// contextual diff is enabled, all fields will be returned, even if no diff
// occurred.
func checkHeaderDiff(old, new map[string][]string, contextual bool) *ObjectDiff {
diff := &ObjectDiff{Type: DiffTypeNone, Name: "Header"}
if reflect.DeepEqual(old, new) {
return nil
} else if len(old) == 0 {
diff.Type = DiffTypeAdded
} else if len(new) == 0 {
diff.Type = DiffTypeDeleted
} else {
diff.Type = DiffTypeEdited
}
oldFlat := flatmap.Flatten(old, nil, false)
newFlat := flatmap.Flatten(new, nil, false)
diff.Fields = fieldDiffs(oldFlat, newFlat, contextual)
return diff
}
// serviceCheckDiffs diffs a set of service checks. If contextual diff is
// enabled, unchanged fields within objects nested in the tasks will be
// returned.
func serviceCheckDiffs(old, new []*ServiceCheck, contextual bool) []*ObjectDiff {
oldMap := make(map[string]*ServiceCheck, len(old))
newMap := make(map[string]*ServiceCheck, len(new))
for _, o := range old {
oldMap[o.Name] = o
}
for _, n := range new {
newMap[n.Name] = n
}
var diffs []*ObjectDiff
for name, oldCheck := range oldMap {
// Diff the same, deleted and edited
if diff := serviceCheckDiff(oldCheck, newMap[name], contextual); diff != nil {
diffs = append(diffs, diff)
}
}
for name, newCheck := range newMap {
// Diff the added
if old, ok := oldMap[name]; !ok {
if diff := serviceCheckDiff(old, newCheck, contextual); diff != nil {
diffs = append(diffs, diff)
}
}
}
sort.Sort(ObjectDiffs(diffs))
return diffs
}
// vaultDiff returns the diff of two vault objects. If contextual diff is
// enabled, all fields will be returned, even if no diff occurred.
func vaultDiff(old, new *Vault, contextual bool) *ObjectDiff {
diff := &ObjectDiff{Type: DiffTypeNone, Name: "Vault"}
var oldPrimitiveFlat, newPrimitiveFlat map[string]string
if reflect.DeepEqual(old, new) {
return nil
} else if old == nil {
old = &Vault{}
diff.Type = DiffTypeAdded
newPrimitiveFlat = flatmap.Flatten(new, nil, true)
} else if new == nil {
new = &Vault{}
diff.Type = DiffTypeDeleted
oldPrimitiveFlat = flatmap.Flatten(old, nil, true)
} else {
diff.Type = DiffTypeEdited
oldPrimitiveFlat = flatmap.Flatten(old, nil, true)
newPrimitiveFlat = flatmap.Flatten(new, nil, true)
}
// Diff the primitive fields.
diff.Fields = fieldDiffs(oldPrimitiveFlat, newPrimitiveFlat, contextual)
// Policies diffs
if setDiff := stringSetDiff(old.Policies, new.Policies, "Policies", contextual); setDiff != nil {
diff.Objects = append(diff.Objects, setDiff)
}
return diff
}
// parameterizedJobDiff returns the diff of two parameterized job objects. If
// contextual diff is enabled, all fields will be returned, even if no diff
// occurred.
func parameterizedJobDiff(old, new *ParameterizedJobConfig, contextual bool) *ObjectDiff {
diff := &ObjectDiff{Type: DiffTypeNone, Name: "ParameterizedJob"}
var oldPrimitiveFlat, newPrimitiveFlat map[string]string
if reflect.DeepEqual(old, new) {
return nil
} else if old == nil {
old = &ParameterizedJobConfig{}
diff.Type = DiffTypeAdded
newPrimitiveFlat = flatmap.Flatten(new, nil, true)
} else if new == nil {
new = &ParameterizedJobConfig{}
diff.Type = DiffTypeDeleted
oldPrimitiveFlat = flatmap.Flatten(old, nil, true)
} else {
diff.Type = DiffTypeEdited
oldPrimitiveFlat = flatmap.Flatten(old, nil, true)
newPrimitiveFlat = flatmap.Flatten(new, nil, true)
}
// Diff the primitive fields.
diff.Fields = fieldDiffs(oldPrimitiveFlat, newPrimitiveFlat, contextual)
// Meta diffs
if optionalDiff := stringSetDiff(old.MetaOptional, new.MetaOptional, "MetaOptional", contextual); optionalDiff != nil {
diff.Objects = append(diff.Objects, optionalDiff)
}
if requiredDiff := stringSetDiff(old.MetaRequired, new.MetaRequired, "MetaRequired", contextual); requiredDiff != nil {
diff.Objects = append(diff.Objects, requiredDiff)
}
return diff
}
// Diff returns a diff of two resource objects. If contextual diff is enabled,
// non-changed fields will still be returned.
func (r *Resources) Diff(other *Resources, contextual bool) *ObjectDiff {
diff := &ObjectDiff{Type: DiffTypeNone, Name: "Resources"}
var oldPrimitiveFlat, newPrimitiveFlat map[string]string
if reflect.DeepEqual(r, other) {
return nil
} else if r == nil {
r = &Resources{}
diff.Type = DiffTypeAdded
newPrimitiveFlat = flatmap.Flatten(other, nil, true)
} else if other == nil {
other = &Resources{}
diff.Type = DiffTypeDeleted
oldPrimitiveFlat = flatmap.Flatten(r, nil, true)
} else {
diff.Type = DiffTypeEdited
oldPrimitiveFlat = flatmap.Flatten(r, nil, true)
newPrimitiveFlat = flatmap.Flatten(other, nil, true)
}
// Diff the primitive fields.
diff.Fields = fieldDiffs(oldPrimitiveFlat, newPrimitiveFlat, contextual)
// Network Resources diff
if nDiffs := networkResourceDiffs(r.Networks, other.Networks, contextual); nDiffs != nil {
diff.Objects = append(diff.Objects, nDiffs...)
}
return diff
}
// Diff returns a diff of two network resources. If contextual diff is enabled,
// non-changed fields will still be returned.
func (r *NetworkResource) Diff(other *NetworkResource, contextual bool) *ObjectDiff {
diff := &ObjectDiff{Type: DiffTypeNone, Name: "Network"}
var oldPrimitiveFlat, newPrimitiveFlat map[string]string
filter := []string{"Device", "CIDR", "IP"}
if reflect.DeepEqual(r, other) {
return nil
} else if r == nil {
r = &NetworkResource{}
diff.Type = DiffTypeAdded
newPrimitiveFlat = flatmap.Flatten(other, filter, true)
} else if other == nil {
other = &NetworkResource{}
diff.Type = DiffTypeDeleted
oldPrimitiveFlat = flatmap.Flatten(r, filter, true)
} else {
diff.Type = DiffTypeEdited
oldPrimitiveFlat = flatmap.Flatten(r, filter, true)
newPrimitiveFlat = flatmap.Flatten(other, filter, true)
}
// Diff the primitive fields.
diff.Fields = fieldDiffs(oldPrimitiveFlat, newPrimitiveFlat, contextual)
// Port diffs
resPorts := portDiffs(r.ReservedPorts, other.ReservedPorts, false, contextual)
dynPorts := portDiffs(r.DynamicPorts, other.DynamicPorts, true, contextual)
if resPorts != nil {
diff.Objects = append(diff.Objects, resPorts...)
}
if dynPorts != nil {
diff.Objects = append(diff.Objects, dynPorts...)
}
return diff
}
// networkResourceDiffs diffs a set of NetworkResources. If contextual diff is enabled,
// non-changed fields will still be returned.
func networkResourceDiffs(old, new []*NetworkResource, contextual bool) []*ObjectDiff {
makeSet := func(objects []*NetworkResource) map[string]*NetworkResource {
objMap := make(map[string]*NetworkResource, len(objects))
for _, obj := range objects {
hash, err := hashstructure.Hash(obj, nil)
if err != nil {
panic(err)
}
objMap[fmt.Sprintf("%d", hash)] = obj
}
return objMap
}
oldSet := makeSet(old)
newSet := makeSet(new)
var diffs []*ObjectDiff
for k, oldV := range oldSet {
if newV, ok := newSet[k]; !ok {
if diff := oldV.Diff(newV, contextual); diff != nil {
diffs = append(diffs, diff)
}
}
}
for k, newV := range newSet {
if oldV, ok := oldSet[k]; !ok {
if diff := oldV.Diff(newV, contextual); diff != nil {
diffs = append(diffs, diff)
}
}
}
sort.Sort(ObjectDiffs(diffs))
return diffs
}
// portDiffs returns the diff of two sets of ports. The dynamic flag marks the
// set of ports as being Dynamic ports versus Static ports. If contextual diff is enabled,
// non-changed fields will still be returned.
func portDiffs(old, new []Port, dynamic bool, contextual bool) []*ObjectDiff {
makeSet := func(ports []Port) map[string]Port {
portMap := make(map[string]Port, len(ports))
for _, port := range ports {
portMap[port.Label] = port
}
return portMap
}
oldPorts := makeSet(old)
newPorts := makeSet(new)
var filter []string
name := "Static Port"
if dynamic {
filter = []string{"Value"}
name = "Dynamic Port"
}
var diffs []*ObjectDiff
for portLabel, oldPort := range oldPorts {
// Diff the same, deleted and edited
if newPort, ok := newPorts[portLabel]; ok {
diff := primitiveObjectDiff(oldPort, newPort, filter, name, contextual)
if diff != nil {
diffs = append(diffs, diff)
}
} else {
diff := primitiveObjectDiff(oldPort, nil, filter, name, contextual)
if diff != nil {
diffs = append(diffs, diff)
}
}
}
for label, newPort := range newPorts {
// Diff the added
if _, ok := oldPorts[label]; !ok {
diff := primitiveObjectDiff(nil, newPort, filter, name, contextual)
if diff != nil {
diffs = append(diffs, diff)
}
}
}
sort.Sort(ObjectDiffs(diffs))
return diffs
}
// configDiff returns the diff of two Task Config objects. If contextual diff is
// enabled, all fields will be returned, even if no diff occurred.
func configDiff(old, new map[string]interface{}, contextual bool) *ObjectDiff {
diff := &ObjectDiff{Type: DiffTypeNone, Name: "Config"}
if reflect.DeepEqual(old, new) {
return nil
} else if len(old) == 0 {
diff.Type = DiffTypeAdded
} else if len(new) == 0 {
diff.Type = DiffTypeDeleted
} else {
diff.Type = DiffTypeEdited
}
// Diff the primitive fields.
oldPrimitiveFlat := flatmap.Flatten(old, nil, false)
newPrimitiveFlat := flatmap.Flatten(new, nil, false)
diff.Fields = fieldDiffs(oldPrimitiveFlat, newPrimitiveFlat, contextual)
return diff
}
// ObjectDiff contains the diff of two generic objects.
type ObjectDiff struct {
Type DiffType
Name string
Fields []*FieldDiff
Objects []*ObjectDiff
}
func (o *ObjectDiff) GoString() string {
out := fmt.Sprintf("\n%q (%s) {\n", o.Name, o.Type)
for _, f := range o.Fields {
out += fmt.Sprintf("%#v\n", f)
}
for _, o := range o.Objects {
out += fmt.Sprintf("%#v\n", o)
}
out += "}"
return out
}
func (o *ObjectDiff) Less(other *ObjectDiff) bool {
if reflect.DeepEqual(o, other) {
return false
} else if other == nil {
return false
} else if o == nil {
return true
}
if o.Name != other.Name {
return o.Name < other.Name
}
if o.Type != other.Type {
return o.Type.Less(other.Type)
}
if lO, lOther := len(o.Fields), len(other.Fields); lO != lOther {
return lO < lOther
}
if lO, lOther := len(o.Objects), len(other.Objects); lO != lOther {
return lO < lOther
}
// Check each field
sort.Sort(FieldDiffs(o.Fields))
sort.Sort(FieldDiffs(other.Fields))
for i, oV := range o.Fields {
if oV.Less(other.Fields[i]) {
return true
}
}
// Check each object
sort.Sort(ObjectDiffs(o.Objects))
sort.Sort(ObjectDiffs(other.Objects))
for i, oV := range o.Objects {
if oV.Less(other.Objects[i]) {
return true
}
}
return false
}
// For sorting ObjectDiffs
type ObjectDiffs []*ObjectDiff
func (o ObjectDiffs) Len() int { return len(o) }
func (o ObjectDiffs) Swap(i, j int) { o[i], o[j] = o[j], o[i] }
func (o ObjectDiffs) Less(i, j int) bool { return o[i].Less(o[j]) }
type FieldDiff struct {
Type DiffType
Name string
Old, New string
Annotations []string
}
// fieldDiff returns a FieldDiff if old and new are different otherwise, it
// returns nil. If contextual diff is enabled, even non-changed fields will be
// returned.
func fieldDiff(old, new, name string, contextual bool) *FieldDiff {
diff := &FieldDiff{Name: name, Type: DiffTypeNone}