277 lines
7.2 KiB
Go
277 lines
7.2 KiB
Go
/*
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Copyright 2017 The go-marathon Authors All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package marathon
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import (
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"fmt"
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)
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// Pod is the definition for an pod in marathon
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type Pod struct {
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ID string `json:"id,omitempty"`
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Labels map[string]string `json:"labels,omitempty"`
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Version string `json:"version,omitempty"`
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User string `json:"user,omitempty"`
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// Non-secret environment variables. Actual secrets are stored in Secrets
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// Magic happens at marshaling/unmarshaling to get them into the correct schema
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Env map[string]string `json:"-"`
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Secrets map[string]Secret `json:"-"`
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Containers []*PodContainer `json:"containers,omitempty"`
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Volumes []*PodVolume `json:"volumes,omitempty"`
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Networks []*PodNetwork `json:"networks,omitempty"`
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Scaling *PodScalingPolicy `json:"scaling,omitempty"`
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Scheduling *PodSchedulingPolicy `json:"scheduling,omitempty"`
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ExecutorResources *ExecutorResources `json:"executorResources,omitempty"`
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}
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// PodScalingPolicy is the scaling policy of the pod
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type PodScalingPolicy struct {
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Kind string `json:"kind"`
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Instances int `json:"instances"`
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MaxInstances int `json:"maxInstances,omitempty"`
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}
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// NewPod create an empty pod
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func NewPod() *Pod {
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return &Pod{
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Labels: map[string]string{},
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Env: map[string]string{},
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Containers: []*PodContainer{},
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Secrets: map[string]Secret{},
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Volumes: []*PodVolume{},
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Networks: []*PodNetwork{},
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}
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}
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// Name sets the name / ID of the pod i.e. the identifier for this pod
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func (p *Pod) Name(id string) *Pod {
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p.ID = validateID(id)
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return p
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}
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// SetUser sets the user to run the pod as
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func (p *Pod) SetUser(user string) *Pod {
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p.User = user
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return p
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}
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// EmptyLabels empties the labels in a pod
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func (p *Pod) EmptyLabels() *Pod {
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p.Labels = make(map[string]string)
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return p
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}
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// AddLabel adds a label to a pod
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func (p *Pod) AddLabel(key, value string) *Pod {
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p.Labels[key] = value
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return p
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}
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// SetLabels sets the labels for a pod
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func (p *Pod) SetLabels(labels map[string]string) *Pod {
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p.Labels = labels
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return p
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}
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// EmptyEnvs empties the environment variables for a pod
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func (p *Pod) EmptyEnvs() *Pod {
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p.Env = make(map[string]string)
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return p
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}
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// AddEnv adds an environment variable to a pod
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func (p *Pod) AddEnv(name, value string) *Pod {
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if p.Env == nil {
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p = p.EmptyEnvs()
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}
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p.Env[name] = value
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return p
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}
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// ExtendEnv extends the environment with the new environment variables
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func (p *Pod) ExtendEnv(env map[string]string) *Pod {
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if p.Env == nil {
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p = p.EmptyEnvs()
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}
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for k, v := range env {
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p.AddEnv(k, v)
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}
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return p
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}
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// AddContainer adds a container to a pod
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func (p *Pod) AddContainer(container *PodContainer) *Pod {
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p.Containers = append(p.Containers, container)
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return p
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}
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// EmptySecrets empties the secret sources in a pod
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func (p *Pod) EmptySecrets() *Pod {
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p.Secrets = make(map[string]Secret)
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return p
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}
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// GetSecretSource gets the source of the named secret
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func (p *Pod) GetSecretSource(name string) (string, error) {
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if val, ok := p.Secrets[name]; ok {
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return val.Source, nil
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}
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return "", fmt.Errorf("secret does not exist")
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}
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// AddSecret adds the secret to the pod
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func (p *Pod) AddSecret(envVar, secretName, sourceName string) *Pod {
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if p.Secrets == nil {
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p = p.EmptySecrets()
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}
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p.Secrets[secretName] = Secret{EnvVar: envVar, Source: sourceName}
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return p
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}
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// AddVolume adds a volume to a pod
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func (p *Pod) AddVolume(vol *PodVolume) *Pod {
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p.Volumes = append(p.Volumes, vol)
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return p
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}
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// AddNetwork adds a PodNetwork to a pod
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func (p *Pod) AddNetwork(net *PodNetwork) *Pod {
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p.Networks = append(p.Networks, net)
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return p
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}
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// Count sets the count of the pod
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func (p *Pod) Count(count int) *Pod {
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p.Scaling = &PodScalingPolicy{
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Kind: "fixed",
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Instances: count,
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}
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return p
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}
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// SetPodSchedulingPolicy sets the PodSchedulingPolicy of a pod
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func (p *Pod) SetPodSchedulingPolicy(policy *PodSchedulingPolicy) *Pod {
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p.Scheduling = policy
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return p
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}
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// SetExecutorResources sets the resources for the pod executor
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func (p *Pod) SetExecutorResources(resources *ExecutorResources) *Pod {
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p.ExecutorResources = resources
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return p
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}
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// SupportsPods determines if this version of marathon supports pods
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// If HEAD returns 200 it does
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func (r *marathonClient) SupportsPods() (bool, error) {
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if err := r.apiHead(marathonAPIPods, nil); err != nil {
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// If we get a 404 we can return a strict false, otherwise it could be
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// a valid error
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if apiErr, ok := err.(*APIError); ok && apiErr.ErrCode == ErrCodeNotFound {
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return false, nil
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}
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return false, err
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}
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return true, nil
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}
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// Pod gets a pod object from marathon by name
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func (r *marathonClient) Pod(name string) (*Pod, error) {
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uri := buildPodURI(name)
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result := new(Pod)
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if err := r.apiGet(uri, nil, result); err != nil {
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return nil, err
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}
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return result, nil
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}
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// Pods gets all pods from marathon
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func (r *marathonClient) Pods() ([]Pod, error) {
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var result []Pod
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if err := r.apiGet(marathonAPIPods, nil, &result); err != nil {
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return nil, err
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}
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return result, nil
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}
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// CreatePod creates a new pod in Marathon
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func (r *marathonClient) CreatePod(pod *Pod) (*Pod, error) {
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result := new(Pod)
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if err := r.apiPost(marathonAPIPods, &pod, result); err != nil {
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return nil, err
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}
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return result, nil
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}
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// DeletePod deletes a pod from marathon
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func (r *marathonClient) DeletePod(name string, force bool) (*DeploymentID, error) {
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uri := fmt.Sprintf("%s?force=%v", buildPodURI(name), force)
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deployID := new(DeploymentID)
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if err := r.apiDelete(uri, nil, deployID); err != nil {
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return nil, err
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}
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return deployID, nil
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}
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// UpdatePod creates a new pod in Marathon
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func (r *marathonClient) UpdatePod(pod *Pod, force bool) (*Pod, error) {
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uri := fmt.Sprintf("%s?force=%v", buildPodURI(pod.ID), force)
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result := new(Pod)
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if err := r.apiPut(uri, pod, result); err != nil {
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return nil, err
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}
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return result, nil
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}
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// PodVersions gets all the deployed versions of a pod
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func (r *marathonClient) PodVersions(name string) ([]string, error) {
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uri := buildPodVersionURI(name)
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var result []string
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if err := r.apiGet(uri, nil, &result); err != nil {
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return nil, err
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}
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return result, nil
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}
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// PodByVersion gets a pod by a version identifier
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func (r *marathonClient) PodByVersion(name, version string) (*Pod, error) {
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uri := fmt.Sprintf("%s/%s", buildPodVersionURI(name), version)
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result := new(Pod)
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if err := r.apiGet(uri, nil, result); err != nil {
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return nil, err
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}
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return result, nil
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}
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func buildPodVersionURI(name string) string {
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return fmt.Sprintf("%s/%s::versions", marathonAPIPods, trimRootPath(name))
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}
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func buildPodURI(path string) string {
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return fmt.Sprintf("%s/%s", marathonAPIPods, trimRootPath(path))
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}
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