open-nomad/command/agent/scaling_endpoint.go

108 lines
2.6 KiB
Go

// Copyright (c) HashiCorp, Inc.
// SPDX-License-Identifier: MPL-2.0
package agent
import (
"net/http"
"strings"
"github.com/hashicorp/nomad/api"
"github.com/hashicorp/nomad/nomad/structs"
)
func (s *HTTPServer) ScalingPoliciesRequest(resp http.ResponseWriter, req *http.Request) (interface{}, error) {
switch req.Method {
case http.MethodGet:
return s.scalingPoliciesListRequest(resp, req)
default:
return nil, CodedError(405, ErrInvalidMethod)
}
}
func (s *HTTPServer) scalingPoliciesListRequest(resp http.ResponseWriter, req *http.Request) (interface{}, error) {
args := structs.ScalingPolicyListRequest{}
if s.parse(resp, req, &args.Region, &args.QueryOptions) {
return nil, nil
}
if job := req.URL.Query().Get("job"); job != "" {
args.Job = job
}
if tpe := req.URL.Query().Get("type"); tpe != "" {
args.Type = tpe
}
var out structs.ScalingPolicyListResponse
if err := s.agent.RPC("Scaling.ListPolicies", &args, &out); err != nil {
return nil, err
}
setMeta(resp, &out.QueryMeta)
if out.Policies == nil {
out.Policies = make([]*structs.ScalingPolicyListStub, 0)
}
return out.Policies, nil
}
func (s *HTTPServer) ScalingPolicySpecificRequest(resp http.ResponseWriter, req *http.Request) (interface{}, error) {
path := strings.TrimPrefix(req.URL.Path, "/v1/scaling/policy/")
return s.scalingPolicyCRUD(resp, req, path)
}
func (s *HTTPServer) scalingPolicyCRUD(resp http.ResponseWriter, req *http.Request,
policyID string) (interface{}, error) {
switch req.Method {
case http.MethodGet:
return s.scalingPolicyQuery(resp, req, policyID)
default:
return nil, CodedError(405, ErrInvalidMethod)
}
}
func (s *HTTPServer) scalingPolicyQuery(resp http.ResponseWriter, req *http.Request,
policyID string) (interface{}, error) {
args := structs.ScalingPolicySpecificRequest{
ID: policyID,
}
if s.parse(resp, req, &args.Region, &args.QueryOptions) {
return nil, nil
}
var out structs.SingleScalingPolicyResponse
if err := s.agent.RPC("Scaling.GetPolicy", &args, &out); err != nil {
return nil, err
}
setMeta(resp, &out.QueryMeta)
if out.Policy == nil {
return nil, CodedError(404, "policy not found")
}
return out.Policy, nil
}
func ApiScalingPolicyToStructs(count int, ap *api.ScalingPolicy) *structs.ScalingPolicy {
p := structs.ScalingPolicy{
Type: ap.Type,
Policy: ap.Policy,
Target: map[string]string{},
}
if ap.Enabled != nil {
p.Enabled = *ap.Enabled
} else {
p.Enabled = true
}
if ap.Max != nil {
p.Max = *ap.Max
} else {
// catch this in Validate
p.Max = -1
}
if ap.Min != nil {
p.Min = *ap.Min
} else {
p.Min = int64(count)
}
return &p
}