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openapi: Fetch protobuf rather than Json

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This is much faster.

Kubernetes-commit: 224dba9a136e3e4014d88b3c2546418066bac026
This commit is contained in:
Antoine Pelisse
2017-05-26 14:00:24 -07:00
committed by Kubernetes Publisher
parent 5e440ec3fc
commit 13c848bad2
7 changed files with 89 additions and 50 deletions
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19
discovery/discovery_client.go
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@@ -24,9 +24,9 @@ import (
"strings"
"github.com/emicklei/go-restful-swagger12"
"github.com/golang/protobuf/proto"
"github.com/googleapis/gnostic/OpenAPIv2"
"github.com/go-openapi/loads"
"github.com/go-openapi/spec"
"k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
@@ -97,7 +97,7 @@ type SwaggerSchemaInterface interface {
// OpenAPISchemaInterface has a method to retrieve the open API schema.
type OpenAPISchemaInterface interface {
// OpenAPISchema retrieves and parses the swagger API schema the server supports.
OpenAPISchema() (*spec.Swagger, error)
OpenAPISchema() (*openapi_v2.Document, error)
}
// DiscoveryClient implements the functions that discover server-supported API groups,
@@ -375,19 +375,18 @@ func (d *DiscoveryClient) SwaggerSchema(version schema.GroupVersion) (*swagger.A
return &schema, nil
}
// OpenAPISchema fetches the open api schema using a rest client and parses the json.
// Warning: this is very expensive (~1.2s)
func (d *DiscoveryClient) OpenAPISchema() (*spec.Swagger, error) {
data, err := d.restClient.Get().AbsPath("/swagger.json").Do().Raw()
// OpenAPISchema fetches the open api schema using a rest client and parses the proto.
func (d *DiscoveryClient) OpenAPISchema() (*openapi_v2.Document, error) {
data, err := d.restClient.Get().AbsPath("/swagger-2.0.0.pb-v1").Do().Raw()
if err != nil {
return nil, err
}
msg := json.RawMessage(data)
doc, err := loads.Analyzed(msg, "")
document := &openapi_v2.Document{}
err = proto.Unmarshal(data, document)
if err != nil {
return nil, err
}
return doc.Spec(), err
return document, nil
}
// withRetries retries the given recovery function in case the groups supported by the server change after ServerGroup() returns.