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api.go
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api.go
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package replicatedapp
import (
"fmt"
"io/ioutil"
"net/http"
"net/url"
"github.com/pkg/errors"
kotsv1beta1 "github.com/replicatedhq/kots/kotskinds/apis/kots/v1beta1"
"github.com/replicatedhq/kots/kotskinds/client/kotsclientset/scheme"
"github.com/replicatedhq/kots/pkg/util"
)
type ApplicationMetadata struct {
Manifest []byte
Branding []byte
}
const DefaultMetadata = `apiVersion: kots.io/v1beta1
kind: Application
metadata:
name: "default-application"
spec:
title: "the application"
icon: https://cdn2.iconfinder.com/data/icons/mixd/512/16_kubernetes-512.png
releaseNotes: |
release notes`
type LicenseData struct {
LicenseBytes []byte
License *kotsv1beta1.License
}
func GetLatestLicense(license *kotsv1beta1.License) (*LicenseData, error) {
url := fmt.Sprintf("%s/license/%s", license.Spec.Endpoint, license.Spec.AppSlug)
licenseData, err := getLicenseFromAPI(url, license.Spec.LicenseID)
if err != nil {
return nil, errors.Wrap(err, "failed to get license from api")
}
return licenseData, nil
}
func GetLatestLicenseForHelm(licenseID string) (*LicenseData, error) {
url := fmt.Sprintf("%s/license", util.GetReplicatedAPIEndpoint())
licenseData, err := getLicenseFromAPI(url, licenseID)
if err != nil {
return nil, errors.Wrap(err, "failed to get helm license from api")
}
return licenseData, nil
}
func getLicenseFromAPI(url string, licenseID string) (*LicenseData, error) {
req, err := util.NewRequest("GET", url, nil)
if err != nil {
return nil, errors.Wrap(err, "failed to call newrequest")
}
req.SetBasicAuth(licenseID, licenseID)
resp, err := http.DefaultClient.Do(req)
if err != nil {
return nil, errors.Wrap(err, "failed to execute get request")
}
defer resp.Body.Close()
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
return nil, errors.Wrap(err, "failed to load response")
}
if resp.StatusCode >= 400 {
return nil, errors.Errorf("unexpected result from get request: %d, data: %s", resp.StatusCode, body)
}
decode := scheme.Codecs.UniversalDeserializer().Decode
obj, _, err := decode(body, nil, nil)
if err != nil {
return nil, errors.Wrap(err, "failed to decode latest license data")
}
data := &LicenseData{
LicenseBytes: body,
License: obj.(*kotsv1beta1.License),
}
return data, nil
}
// GetApplicationMetadata will return any available application yaml from
// the upstream. If there is no application.yaml, it will return
// a placeholder one
func GetApplicationMetadata(upstream *url.URL, versionLabel string) (*ApplicationMetadata, error) {
host := util.GetReplicatedAPIEndpoint()
manifest, err := getApplicationMetadataFromHost(host, "metadata", upstream, versionLabel)
if err != nil {
return nil, errors.Wrapf(err, "failed to get metadata from %s", host)
}
if len(manifest) == 0 {
manifest = []byte(DefaultMetadata)
}
branding, err := getApplicationMetadataFromHost(host, "branding", upstream, versionLabel)
if err != nil {
return nil, errors.Wrapf(err, "failed to get branding from %s", host)
}
return &ApplicationMetadata{
Manifest: manifest,
Branding: branding,
}, nil
}
func getApplicationMetadataFromHost(host string, endpoint string, upstream *url.URL, versionLabel string) ([]byte, error) {
r, err := ParseReplicatedURL(upstream)
if err != nil {
return nil, errors.Wrap(err, "failed to parse replicated upstream")
}
if r.VersionLabel != nil && *r.VersionLabel != "" && versionLabel != "" && *r.VersionLabel != versionLabel {
return nil, errors.Errorf("version label in upstream (%q) does not match version label in parameter (%q)", *r.VersionLabel, versionLabel)
}
getUrl := fmt.Sprintf("%s/%s/%s", host, endpoint, url.PathEscape(r.AppSlug))
if r.Channel != nil {
getUrl = fmt.Sprintf("%s/%s", getUrl, url.PathEscape(*r.Channel))
}
v := url.Values{}
if r.VersionLabel != nil && *r.VersionLabel != "" {
v.Set("versionLabel", *r.VersionLabel)
} else if versionLabel != "" {
v.Set("versionLabel", versionLabel)
}
getUrl = fmt.Sprintf("%s?%s", getUrl, v.Encode())
getReq, err := util.NewRequest("GET", getUrl, nil)
if err != nil {
return nil, errors.Wrap(err, "failed to call newrequest")
}
getResp, err := http.DefaultClient.Do(getReq)
if err != nil {
return nil, errors.Wrap(err, "failed to execute get request")
}
defer getResp.Body.Close()
if getResp.StatusCode == 404 {
// no metadata is not an error
return nil, nil
}
if getResp.StatusCode >= 400 {
return nil, errors.Errorf("unexpected result from get request: %d", getResp.StatusCode)
}
respBody, err := ioutil.ReadAll(getResp.Body)
if err != nil {
return nil, errors.Wrap(err, "failed to read response body")
}
return respBody, nil
}