working commit

pkg/repocli/getcatalog.go

@@ -0,0 +1,73 @@
+package repocli
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"net/http"
+	"strconv"
+)
+
+func (cli *Client) GetCatalog(ctx context.Context, rawrepo string) ([]string, error) {
+	var err error
+	list := make([]string, 0)
+	catdata, err := cli.getRawCatalog(ctx, rawrepo)
+	if err != nil {
+		return list, err
+	}
+	err = json.Unmarshal(catdata, &list)
+	if err != nil {
+		return list, err
+	}
+	return list, err
+}
+
+func (cli *Client) getRawCatalog(ctx context.Context, rawrepo string) ([]byte, error) {
+	var err error
+	var list []byte
+
+	ref, err := NewReferer(rawrepo)
+	if err != nil {
+		return list, err
+	}
+	uri := ref.Catalog()
+
+	req, err := http.NewRequestWithContext(ctx, http.MethodGet, uri, nil)
+	if err != nil {
+		return list, err
+	}
+	req.Header.Set("User-Agent", cli.userAgent)
+	req.Header.Set("Accept", "*/*")
+	resp, err := cli.httpClient.Do(req)
+	if err != nil {
+		return list, err
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode == http.StatusNotFound {
+		return list, err
+	}
+	if resp.StatusCode != http.StatusOK {
+		err := fmt.Errorf("Unxected response code %s", resp.Status)
+		return list, err
+	}
+	contentLength := resp.Header.Get("Content-Length")
+	if contentLength == "" {
+		err = errors.New("Empty Content-Length header")
+		return list, err
+	}
+	listSize, err := strconv.ParseInt(contentLength, 10, 64)
+	if err != nil {
+		return list, err
+	}
+	buffer := bytes.NewBuffer(nil)
+	recSize, err := Copy(ctx, buffer, resp.Body)
+	if listSize != recSize {
+		err := fmt.Errorf("Mismatch declared and actual size")
+		return list, err
+	}
+	list = buffer.Bytes()
+	return list, err
+}

pkg/repocli/getreferers.go

@@ -0,0 +1,70 @@
+package repocli
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"net/http"
+	"strconv"
+)
+
+func (cli *Client) GetReferers(ctx context.Context, rawrepo, digest string) ([]string, error) {
+	var err error
+	list := make([]string, 0)
+	tagdata, err := cli.getRawReferers(ctx, rawrepo, digest)
+	if err != nil {
+		return list, err
+	}
+	err = json.Unmarshal(tagdata, &list)
+	if err != nil {
+		return list, err
+	}
+	return list, err
+}
+
+func (cli *Client) getRawReferers(ctx context.Context, rawrepo, digest string) ([]byte, error) {
+	var err error
+	var list []byte
+
+	ref, err := NewReferer(rawrepo)
+	if err != nil {
+		return list, err
+	}
+	uri := ref.Referers(digest)
+
+	req, err := http.NewRequestWithContext(ctx, http.MethodGet, uri, nil)
+	if err != nil {
+		return list, err
+	}
+	req.Header.Set("User-Agent", cli.userAgent)
+	req.Header.Set("Accept", "*/*")
+	resp, err := cli.httpClient.Do(req)
+	if err != nil {
+		return list, err
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		err := fmt.Errorf("Unxected response code %s", resp.Status)
+		return list, err
+	}
+	contentLength := resp.Header.Get("Content-Length")
+	if contentLength == "" {
+		err = errors.New("Empty Content-Length header")
+		return list, err
+	}
+	listSize, err := strconv.ParseInt(contentLength, 10, 64)
+	if err != nil {
+		return list, err
+	}
+	buffer := bytes.NewBuffer(nil)
+	recSize, err := Copy(ctx, buffer, resp.Body)
+	if listSize != recSize {
+		err := fmt.Errorf("Mismatch declared and actual size")
+		return list, err
+	}
+	list = buffer.Bytes()
+	return list, err
+}

pkg/repocli/gettags.go

@@ -0,0 +1,70 @@
+package repocli
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"net/http"
+	"strconv"
+)
+
+func (cli *Client) GetTags(ctx context.Context, rawrepo string) ([]string, error) {
+	var err error
+	list := make([]string, 0)
+	tagdata, err := cli.getRawTags(ctx, rawrepo)
+	if err != nil {
+		return list, err
+	}
+	err = json.Unmarshal(tagdata, &list)
+	if err != nil {
+		return list, err
+	}
+	return list, err
+}
+
+func (cli *Client) getRawTags(ctx context.Context, rawrepo string) ([]byte, error) {
+	var err error
+	var list []byte
+
+	ref, err := NewReferer(rawrepo)
+	if err != nil {
+		return list, err
+	}
+	uri := ref.Tags()
+
+	req, err := http.NewRequestWithContext(ctx, http.MethodGet, uri, nil)
+	if err != nil {
+		return list, err
+	}
+	req.Header.Set("User-Agent", cli.userAgent)
+	req.Header.Set("Accept", "*/*")
+	resp, err := cli.httpClient.Do(req)
+	if err != nil {
+		return list, err
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		err := fmt.Errorf("Unxected response code %s", resp.Status)
+		return list, err
+	}
+	contentLength := resp.Header.Get("Content-Length")
+	if contentLength == "" {
+		err = errors.New("Empty Content-Length header")
+		return list, err
+	}
+	listSize, err := strconv.ParseInt(contentLength, 10, 64)
+	if err != nil {
+		return list, err
+	}
+	buffer := bytes.NewBuffer(nil)
+	recSize, err := Copy(ctx, buffer, resp.Body)
+	if listSize != recSize {
+		err := fmt.Errorf("Mismatch declared and actual size")
+		return list, err
+	}
+	list = buffer.Bytes()
+	return list, err
+}

pkg/repocli/referer.go

@@ -95,6 +95,21 @@ func (repo *Referer) Put(loc, digest string) (string, error) {
 	return out, err
 }
 
+func (repo *Referer) Tags() string {
+	curl := repo.urlobj.JoinPath("/v2", repo.base, "/tags/list")
+	return curl.String()
+}
+
+func (repo *Referer) Referers(digest string) string {
+	curl := repo.urlobj.JoinPath("/v2", repo.base, "/referrers/", digest)
+	return curl.String()
+}
+
+func (repo *Referer) Catalog() string {
+	curl := repo.urlobj.JoinPath("/v2/_catalog")
+	return curl.String()
+}
+
 func (repo *Referer) Userinfo() (string, string) {
 	return repo.user, repo.pass
 }