[#733] neofs-adm: fetch contracts release from Github

Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>

cmd/neofs-adm/internal/modules/morph/download.go

@@ -0,0 +1,50 @@
+package morph
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"io"
+	"net/http"
+	"os"
+	"strings"
+
+	"github.com/google/go-github/v39/github"
+	"github.com/spf13/cobra"
+)
+
+func downloadContractsFromGithub(cmd *cobra.Command) (string, error) {
+	gcl := github.NewClient(nil)
+	release, _, err := gcl.Repositories.GetLatestRelease(context.Background(), "nspcc-dev", "neofs-contract")
+	if err != nil {
+		return "", fmt.Errorf("can't fetch release info: %w", err)
+	}
+
+	cmd.Printf("Found %s (%s), downloading...\n", release.GetTagName(), release.GetName())
+
+	var url string
+	for _, a := range release.Assets {
+		if strings.HasPrefix(a.GetName(), "neofs-contract") {
+			url = a.GetBrowserDownloadURL()
+			break
+		}
+	}
+	if url == "" {
+		return "", errors.New("can't find contracts archive in release assets")
+	}
+
+	resp, err := http.Get(url)
+	if err != nil {
+		return "", fmt.Errorf("can't fetch contracts archive: %w", err)
+	}
+	defer resp.Body.Close()
+
+	f, err := os.CreateTemp("", "neofs-contract-*.tar.gz")
+	if err != nil {
+		return "", fmt.Errorf("can't allocate temporary file: %w", err)
+	}
+	defer f.Close()
+
+	_, err = io.Copy(f, resp.Body)
+	return f.Name(), err
+}

cmd/neofs-adm/internal/modules/morph/initialize.go

@@ -127,6 +127,14 @@ func newInitializeContext(cmd *cobra.Command, v *viper.Viper) (*initializeContex
 		if err != nil {
 			return nil, fmt.Errorf("missing contracts path: %w", err)
 		}
+		if ctrPath == "" {
+			cmd.Println("Contracts flag is missing, latest release will be fetched from Github.")
+			ctrPath, err = downloadContractsFromGithub(cmd)
+			if err != nil {
+				return nil, err
+			}
+			cmd.Printf("Saved to %s\n", ctrPath)
+		}
 	}
 
 	ns, err := c.GetNativeContracts()

go.mod

@@ -3,6 +3,7 @@ module github.com/nspcc-dev/neofs-node
 go 1.16
 
 require (
+	github.com/google/go-github/v39 v39.2.0
 	github.com/google/uuid v1.2.0
 	github.com/hashicorp/golang-lru v0.5.4
 	github.com/klauspost/compress v1.13.1

go.sum

@@ -227,8 +227,13 @@ github.com/google/go-cmp v0.5.1/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/
 github.com/google/go-cmp v0.5.2/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.3/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.4/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
-github.com/google/go-cmp v0.5.5 h1:Khx7svrCpmxxtHBq5j2mp/xVjsi8hQMfNLvJFAlrGgU=
 github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
+github.com/google/go-cmp v0.5.6 h1:BKbKCqvP6I+rmFHt06ZmyQtvB8xAkWdhFyr0ZUNZcxQ=
+github.com/google/go-cmp v0.5.6/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
+github.com/google/go-github/v39 v39.2.0 h1:rNNM311XtPOz5rDdsJXAp2o8F67X9FnROXTvto3aSnQ=
+github.com/google/go-github/v39 v39.2.0/go.mod h1:C1s8C5aCC9L+JXIYpJM5GYytdX52vC1bLvHEF1IhBrE=
+github.com/google/go-querystring v1.1.0 h1:AnCroh3fv4ZBgVIf1Iwtovgjaw/GiKJo8M8yD/fhyJ8=
+github.com/google/go-querystring v1.1.0/go.mod h1:Kcdr2DB4koayq7X8pmAG4sNG59So17icRSOU623lUBU=
 github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
 github.com/google/martian v2.1.0+incompatible/go.mod h1:9I4somxYTbIHy5NJKHRl3wXiIaQGbYVAs8BPL6v8lEs=
 github.com/google/martian/v3 v3.0.0/go.mod h1:y5Zk1BBys9G+gd6Jrk0W3cC1+ELVxBWuIGO+w/tUAp0=
@@ -594,8 +599,9 @@ golang.org/x/crypto v0.0.0-20200115085410-6d4e4cb37c7d/go.mod h1:LzIPMQfyMNhhGPh
 golang.org/x/crypto v0.0.0-20200510223506-06a226fb4e37/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
-golang.org/x/crypto v0.0.0-20210711020723-a769d52b0f97 h1:/UOmuWzQfxxo9UtlXMwuQU8CMgg1eZXqTRwkSQJWKOI=
 golang.org/x/crypto v0.0.0-20210711020723-a769d52b0f97/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
+golang.org/x/crypto v0.0.0-20210817164053-32db794688a5 h1:HWj/xjIHfjYU5nVXpTM0s39J9CbLn7Cc5a7IC5rwsMQ=
+golang.org/x/crypto v0.0.0-20210817164053-32db794688a5/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
 golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20190306152737-a1d7652674e8/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20190510132918-efd6b22b2522/go.mod h1:ZjyILWgesfNpC6sMxTJOJm9Kp84zZh5NQWvqDGG3Qr8=