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travis, build, internal: use own Go bundle for PPA builds (ethereum#2…
…0240) * build: bump PPAs to Go 1.13 (via longsleep), keep Trusty on 1.11 * travis, build, vendor: use own Go bundle for PPA builds * travis, build, internal, vendor: smarter Go bundler, own untar * build: updated ci-notes with new Go bundling, only make, don't test
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,81 @@ | ||
| // Copyright 2019 The go-ethereum Authors | ||
| // This file is part of the go-ethereum library. | ||
| // | ||
| // The go-ethereum library is free software: you can redistribute it and/or modify | ||
| // it under the terms of the GNU Lesser General Public License as published by | ||
| // the Free Software Foundation, either version 3 of the License, or | ||
| // (at your option) any later version. | ||
| // | ||
| // The go-ethereum library is distributed in the hope that it will be useful, | ||
| // but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| // GNU Lesser General Public License for more details. | ||
| // | ||
| // You should have received a copy of the GNU Lesser General Public License | ||
| // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>. | ||
|
|
||
| package build | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "crypto/sha256" | ||
| "fmt" | ||
| "io/ioutil" | ||
| "net/http" | ||
| "os" | ||
| "path/filepath" | ||
| "strings" | ||
| ) | ||
|
|
||
| // EnsureGoSources ensures that path contains a file with the given SHA256 hash, | ||
| // and if not, it downloads a fresh Go source package from upstream and replaces | ||
| // path with it (if the hash matches). | ||
| func EnsureGoSources(version string, hash []byte, path string) error { | ||
| // Sanity check the destination path to ensure we don't do weird things | ||
| if !strings.HasSuffix(path, ".tar.gz") { | ||
| return fmt.Errorf("destination path (%s) must end with .tar.gz", path) | ||
| } | ||
| // If the file exists, validate it's hash | ||
| if archive, err := ioutil.ReadFile(path); err == nil { // Go sources are ~20MB, it's fine to read all | ||
| hasher := sha256.New() | ||
| hasher.Write(archive) | ||
| have := hasher.Sum(nil) | ||
|
|
||
| if bytes.Equal(have, hash) { | ||
| fmt.Printf("Go %s [%x] available at %s\n", version, hash, path) | ||
| return nil | ||
| } | ||
| fmt.Printf("Go %s hash mismatch (have %x, want %x) at %s, deleting old archive\n", version, have, hash, path) | ||
| if err := os.Remove(path); err != nil { | ||
| return err | ||
| } | ||
| } | ||
| // Archive missing or bad hash, download a new one | ||
| fmt.Printf("Downloading Go %s [want %x] into %s\n", version, hash, path) | ||
|
|
||
| res, err := http.Get(fmt.Sprintf("https://dl.google.com/go/go%s.src.tar.gz", version)) | ||
| if err != nil || res.StatusCode != http.StatusOK { | ||
| return fmt.Errorf("failed to access Go sources: code %d, err %v", res.StatusCode, err) | ||
| } | ||
| defer res.Body.Close() | ||
|
|
||
| archive, err := ioutil.ReadAll(res.Body) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| // Sanity check the downloaded archive, save if checks out | ||
| hasher := sha256.New() | ||
| hasher.Write(archive) | ||
|
|
||
| if have := hasher.Sum(nil); !bytes.Equal(have, hash) { | ||
| return fmt.Errorf("downloaded Go %s hash mismatch (have %x, want %x)", version, have, hash) | ||
| } | ||
| if err := os.MkdirAll(filepath.Dir(path), 0755); err != nil { | ||
| return err | ||
| } | ||
| if err := ioutil.WriteFile(path, archive, 0644); err != nil { | ||
| return err | ||
| } | ||
| fmt.Printf("Downloaded Go %s [%x] into %s\n", version, hash, path) | ||
| return nil | ||
| } |