74 lines
1.7 KiB
Go
74 lines
1.7 KiB
Go
// Copyright (C) 2019 Storj Labs, Inc.
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// See LICENSE for copying information.
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package trust
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import (
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"context"
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"os"
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"github.com/zeebo/errs"
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)
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var (
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// ErrFileSource is an error class for file source errors
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ErrFileSource = errs.Class("file source")
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)
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// FileSource represents a trust source contained in a file on disk.
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type FileSource struct {
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path string
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}
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// NewFileSource creates a new FileSource that loads a trust list from the
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// given path.
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func NewFileSource(path string) *FileSource {
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return &FileSource{
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path: path,
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}
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}
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// String implements the Source interface and returns the FileSource URL.
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func (source *FileSource) String() string {
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return source.path
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}
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// Static implements the Source interface. It returns true.
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func (source *FileSource) Static() bool { return true }
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// FetchEntries implements the Source interface and returns entries from a
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// the file source on disk. The entries returned are authoritative.
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func (source *FileSource) FetchEntries(ctx context.Context) (_ []Entry, err error) {
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urls, err := LoadSatelliteURLList(ctx, source.path)
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if err != nil {
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return nil, err
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}
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var entries []Entry
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for _, url := range urls {
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entries = append(entries, Entry{
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SatelliteURL: url,
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Authoritative: true,
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})
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}
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return entries, nil
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}
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// LoadSatelliteURLList loads a list of Satellite URLs from a path on disk.
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func LoadSatelliteURLList(ctx context.Context, path string) (_ []SatelliteURL, err error) {
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defer mon.Task()(&ctx)(&err)
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f, err := os.Open(path)
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if err != nil {
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return nil, ErrFileSource.Wrap(err)
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}
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defer func() { err = errs.Combine(err, f.Close()) }()
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urls, err := ParseSatelliteURLList(ctx, f)
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if err != nil {
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return nil, ErrFileSource.Wrap(err)
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}
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return urls, nil
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}
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