129 lines
3.4 KiB
Go
129 lines
3.4 KiB
Go
package transfer
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import (
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"sync"
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"github.com/git-lfs/git-lfs/config"
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"github.com/rubyist/tracerx"
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)
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type Manifest struct {
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basicTransfersOnly bool
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downloadAdapterFuncs map[string]NewTransferAdapterFunc
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uploadAdapterFuncs map[string]NewTransferAdapterFunc
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mu sync.Mutex
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}
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func NewManifest() *Manifest {
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return &Manifest{
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downloadAdapterFuncs: make(map[string]NewTransferAdapterFunc),
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uploadAdapterFuncs: make(map[string]NewTransferAdapterFunc),
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}
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}
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func ConfigureManifest(m *Manifest, cfg *config.Configuration) *Manifest {
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m.basicTransfersOnly = cfg.BasicTransfersOnly()
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configureBasicDownloadAdapter(m)
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configureBasicUploadAdapter(m)
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if cfg.TusTransfersAllowed() {
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configureTusAdapter(m)
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}
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configureCustomAdapters(cfg, m)
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return m
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}
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// GetAdapterNames returns a list of the names of adapters available to be created
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func (m *Manifest) GetAdapterNames(dir Direction) []string {
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switch dir {
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case Upload:
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return m.GetUploadAdapterNames()
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case Download:
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return m.GetDownloadAdapterNames()
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}
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return nil
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}
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// GetDownloadAdapterNames returns a list of the names of download adapters available to be created
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func (m *Manifest) GetDownloadAdapterNames() []string {
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return m.getAdapterNames(m.downloadAdapterFuncs)
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}
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// GetUploadAdapterNames returns a list of the names of upload adapters available to be created
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func (m *Manifest) GetUploadAdapterNames() []string {
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return m.getAdapterNames(m.uploadAdapterFuncs)
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}
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// getAdapterNames returns a list of the names of adapters available to be created
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func (m *Manifest) getAdapterNames(adapters map[string]NewTransferAdapterFunc) []string {
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if m.basicTransfersOnly {
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return []string{BasicAdapterName}
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}
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m.mu.Lock()
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defer m.mu.Unlock()
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ret := make([]string, 0, len(adapters))
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for n, _ := range adapters {
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ret = append(ret, n)
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}
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return ret
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}
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// RegisterNewTransferAdapterFunc registers a new function for creating upload
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// or download adapters. If a function with that name & direction is already
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// registered, it is overridden
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func (m *Manifest) RegisterNewTransferAdapterFunc(name string, dir Direction, f NewTransferAdapterFunc) {
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m.mu.Lock()
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defer m.mu.Unlock()
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switch dir {
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case Upload:
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m.uploadAdapterFuncs[name] = f
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case Download:
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m.downloadAdapterFuncs[name] = f
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}
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}
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// Create a new adapter by name and direction; default to BasicAdapterName if doesn't exist
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func (m *Manifest) NewAdapterOrDefault(name string, dir Direction) TransferAdapter {
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if len(name) == 0 {
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name = BasicAdapterName
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}
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a := m.NewAdapter(name, dir)
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if a == nil {
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tracerx.Printf("Defaulting to basic transfer adapter since %q did not exist", name)
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a = m.NewAdapter(BasicAdapterName, dir)
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}
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return a
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}
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// Create a new adapter by name and direction, or nil if doesn't exist
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func (m *Manifest) NewAdapter(name string, dir Direction) TransferAdapter {
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m.mu.Lock()
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defer m.mu.Unlock()
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switch dir {
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case Upload:
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if u, ok := m.uploadAdapterFuncs[name]; ok {
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return u(name, dir)
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}
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case Download:
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if d, ok := m.downloadAdapterFuncs[name]; ok {
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return d(name, dir)
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}
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}
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return nil
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}
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// Create a new download adapter by name, or BasicAdapterName if doesn't exist
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func (m *Manifest) NewDownloadAdapter(name string) TransferAdapter {
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return m.NewAdapterOrDefault(name, Download)
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}
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// Create a new upload adapter by name, or BasicAdapterName if doesn't exist
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func (m *Manifest) NewUploadAdapter(name string) TransferAdapter {
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return m.NewAdapterOrDefault(name, Upload)
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}
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