1d98538411
This commit fixes #810 and adds block streaming to the final destinations when adding. This should add major performance gains when adding data to clusters. Before, everytime cluster issued a block, it was broadcasted individually to all destinations (new libp2p stream), where it was block/put to IPFS (a single block/put http roundtrip per block). Now, blocks are streamed all the way from the adder module to the ipfs daemon, by making every block as it arrives a single part in a multipart block/put request. Before, block-broadcast needed to wait for all destinations to finish in order to process the next block. Now, buffers allow some destinations to be faster than others while sending and receiving blocks. Before, if a block put request failed to be broadcasted everywhere, an error would happen at that moment. Now, we keep streaming until the end and only then report any errors. The operation succeeds as long as at least one stream finished successfully. Errors block/putting to IPFS will not abort streams. Instead, subsequent blocks are retried with a new request, although the method will return an error when the stream finishes if there were errors at any point.
794 lines
18 KiB
Go
794 lines
18 KiB
Go
package ipfsproxy
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import (
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"context"
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"encoding/json"
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"fmt"
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"io"
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"net"
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"net/http"
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"net/http/httputil"
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"net/url"
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"os"
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"strconv"
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"strings"
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"sync"
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"time"
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"github.com/ipfs/ipfs-cluster/adder/adderutils"
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"github.com/ipfs/ipfs-cluster/api"
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"github.com/ipfs/ipfs-cluster/rpcutil"
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handlers "github.com/gorilla/handlers"
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mux "github.com/gorilla/mux"
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cid "github.com/ipfs/go-cid"
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cmd "github.com/ipfs/go-ipfs-cmds"
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logging "github.com/ipfs/go-log/v2"
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path "github.com/ipfs/go-path"
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peer "github.com/libp2p/go-libp2p-core/peer"
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rpc "github.com/libp2p/go-libp2p-gorpc"
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madns "github.com/multiformats/go-multiaddr-dns"
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manet "github.com/multiformats/go-multiaddr/net"
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"go.opencensus.io/plugin/ochttp"
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"go.opencensus.io/plugin/ochttp/propagation/tracecontext"
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"go.opencensus.io/trace"
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)
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// DNSTimeout is used when resolving DNS multiaddresses in this module
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var DNSTimeout = 5 * time.Second
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var (
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logger = logging.Logger("ipfsproxy")
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proxyLogger = logging.Logger("ipfsproxylog")
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)
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// Server offers an IPFS API, hijacking some interesting requests
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// and forwarding the rest to the ipfs daemon
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// it proxies HTTP requests to the configured IPFS
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// daemon. It is able to intercept these requests though, and
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// perform extra operations on them.
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type Server struct {
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ctx context.Context
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cancel func()
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config *Config
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nodeScheme string
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nodeAddr string
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rpcClient *rpc.Client
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rpcReady chan struct{}
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listeners []net.Listener // proxy listener
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server *http.Server // proxy server
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ipfsRoundTripper http.RoundTripper // allows to talk to IPFS
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ipfsHeadersStore sync.Map
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shutdownLock sync.Mutex
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shutdown bool
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wg sync.WaitGroup
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}
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type ipfsPinType struct {
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Type string
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}
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type ipfsPinLsResp struct {
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Keys map[string]ipfsPinType
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}
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type ipfsPinOpResp struct {
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Pins []string
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}
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// From https://github.com/ipfs/go-ipfs/blob/master/core/coreunix/add.go#L49
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type ipfsAddResp struct {
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Name string
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Hash string `json:",omitempty"`
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Bytes int64 `json:",omitempty"`
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Size string `json:",omitempty"`
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}
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type logWriter struct {
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}
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func (lw logWriter) Write(b []byte) (int, error) {
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proxyLogger.Infof(string(b))
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return len(b), nil
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}
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// New returns and ipfs Proxy component
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func New(cfg *Config) (*Server, error) {
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err := cfg.Validate()
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if err != nil {
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return nil, err
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}
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nodeMAddr := cfg.NodeAddr
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// dns multiaddresses need to be resolved first
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if madns.Matches(nodeMAddr) {
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ctx, cancel := context.WithTimeout(context.Background(), DNSTimeout)
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defer cancel()
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resolvedAddrs, err := madns.Resolve(ctx, cfg.NodeAddr)
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if err != nil {
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logger.Error(err)
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return nil, err
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}
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nodeMAddr = resolvedAddrs[0]
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}
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_, nodeAddr, err := manet.DialArgs(nodeMAddr)
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if err != nil {
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return nil, err
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}
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var listeners []net.Listener
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for _, addr := range cfg.ListenAddr {
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proxyNet, proxyAddr, err := manet.DialArgs(addr)
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if err != nil {
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return nil, err
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}
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l, err := net.Listen(proxyNet, proxyAddr)
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if err != nil {
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return nil, err
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}
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listeners = append(listeners, l)
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}
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nodeScheme := "http"
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if cfg.NodeHTTPS {
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nodeScheme = "https"
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}
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nodeHTTPAddr := fmt.Sprintf("%s://%s", nodeScheme, nodeAddr)
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proxyURL, err := url.Parse(nodeHTTPAddr)
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if err != nil {
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return nil, err
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}
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var handler http.Handler
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router := mux.NewRouter()
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handler = router
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if cfg.Tracing {
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handler = &ochttp.Handler{
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IsPublicEndpoint: true,
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Propagation: &tracecontext.HTTPFormat{},
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Handler: router,
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StartOptions: trace.StartOptions{SpanKind: trace.SpanKindServer},
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FormatSpanName: func(req *http.Request) string {
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return "proxy:" + req.Host + ":" + req.URL.Path + ":" + req.Method
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},
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}
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}
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var writer io.Writer
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if cfg.LogFile != "" {
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f, err := os.OpenFile(cfg.getLogPath(), os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
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if err != nil {
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return nil, err
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}
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writer = f
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} else {
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writer = logWriter{}
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}
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s := &http.Server{
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ReadTimeout: cfg.ReadTimeout,
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WriteTimeout: cfg.WriteTimeout,
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ReadHeaderTimeout: cfg.ReadHeaderTimeout,
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IdleTimeout: cfg.IdleTimeout,
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Handler: handlers.LoggingHandler(writer, handler),
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MaxHeaderBytes: cfg.MaxHeaderBytes,
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}
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// See: https://github.com/ipfs/go-ipfs/issues/5168
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// See: https://github.com/ipfs/ipfs-cluster/issues/548
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// on why this is re-enabled.
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s.SetKeepAlivesEnabled(true) // A reminder that this can be changed
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reverseProxy := httputil.NewSingleHostReverseProxy(proxyURL)
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reverseProxy.Transport = http.DefaultTransport
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ctx, cancel := context.WithCancel(context.Background())
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proxy := &Server{
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ctx: ctx,
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config: cfg,
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cancel: cancel,
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nodeAddr: nodeHTTPAddr,
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nodeScheme: nodeScheme,
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rpcReady: make(chan struct{}, 1),
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listeners: listeners,
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server: s,
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ipfsRoundTripper: reverseProxy.Transport,
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}
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// Ideally, we should only intercept POST requests, but
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// people may be calling the API with GET or worse, PUT
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// because IPFS has been allowing this traditionally.
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// The main idea here is that we do not intercept
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// OPTIONS requests (or HEAD).
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hijackSubrouter := router.
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Methods(http.MethodPost, http.MethodGet, http.MethodPut).
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PathPrefix("/api/v0").
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Subrouter()
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// Add hijacked routes
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hijackSubrouter.
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Path("/pin/add/{arg}").
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HandlerFunc(slashHandler(proxy.pinHandler)).
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Name("PinAddSlash") // supports people using the API wrong.
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hijackSubrouter.
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Path("/pin/add").
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HandlerFunc(proxy.pinHandler).
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Name("PinAdd")
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hijackSubrouter.
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Path("/pin/rm/{arg}").
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HandlerFunc(slashHandler(proxy.unpinHandler)).
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Name("PinRmSlash") // supports people using the API wrong.
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hijackSubrouter.
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Path("/pin/rm").
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HandlerFunc(proxy.unpinHandler).
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Name("PinRm")
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hijackSubrouter.
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Path("/pin/ls/{arg}").
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HandlerFunc(slashHandler(proxy.pinLsHandler)).
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Name("PinLsSlash") // supports people using the API wrong.
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hijackSubrouter.
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Path("/pin/ls").
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HandlerFunc(proxy.pinLsHandler).
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Name("PinLs")
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hijackSubrouter.
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Path("/pin/update").
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HandlerFunc(proxy.pinUpdateHandler).
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Name("PinUpdate")
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hijackSubrouter.
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Path("/add").
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HandlerFunc(proxy.addHandler).
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Name("Add")
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hijackSubrouter.
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Path("/repo/stat").
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HandlerFunc(proxy.repoStatHandler).
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Name("RepoStat")
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hijackSubrouter.
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Path("/repo/gc").
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HandlerFunc(proxy.repoGCHandler).
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Name("RepoGC")
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// Everything else goes to the IPFS daemon.
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router.PathPrefix("/").Handler(reverseProxy)
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go proxy.run()
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return proxy, nil
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}
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// SetClient makes the component ready to perform RPC
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// requests.
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func (proxy *Server) SetClient(c *rpc.Client) {
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proxy.rpcClient = c
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proxy.rpcReady <- struct{}{}
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}
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// Shutdown stops any listeners and stops the component from taking
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// any requests.
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func (proxy *Server) Shutdown(ctx context.Context) error {
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proxy.shutdownLock.Lock()
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defer proxy.shutdownLock.Unlock()
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if proxy.shutdown {
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logger.Debug("already shutdown")
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return nil
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}
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logger.Info("stopping IPFS Proxy")
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proxy.cancel()
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close(proxy.rpcReady)
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proxy.server.SetKeepAlivesEnabled(false)
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for _, l := range proxy.listeners {
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l.Close()
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}
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proxy.wg.Wait()
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proxy.shutdown = true
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return nil
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}
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// launches proxy when we receive the rpcReady signal.
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func (proxy *Server) run() {
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<-proxy.rpcReady
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// Do not shutdown while launching threads
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// -- prevents race conditions with proxy.wg.
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proxy.shutdownLock.Lock()
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defer proxy.shutdownLock.Unlock()
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// This launches the proxy
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proxy.wg.Add(len(proxy.listeners))
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for _, l := range proxy.listeners {
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go func(l net.Listener) {
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defer proxy.wg.Done()
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maddr, err := manet.FromNetAddr(l.Addr())
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if err != nil {
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logger.Error(err)
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}
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logger.Infof(
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"IPFS Proxy: %s -> %s",
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maddr,
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proxy.config.NodeAddr,
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)
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err = proxy.server.Serve(l) // hangs here
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if err != nil && !strings.Contains(err.Error(), "closed network connection") {
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logger.Error(err)
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}
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}(l)
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}
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}
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// ipfsErrorResponder writes an http error response just like IPFS would.
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func ipfsErrorResponder(w http.ResponseWriter, errMsg string, code int) {
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res := cmd.Errorf(cmd.ErrNormal, errMsg)
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resBytes, _ := json.Marshal(res)
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if code > 0 {
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w.WriteHeader(code)
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} else {
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w.WriteHeader(http.StatusInternalServerError)
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}
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w.Write(resBytes)
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}
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func (proxy *Server) pinOpHandler(op string, w http.ResponseWriter, r *http.Request) {
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proxy.setHeaders(w.Header(), r)
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q := r.URL.Query()
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arg := q.Get("arg")
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p, err := path.ParsePath(arg)
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if err != nil {
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ipfsErrorResponder(w, "Error parsing IPFS Path: "+err.Error(), -1)
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return
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}
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pinPath := api.PinPath{Path: p.String()}
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pinPath.Mode = api.PinModeFromString(q.Get("type"))
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var pin api.Pin
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err = proxy.rpcClient.Call(
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"",
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"Cluster",
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op,
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pinPath,
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&pin,
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)
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if err != nil {
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ipfsErrorResponder(w, err.Error(), -1)
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return
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}
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res := ipfsPinOpResp{
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Pins: []string{pin.Cid.String()},
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}
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resBytes, _ := json.Marshal(res)
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w.WriteHeader(http.StatusOK)
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w.Write(resBytes)
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}
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func (proxy *Server) pinHandler(w http.ResponseWriter, r *http.Request) {
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proxy.pinOpHandler("PinPath", w, r)
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}
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func (proxy *Server) unpinHandler(w http.ResponseWriter, r *http.Request) {
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proxy.pinOpHandler("UnpinPath", w, r)
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}
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func (proxy *Server) pinLsHandler(w http.ResponseWriter, r *http.Request) {
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proxy.setHeaders(w.Header(), r)
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arg := r.URL.Query().Get("arg")
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stream := false
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streamArg := r.URL.Query().Get("stream")
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streamArg2 := r.URL.Query().Get("s")
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if streamArg == "true" || streamArg2 == "true" {
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stream = true
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}
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if arg != "" {
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c, err := cid.Decode(arg)
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if err != nil {
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ipfsErrorResponder(w, err.Error(), -1)
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return
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}
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var pin api.Pin
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err = proxy.rpcClient.CallContext(
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r.Context(),
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"",
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"Cluster",
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"PinGet",
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c,
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&pin,
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)
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if err != nil {
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ipfsErrorResponder(w, fmt.Sprintf("Error: path '%s' is not pinned", arg), -1)
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return
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}
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if stream {
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ipinfo := api.IPFSPinInfo{
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Cid: api.Cid(pin.Cid),
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Type: pin.Mode.ToIPFSPinStatus(),
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}
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resBytes, _ := json.Marshal(ipinfo)
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w.WriteHeader(http.StatusOK)
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w.Write(resBytes)
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} else {
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pinLs := ipfsPinLsResp{}
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pinLs.Keys = make(map[string]ipfsPinType)
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pinLs.Keys[pin.Cid.String()] = ipfsPinType{
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Type: "recursive",
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}
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resBytes, _ := json.Marshal(pinLs)
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w.WriteHeader(http.StatusOK)
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w.Write(resBytes)
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}
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} else {
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in := make(chan struct{})
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close(in)
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pins := make(chan api.Pin)
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var err error
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var wg sync.WaitGroup
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wg.Add(1)
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go func() {
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defer wg.Done()
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err = proxy.rpcClient.Stream(
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r.Context(),
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"",
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"Cluster",
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"Pins",
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in,
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pins,
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)
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}()
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if stream {
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w.Header().Set("Trailer", "X-Stream-Error")
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w.WriteHeader(http.StatusOK)
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for pin := range pins {
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ipinfo := api.IPFSPinInfo{
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Cid: api.Cid(pin.Cid),
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Type: pin.Mode.ToIPFSPinStatus(),
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}
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resBytes, _ := json.Marshal(ipinfo)
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w.Write(resBytes)
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}
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wg.Wait()
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if err != nil {
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w.Header().Add("X-Stream-Error", err.Error())
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return
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}
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} else {
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pinLs := ipfsPinLsResp{}
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pinLs.Keys = make(map[string]ipfsPinType)
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for pin := range pins {
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pinLs.Keys[pin.Cid.String()] = ipfsPinType{
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Type: "recursive",
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}
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}
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wg.Wait()
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if err != nil {
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ipfsErrorResponder(w, err.Error(), -1)
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return
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}
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resBytes, _ := json.Marshal(pinLs)
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w.WriteHeader(http.StatusOK)
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w.Write(resBytes)
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}
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}
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}
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func (proxy *Server) pinUpdateHandler(w http.ResponseWriter, r *http.Request) {
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ctx, span := trace.StartSpan(r.Context(), "ipfsproxy/pinUpdateHandler")
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defer span.End()
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proxy.setHeaders(w.Header(), r)
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// Check that we have enough arguments and mimic ipfs response when not
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q := r.URL.Query()
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args := q["arg"]
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if len(args) == 0 {
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ipfsErrorResponder(w, "argument \"from-path\" is required", http.StatusBadRequest)
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return
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}
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if len(args) == 1 {
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ipfsErrorResponder(w, "argument \"to-path\" is required", http.StatusBadRequest)
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return
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}
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unpin := !(q.Get("unpin") == "false")
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from := args[0]
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to := args[1]
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// Parse paths (we will need to resolve them)
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pFrom, err := path.ParsePath(from)
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if err != nil {
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ipfsErrorResponder(w, "error parsing \"from-path\" argument: "+err.Error(), -1)
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return
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}
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pTo, err := path.ParsePath(to)
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if err != nil {
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ipfsErrorResponder(w, "error parsing \"to-path\" argument: "+err.Error(), -1)
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return
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}
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// Resolve the FROM argument
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var fromCid cid.Cid
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err = proxy.rpcClient.CallContext(
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ctx,
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"",
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"IPFSConnector",
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"Resolve",
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pFrom.String(),
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&fromCid,
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)
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if err != nil {
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ipfsErrorResponder(w, err.Error(), -1)
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return
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}
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// Do a PinPath setting PinUpdate
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pinPath := api.PinPath{Path: pTo.String()}
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pinPath.PinUpdate = fromCid
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|
|
|
var pin api.Pin
|
|
err = proxy.rpcClient.Call(
|
|
"",
|
|
"Cluster",
|
|
"PinPath",
|
|
pinPath,
|
|
&pin,
|
|
)
|
|
if err != nil {
|
|
ipfsErrorResponder(w, err.Error(), -1)
|
|
return
|
|
}
|
|
|
|
// If unpin != "false", unpin the FROM argument
|
|
// (it was already resolved).
|
|
var pinObj api.Pin
|
|
if unpin {
|
|
err = proxy.rpcClient.CallContext(
|
|
ctx,
|
|
"",
|
|
"Cluster",
|
|
"Unpin",
|
|
api.PinCid(fromCid),
|
|
&pinObj,
|
|
)
|
|
if err != nil {
|
|
ipfsErrorResponder(w, err.Error(), -1)
|
|
return
|
|
}
|
|
}
|
|
|
|
res := ipfsPinOpResp{
|
|
Pins: []string{fromCid.String(), pin.Cid.String()},
|
|
}
|
|
resBytes, _ := json.Marshal(res)
|
|
w.WriteHeader(http.StatusOK)
|
|
w.Write(resBytes)
|
|
}
|
|
|
|
func (proxy *Server) addHandler(w http.ResponseWriter, r *http.Request) {
|
|
proxy.setHeaders(w.Header(), r)
|
|
|
|
reader, err := r.MultipartReader()
|
|
if err != nil {
|
|
ipfsErrorResponder(w, "error reading request: "+err.Error(), -1)
|
|
return
|
|
}
|
|
|
|
q := r.URL.Query()
|
|
if q.Get("only-hash") == "true" {
|
|
ipfsErrorResponder(w, "only-hash is not supported when adding to cluster", -1)
|
|
}
|
|
|
|
// Luckily, most IPFS add query params are compatible with cluster's
|
|
// /add params. We can parse most of them directly from the query.
|
|
params, err := api.AddParamsFromQuery(q)
|
|
if err != nil {
|
|
ipfsErrorResponder(w, "error parsing options:"+err.Error(), -1)
|
|
return
|
|
}
|
|
trickle := q.Get("trickle")
|
|
if trickle == "true" {
|
|
params.Layout = "trickle"
|
|
}
|
|
nopin := q.Get("pin") == "false"
|
|
if nopin {
|
|
params.NoPin = true
|
|
}
|
|
|
|
logger.Warnf("Proxy/add does not support all IPFS params. Current options: %+v", params)
|
|
|
|
outputTransform := func(in api.AddedOutput) interface{} {
|
|
cidStr := ""
|
|
if in.Cid.Defined() {
|
|
cidStr = in.Cid.String()
|
|
}
|
|
r := &ipfsAddResp{
|
|
Name: in.Name,
|
|
Hash: cidStr,
|
|
Bytes: int64(in.Bytes),
|
|
}
|
|
if in.Size != 0 {
|
|
r.Size = strconv.FormatUint(in.Size, 10)
|
|
}
|
|
return r
|
|
}
|
|
|
|
_, err = adderutils.AddMultipartHTTPHandler(
|
|
proxy.ctx,
|
|
proxy.rpcClient,
|
|
params,
|
|
reader,
|
|
w,
|
|
outputTransform,
|
|
)
|
|
if err != nil {
|
|
logger.Error(err)
|
|
}
|
|
}
|
|
|
|
func (proxy *Server) repoStatHandler(w http.ResponseWriter, r *http.Request) {
|
|
proxy.setHeaders(w.Header(), r)
|
|
|
|
peers := make([]peer.ID, 0)
|
|
err := proxy.rpcClient.Call(
|
|
"",
|
|
"Consensus",
|
|
"Peers",
|
|
struct{}{},
|
|
&peers,
|
|
)
|
|
if err != nil {
|
|
ipfsErrorResponder(w, err.Error(), -1)
|
|
return
|
|
}
|
|
|
|
ctxs, cancels := rpcutil.CtxsWithCancel(proxy.ctx, len(peers))
|
|
defer rpcutil.MultiCancel(cancels)
|
|
|
|
repoStats := make([]*api.IPFSRepoStat, len(peers))
|
|
repoStatsIfaces := make([]interface{}, len(repoStats))
|
|
for i := range repoStats {
|
|
repoStats[i] = &api.IPFSRepoStat{}
|
|
repoStatsIfaces[i] = repoStats[i]
|
|
}
|
|
|
|
errs := proxy.rpcClient.MultiCall(
|
|
ctxs,
|
|
peers,
|
|
"IPFSConnector",
|
|
"RepoStat",
|
|
struct{}{},
|
|
repoStatsIfaces,
|
|
)
|
|
|
|
totalStats := api.IPFSRepoStat{}
|
|
|
|
for i, err := range errs {
|
|
if err != nil {
|
|
if rpc.IsAuthorizationError(err) {
|
|
logger.Debug(err)
|
|
continue
|
|
}
|
|
logger.Errorf("%s repo/stat errored: %s", peers[i], err)
|
|
continue
|
|
}
|
|
totalStats.RepoSize += repoStats[i].RepoSize
|
|
totalStats.StorageMax += repoStats[i].StorageMax
|
|
}
|
|
|
|
resBytes, _ := json.Marshal(totalStats)
|
|
w.WriteHeader(http.StatusOK)
|
|
w.Write(resBytes)
|
|
}
|
|
|
|
type ipfsRepoGCResp struct {
|
|
Key cid.Cid `json:",omitempty"`
|
|
Error string `json:",omitempty"`
|
|
}
|
|
|
|
func (proxy *Server) repoGCHandler(w http.ResponseWriter, r *http.Request) {
|
|
queryValues := r.URL.Query()
|
|
streamErrors := queryValues.Get("stream-errors") == "true"
|
|
// ignoring `quiet` since it only affects text output
|
|
|
|
proxy.setHeaders(w.Header(), r)
|
|
|
|
w.Header().Set("Trailer", "X-Stream-Error")
|
|
var repoGC api.GlobalRepoGC
|
|
err := proxy.rpcClient.CallContext(
|
|
r.Context(),
|
|
"",
|
|
"Cluster",
|
|
"RepoGC",
|
|
struct{}{},
|
|
&repoGC,
|
|
)
|
|
if err != nil {
|
|
ipfsErrorResponder(w, err.Error(), -1)
|
|
return
|
|
}
|
|
|
|
w.WriteHeader(http.StatusOK)
|
|
enc := json.NewEncoder(w)
|
|
var ipfsRepoGC ipfsRepoGCResp
|
|
mError := multiError{}
|
|
for _, gc := range repoGC.PeerMap {
|
|
for _, key := range gc.Keys {
|
|
if streamErrors {
|
|
ipfsRepoGC = ipfsRepoGCResp{Key: key.Key, Error: key.Error}
|
|
} else {
|
|
ipfsRepoGC = ipfsRepoGCResp{Key: key.Key}
|
|
if key.Error != "" {
|
|
mError.add(key.Error)
|
|
}
|
|
}
|
|
|
|
// Cluster tags start with small letter, but IPFS tags with capital letter.
|
|
if err := enc.Encode(ipfsRepoGC); err != nil {
|
|
logger.Error(err)
|
|
}
|
|
}
|
|
}
|
|
|
|
mErrStr := mError.Error()
|
|
if !streamErrors && mErrStr != "" {
|
|
w.Header().Set("X-Stream-Error", mErrStr)
|
|
}
|
|
}
|
|
|
|
// slashHandler returns a handler which converts a /a/b/c/<argument> request
|
|
// into an /a/b/c/<argument>?arg=<argument> one. And uses the given origHandler
|
|
// for it. Our handlers expect that arguments are passed in the ?arg query
|
|
// value.
|
|
func slashHandler(origHandler http.HandlerFunc) http.HandlerFunc {
|
|
return func(w http.ResponseWriter, r *http.Request) {
|
|
warnMsg := "You are using an undocumented form of the IPFS API. "
|
|
warnMsg += "Consider passing your command arguments"
|
|
warnMsg += "with the '?arg=' query parameter"
|
|
logger.Error(warnMsg)
|
|
|
|
vars := mux.Vars(r)
|
|
arg := vars["arg"]
|
|
|
|
// IF we needed to modify the request path, we could do
|
|
// something along these lines. This is not the case
|
|
// at the moment. We just need to set the query argument.
|
|
//
|
|
// route := mux.CurrentRoute(r)
|
|
// path, err := route.GetPathTemplate()
|
|
// if err != nil {
|
|
// // I'd like to panic, but I don' want to kill a full
|
|
// // peer just because of a buggy use.
|
|
// logger.Critical("BUG: wrong use of slashHandler")
|
|
// origHandler(w, r) // proceed as nothing
|
|
// return
|
|
// }
|
|
// fixedPath := strings.TrimSuffix(path, "/{arg}")
|
|
// r.URL.Path = url.PathEscape(fixedPath)
|
|
// r.URL.RawPath = fixedPath
|
|
|
|
q := r.URL.Query()
|
|
q.Set("arg", arg)
|
|
r.URL.RawQuery = q.Encode()
|
|
origHandler(w, r)
|
|
}
|
|
}
|