0d73d33ef5
This commit continues the work of taking advantage of the streaming capabilities in go-libp2p-gorpc by improving the ipfsconnector and pintracker components. StatusAll and RecoverAll methods are now streaming methods, with the REST API output changing accordingly to produce a stream of GlobalPinInfos rather than a json array. pin/ls request to the ipfs daemon now use ?stream=true and avoid having to load the full pinset map on memory. StatusAllLocal and RecoverAllLocal requests to the pin tracker stream all the way and no longer store the full pinset, and the full PinInfo status slice before sending it out. We have additionally switched to a pattern where streaming methods receive the channel as an argument, allowing the caller to decide on whether to launch a goroutine, do buffering etc.
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
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err = proxy.rpcClient.Call(
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"",
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"Cluster",
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"PinPath",
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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)
|
|
}
|
|
}
|