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This patch:
1. Bootstraps F3 when we hit the `F3BootstrapEpoch` (when non-negative).
2. Refuses any/all dynamic manifests once we get within one finality of said epoch.
3. Sets the F3 network name for mainnet to "filecoin".
4. Refuses any/all dynamic manifests that don't start with the expected
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,45 +1,84 @@ | ||
| package lf3 | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
| "strings" | ||
|
|
||
| "github.com/ipfs/go-datastore" | ||
| "github.com/ipfs/go-datastore/namespace" | ||
| pubsub "github.com/libp2p/go-libp2p-pubsub" | ||
| "golang.org/x/xerrors" | ||
|
|
||
| "github.com/filecoin-project/go-f3/ec" | ||
| "github.com/filecoin-project/go-f3/manifest" | ||
|
|
||
| "github.com/filecoin-project/lotus/chain/store" | ||
| "github.com/filecoin-project/lotus/node/modules/dtypes" | ||
| "github.com/filecoin-project/lotus/node/modules/helpers" | ||
| ) | ||
|
|
||
| type headGetter store.ChainStore | ||
|
|
||
| func (hg *headGetter) GetHead(context.Context) (ec.TipSet, error) { | ||
| head := (*store.ChainStore)(hg).GetHeaviestTipSet() | ||
| if head == nil { | ||
| return nil, xerrors.New("no heaviest tipset") | ||
| } | ||
| return &f3TipSet{TipSet: head}, nil | ||
| } | ||
|
|
||
| // Determines the max. number of configuration changes | ||
| // that are allowed for the dynamic manifest. | ||
| // If the manifest changes more than this number, the F3 | ||
| // message topic will be filtered | ||
| var MaxDynamicManifestChangesAllowed = 1000 | ||
|
|
||
| func NewManifestProvider(config *Config, ps *pubsub.PubSub, mds dtypes.MetadataDS) (manifest.ManifestProvider, error) { | ||
| func NewManifestProvider(mctx helpers.MetricsCtx, config *Config, cs *store.ChainStore, ps *pubsub.PubSub, mds dtypes.MetadataDS) (prov manifest.ManifestProvider, err error) { | ||
| if config.DynamicManifestProvider == "" { | ||
| return manifest.NewStaticManifestProvider(config.InitialManifest) | ||
| if config.StaticManifest == nil { | ||
| return manifest.NoopManifestProvider{}, nil | ||
| } | ||
| return manifest.NewStaticManifestProvider(config.StaticManifest) | ||
| } | ||
|
|
||
| opts := []manifest.DynamicManifestProviderOption{ | ||
| manifest.DynamicManifestProviderWithDatastore( | ||
| namespace.Wrap(mds, datastore.NewKey("/f3-dynamic-manifest")), | ||
| ), | ||
| } | ||
|
|
||
| if config.StaticManifest != nil { | ||
| opts = append(opts, | ||
| manifest.DynamicManifestProviderWithInitialManifest(config.StaticManifest), | ||
| ) | ||
| } | ||
|
|
||
| primaryNetworkName := config.InitialManifest.NetworkName | ||
| networkNameBase := config.BaseNetworkName + "/" | ||
| filter := func(m *manifest.Manifest) error { | ||
| if m.EC.Finalize { | ||
| return fmt.Errorf("refusing dynamic manifest that finalizes tipsets") | ||
| } | ||
| if m.NetworkName == primaryNetworkName { | ||
| if !strings.HasPrefix(string(m.NetworkName), string(networkNameBase)) { | ||
| return fmt.Errorf( | ||
| "refusing dynamic manifest with network name %q that clashes with initial manifest", | ||
| primaryNetworkName, | ||
| "refusing dynamic manifest with network name %q, must start with %q", | ||
| m.NetworkName, | ||
| networkNameBase, | ||
| ) | ||
| } | ||
| return nil | ||
| } | ||
| ds := namespace.Wrap(mds, datastore.NewKey("/f3-dynamic-manifest")) | ||
| return manifest.NewDynamicManifestProvider(ps, config.DynamicManifestProvider, | ||
| manifest.DynamicManifestProviderWithInitialManifest(config.InitialManifest), | ||
| manifest.DynamicManifestProviderWithDatastore(ds), | ||
| opts = append(opts, | ||
| manifest.DynamicManifestProviderWithFilter(filter), | ||
| ) | ||
|
|
||
| prov, err = manifest.NewDynamicManifestProvider(ps, config.DynamicManifestProvider, opts...) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| if config.PrioritizeStaticManifest && config.StaticManifest != nil { | ||
| prov, err = manifest.NewFusingManifestProvider(mctx, | ||
| (*headGetter)(cs), prov, config.StaticManifest) | ||
| } | ||
| return prov, err | ||
| } |
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