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feat: implement ChainGetTipSet in Lotus v2 APIs (#13003)

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Introduce the first API for Lotus v2, focusing on `ChainGetTipSet`
within the `Chain` group. Define `TipSetSelector` for advanced
tipset retrieval options, and create a compact JSON-RPC call format.

Gracefully accommodate both EC and F3 finalized tipsets based on node
configuration, where:
* EC finalized tipset is returned when F3 is turned off, has no
  finalized tipset or F3 isn't ready.
* F3 finalized is returned otherwise.

Support three categories of selectors under `TipSetSelector`:
* By tag: either "latest" or "finalized."
* By height: epoch, plus optional fallback to previous non-null tipset.
* By tipset key.

The selection falls back to tag "latest" if the user specifies no
selection criterion.

The JSON-RPC format is designed to use JSON Object as the parameters
passed to the RPC call to remain compact, and extensible.
This commit is contained in:
Masih H. Derkani
2025-04-09 17:08:59 +01:00
committed by GitHub
parent 9c897c58a0
commit a1f1d51b73
29 changed files with 1179 additions and 34 deletions
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12
cli/lotus/daemon.go
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@ -31,6 +31,8 @@ import (
"github.com/filecoin-project/go-paramfetch"
lapi "github.com/filecoin-project/lotus/api"
"github.com/filecoin-project/lotus/api/v1api"
"github.com/filecoin-project/lotus/api/v2api"
"github.com/filecoin-project/lotus/build"
"github.com/filecoin-project/lotus/build/buildconstants"
"github.com/filecoin-project/lotus/chain/beacon/drand"
@ -392,9 +394,11 @@ var DaemonCmd = &cli.Command{
log.Warnf("unable to inject prometheus ipfs/go-metrics exporter; some metrics will be unavailable; err: %s", err)
}
var api lapi.FullNode
var v1 v1api.FullNode
var v2 v2api.FullNode
stop, err := node.New(ctx,
node.FullAPI(&api, node.Lite(isLite)),
node.FullAPI(&v1, node.Lite(isLite)),
node.FullAPIv2(&v2),
node.Base(),
node.Repo(r),
@ -424,7 +428,7 @@ var DaemonCmd = &cli.Command{
}
if cctx.String("import-key") != "" {
if err := importKey(ctx, api, cctx.String("import-key")); err != nil {
if err := importKey(ctx, v1, cctx.String("import-key")); err != nil {
log.Errorf("importing key failed: %+v", err)
}
}
@ -445,7 +449,7 @@ var DaemonCmd = &cli.Command{
}
// Instantiate the full node handler.
h, err := node.FullNodeHandler(api, true, serverOptions...)
h, err := node.FullNodeHandler(v1, v2, true, serverOptions...)
if err != nil {
return fmt.Errorf("failed to instantiate rpc handler: %s", err)
}