feat: switch to boxo and use routing-v1 for routing requests

[aschmahmann]

Unarchived the repo and simplified the code by switching to the boxo gateway implementation.

Some notable changes:

1. Switched from an accelerated DHT client to a routing-v1 backend. Could support both if desired though.
2. Switched from a Bitswap Client + Server to just a Client

Some smaller ones which anyone should feel free to revert:

• Reduced the low water defaults (no evidence gathered here, but since we're not running the accelerated client it seems like we should safely be able to reduce some limits). Lower numbers of connections will also help us out with reducing unnecessary spamming from the boxo/bitswap client until that's resolved.
• Changed the tagline. Figured the experimental thing shouldn't be advertised as "just working" until we've shown it doing the job 😅
• Changed the version to v0.0.1-dev
• Changed the wording around the /version endpoint

---

Other notes:

• rainbow previously did GC via a special API. We could also experiment with other types of GC (e.g. LRU, LFRU, etc.) but didn't feel the need to change this here.
• similarly, rainbow uses flatfs which is another area that can be examined for what makes sense

[hacdias]

Since I don't have permissions in this repository: ✅ I do approve. My feedback:

diff --git a/.gitignore b/.gitignore
index b74c25d..c718cb0 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,4 @@
 rainbow
 libp2p.key
+blockstore
+datastore
diff --git a/main.go b/main.go
index 5b11d60..58a0183 100644
--- a/main.go
+++ b/main.go
@@ -98,8 +98,6 @@ func main() {
 					http.Error(w, err.Error(), http.StatusInternalServerError)
 					return
 				}
-
-				return
 			})
 
 			if err := http.ListenAndServe(cctx.String("api-listen"), nil); err != nil {
diff --git a/setup.go b/setup.go
index e6b3541..314fdc9 100644
--- a/setup.go
+++ b/setup.go
@@ -4,8 +4,6 @@ import (
 	"context"
 	crand "crypto/rand"
 	"fmt"
-	httpcontentrouter "github.com/ipfs/boxo/routing/http/contentrouter"
-	"io/ioutil"
 	"net/http"
 	"os"
 	"time"
@@ -14,10 +12,10 @@ import (
 	bsnet "github.com/ipfs/boxo/bitswap/network"
 	"github.com/ipfs/boxo/blockservice"
 	blockstore "github.com/ipfs/boxo/blockstore"
-	bstore "github.com/ipfs/boxo/blockstore"
 	"github.com/ipfs/boxo/gateway"
 	"github.com/ipfs/boxo/namesys"
 	routingv1client "github.com/ipfs/boxo/routing/http/client"
+	httpcontentrouter "github.com/ipfs/boxo/routing/http/contentrouter"
 	flatfs "github.com/ipfs/go-ds-flatfs"
 	levelds "github.com/ipfs/go-ds-leveldb"
 	logging "github.com/ipfs/go-log/v2"
@@ -54,8 +52,6 @@ type Node struct {
 	ns namesys.NameSystem
 
 	bwc *metrics.BandwidthCounter
-
-	mux *http.ServeMux
 }
 
 type Config struct {
@@ -121,7 +117,7 @@ func Setup(ctx context.Context, cfg *Config) (*Node, error) {
 	if err != nil {
 		return nil, err
 	}
-	blkst = bstore.NewIdStore(blkst)
+	blkst = blockstore.NewIdStore(blkst)
 
 	bsctx := metri.CtxScope(ctx, "rainbow")
 
@@ -187,7 +183,7 @@ func loadBlockstore(spec string, path string) (blockstore.Blockstore, error) {
 }
 
 func loadOrInitPeerKey(kf string) (crypto.PrivKey, error) {
-	data, err := ioutil.ReadFile(kf)
+	data, err := os.ReadFile(kf)
 	if err != nil {
 		if !os.IsNotExist(err) {
 			return nil, err

Removes duplicate dependencies, adds blockstore and datastore to .gitignore, and stops using deprecated APIs.

[aschmahmann]

Thanks @hacdias, updated with your fixes as well as a couple of bugs I found and copying the version-ing scheme from bifrost-gateway for now. Will make a follow-up PR on this one with more things like tracing.

Will also get permissions sorted out on this repo 😅