Simplify serialization

components/debugapi/blocks.go

@@ -16,7 +16,13 @@ func getSlotBlockIDs(index iotago.SlotIndex) (*BlockChangesResponse, error) {
 	}
 
 	includedBlocks := make([]string, 0)
-	tangleTree := ads.NewSet[iotago.Identifier](mapdb.NewMapDB(), iotago.BlockID.Bytes, iotago.BlockIDFromBytes)
+	tangleTree := ads.NewSet[iotago.Identifier](
+		mapdb.NewMapDB(),
+		iotago.Identifier.Bytes,
+		iotago.IdentifierFromBytes,
+		iotago.BlockID.Bytes,
+		iotago.BlockIDFromBytes,
+	)
 
 	_ = blocksForSlot.StreamKeys(func(blockID iotago.BlockID) error {
 		includedBlocks = append(includedBlocks, blockID.String())

components/debugapi/transactions.go

@@ -21,7 +21,13 @@ func storeTransactionsPerSlot(scd *notarization.SlotCommittedDetails) error {
 	if err != nil {
 		return ierrors.Wrapf(err, "failed to retrieve state diff for slot %d", slot)
 	}
-	mutationsTree := ads.NewSet[iotago.Identifier](mapdb.NewMapDB(), iotago.TransactionID.Bytes, iotago.TransactionIDFromBytes)
+	mutationsTree := ads.NewSet[iotago.Identifier](
+		mapdb.NewMapDB(),
+		iotago.Identifier.Bytes,
+		iotago.IdentifierFromBytes,
+		iotago.TransactionID.Bytes,
+		iotago.TransactionIDFromBytes,
+	)
 	tcs := &TransactionsChangesResponse{
 		Index:                slot,
 		IncludedTransactions: make([]string, 0),

go.mod

@@ -10,30 +10,29 @@ require (
 	github.com/google/uuid v1.4.0
 	github.com/gorilla/websocket v1.5.0
 	github.com/grpc-ecosystem/go-grpc-prometheus v1.2.0
-	github.com/iotaledger/hive.go/ads v0.0.0-20231027195901-620bd7470e42
-	github.com/iotaledger/hive.go/app v0.0.0-20231027195901-620bd7470e42
-	github.com/iotaledger/hive.go/constraints v0.0.0-20231027195901-620bd7470e42
-	github.com/iotaledger/hive.go/core v1.0.0-rc.3.0.20231027195901-620bd7470e42
-	github.com/iotaledger/hive.go/crypto v0.0.0-20231027195901-620bd7470e42
-	github.com/iotaledger/hive.go/ds v0.0.0-20231027195901-620bd7470e42
-	github.com/iotaledger/hive.go/ierrors v0.0.0-20231027195901-620bd7470e42
-	github.com/iotaledger/hive.go/kvstore v0.0.0-20231027195901-620bd7470e42
-	github.com/iotaledger/hive.go/lo v0.0.0-20231027195901-620bd7470e42
-	github.com/iotaledger/hive.go/logger v0.0.0-20231027195901-620bd7470e42
-	github.com/iotaledger/hive.go/runtime v0.0.0-20231027195901-620bd7470e42
-	github.com/iotaledger/hive.go/serializer/v2 v2.0.0-rc.1.0.20231027195901-620bd7470e42
-	github.com/iotaledger/hive.go/stringify v0.0.0-20231027195901-620bd7470e42
+	github.com/iotaledger/hive.go/ads v0.0.0-20231106033111-7f3042d04fc4
+	github.com/iotaledger/hive.go/app v0.0.0-20231106033111-7f3042d04fc4
+	github.com/iotaledger/hive.go/constraints v0.0.0-20231106033111-7f3042d04fc4
+	github.com/iotaledger/hive.go/core v1.0.0-rc.3.0.20231106033111-7f3042d04fc4
+	github.com/iotaledger/hive.go/crypto v0.0.0-20231106033111-7f3042d04fc4
+	github.com/iotaledger/hive.go/ds v0.0.0-20231106033111-7f3042d04fc4
+	github.com/iotaledger/hive.go/ierrors v0.0.0-20231106033111-7f3042d04fc4
+	github.com/iotaledger/hive.go/kvstore v0.0.0-20231106033111-7f3042d04fc4
+	github.com/iotaledger/hive.go/lo v0.0.0-20231106033111-7f3042d04fc4
+	github.com/iotaledger/hive.go/logger v0.0.0-20231106033111-7f3042d04fc4
+	github.com/iotaledger/hive.go/runtime v0.0.0-20231106033111-7f3042d04fc4
+	github.com/iotaledger/hive.go/serializer/v2 v2.0.0-rc.1.0.20231106033111-7f3042d04fc4
+	github.com/iotaledger/hive.go/stringify v0.0.0-20231106033111-7f3042d04fc4
 	github.com/iotaledger/inx-app v1.0.0-rc.3.0.20231031135002-4c79ea5193f5
 	github.com/iotaledger/inx/go v1.0.0-rc.2.0.20231031134131-b6ad918dc1ac
-	github.com/iotaledger/iota.go/v4 v4.0.0-20231102113728-20b8d01e826e
+	github.com/iotaledger/iota.go/v4 v4.0.0-20231106063525-564529bf7361
 	github.com/labstack/echo/v4 v4.11.2
 	github.com/labstack/gommon v0.4.0
 	github.com/libp2p/go-libp2p v0.32.0
 	github.com/libp2p/go-libp2p-kad-dht v0.25.1
 	github.com/mr-tron/base58 v1.2.0
 	github.com/multiformats/go-multiaddr v0.12.0
 	github.com/multiformats/go-varint v0.0.7
-	github.com/orcaman/writerseeker v0.0.0-20200621085525-1d3f536ff85e
 	github.com/otiai10/copy v1.14.0
 	github.com/prometheus/client_golang v1.17.0
 	github.com/spf13/pflag v1.0.5
@@ -89,7 +88,7 @@ require (
 	github.com/huin/goupnp v1.3.0 // indirect
 	github.com/iancoleman/orderedmap v0.3.0 // indirect
 	github.com/iotaledger/grocksdb v1.7.5-0.20230220105546-5162e18885c7 // indirect
-	github.com/iotaledger/hive.go/log v0.0.0-20231027195901-620bd7470e42 // indirect
+	github.com/iotaledger/hive.go/log v0.0.0-20231106033111-7f3042d04fc4 // indirect
 	github.com/ipfs/boxo v0.13.1 // indirect
 	github.com/ipfs/go-cid v0.4.1 // indirect
 	github.com/ipfs/go-datastore v0.6.0 // indirect

go.sum

@@ -275,40 +275,40 @@ github.com/iancoleman/orderedmap v0.3.0/go.mod h1:XuLcCUkdL5owUCQeF2Ue9uuw1EptkJ
 github.com/ianlancetaylor/demangle v0.0.0-20210905161508-09a460cdf81d/go.mod h1:aYm2/VgdVmcIU8iMfdMvDMsRAQjcfZSKFby6HOFvi/w=
 github.com/iotaledger/grocksdb v1.7.5-0.20230220105546-5162e18885c7 h1:dTrD7X2PTNgli6EbS4tV9qu3QAm/kBU3XaYZV2xdzys=
 github.com/iotaledger/grocksdb v1.7.5-0.20230220105546-5162e18885c7/go.mod h1:ZRdPu684P0fQ1z8sXz4dj9H5LWHhz4a9oCtvjunkSrw=
-github.com/iotaledger/hive.go/ads v0.0.0-20231027195901-620bd7470e42 h1:EOfxTuAiBmED1VHuVh7/UIeB27cCRe13gdSzyioNMBw=
-github.com/iotaledger/hive.go/ads v0.0.0-20231027195901-620bd7470e42/go.mod h1:IFh0gDfeMgZtfCo+5afK59IDR4xXh+cTR9YtLnZPcbY=
-github.com/iotaledger/hive.go/app v0.0.0-20231027195901-620bd7470e42 h1:xAER9M9Uoz2EOWT43E9wmXRe+RmAk8OBSUoboH4Su8M=
-github.com/iotaledger/hive.go/app v0.0.0-20231027195901-620bd7470e42/go.mod h1:8ZbIKR84oQd/3iQ5eeT7xpudO9/ytzXP7veIYnk7Orc=
-github.com/iotaledger/hive.go/constraints v0.0.0-20231027195901-620bd7470e42 h1:drmpgLlJy7kZ09Dt1qKSnbILU+27Qu2jp4VdPDNwbFk=
-github.com/iotaledger/hive.go/constraints v0.0.0-20231027195901-620bd7470e42/go.mod h1:dOBOM2s4se3HcWefPe8sQLUalGXJ8yVXw58oK8jke3s=
-github.com/iotaledger/hive.go/core v1.0.0-rc.3.0.20231027195901-620bd7470e42 h1:BC5GkIHyXdoJGdw6Tu5ds2kjw9grFLtwQiuMaKfdLU8=
-github.com/iotaledger/hive.go/core v1.0.0-rc.3.0.20231027195901-620bd7470e42/go.mod h1:Mc+ACqBGPxrPMIPUBOm6/HL0J6m0iVMwjtIEKW3uow8=
-github.com/iotaledger/hive.go/crypto v0.0.0-20231027195901-620bd7470e42 h1:r8TkdQJB7/bJd8cF8z5GQ+rX/7JpbPdPoN7wMoV1OCM=
-github.com/iotaledger/hive.go/crypto v0.0.0-20231027195901-620bd7470e42/go.mod h1:h3o6okvMSEK3KOX6pOp3yq1h9ohTkTfo6X8MzEadeb0=
-github.com/iotaledger/hive.go/ds v0.0.0-20231027195901-620bd7470e42 h1:ytzZZPtclAzLfjxv26frbinCGx3Z6ouUENbx5U7lFGg=
-github.com/iotaledger/hive.go/ds v0.0.0-20231027195901-620bd7470e42/go.mod h1:3XkUSKfHaVxGbT0XAvjNlVYqPzhfLTGhDtdNA5UBPco=
-github.com/iotaledger/hive.go/ierrors v0.0.0-20231027195901-620bd7470e42 h1:QMxd32Y/veVhTDPCiOFgetjUbG7sr9MryF29/rSPkMA=
-github.com/iotaledger/hive.go/ierrors v0.0.0-20231027195901-620bd7470e42/go.mod h1:HcE8B5lP96enc/OALTb2/rIIi+yOLouRoHOKRclKmC8=
-github.com/iotaledger/hive.go/kvstore v0.0.0-20231027195901-620bd7470e42 h1:/xPwStUckZ2V0XPoY496cXU+c5elpHyvYoT6JAmuvRY=
-github.com/iotaledger/hive.go/kvstore v0.0.0-20231027195901-620bd7470e42/go.mod h1:O/U3jtiUDeqqM0MZQFu2UPqS9fUm0C5hNISxlmg/thE=
-github.com/iotaledger/hive.go/lo v0.0.0-20231027195901-620bd7470e42 h1:AvNLzONVMspwx7nD/NyYUgb5Hi7/zgzIOegr1uRD/M8=
-github.com/iotaledger/hive.go/lo v0.0.0-20231027195901-620bd7470e42/go.mod h1:s4kzx9QY1MVWHJralj+3q5kI0eARtrJhphYD/iBbPfo=
-github.com/iotaledger/hive.go/log v0.0.0-20231027195901-620bd7470e42 h1:e1uJAlXE3zeXpa+c4uFOG+/AMFbUlLt2mcrSK5NMxVs=
-github.com/iotaledger/hive.go/log v0.0.0-20231027195901-620bd7470e42/go.mod h1:JvokzmpmFZPDskMlUqqjgHtD8usVJU4nAY/TNMGge8M=
-github.com/iotaledger/hive.go/logger v0.0.0-20231027195901-620bd7470e42 h1:7wjs4t1snBDJ8LOTl+tZhr2ORywSOTgJMppxiIAMA0A=
-github.com/iotaledger/hive.go/logger v0.0.0-20231027195901-620bd7470e42/go.mod h1:aBfAfIB2GO/IblhYt5ipCbyeL9bXSNeAwtYVA3hZaHg=
-github.com/iotaledger/hive.go/runtime v0.0.0-20231027195901-620bd7470e42 h1:1QMJ39qXIx/IZVzus3+97IV7Pa++e+d340TvbMjhiBU=
-github.com/iotaledger/hive.go/runtime v0.0.0-20231027195901-620bd7470e42/go.mod h1:jRw8yFipiPaqmTPHh7hTcxAP9u6pjRGpByS3REJKkbY=
-github.com/iotaledger/hive.go/serializer/v2 v2.0.0-rc.1.0.20231027195901-620bd7470e42 h1:hZli4E9kJUAEQ7gzZR1XbPcpgqvqMPYq8YBPMbrBuos=
-github.com/iotaledger/hive.go/serializer/v2 v2.0.0-rc.1.0.20231027195901-620bd7470e42/go.mod h1:SdK26z8/VhWtxaqCuQrufm80SELgowQPmu9T/8eUQ8g=
-github.com/iotaledger/hive.go/stringify v0.0.0-20231027195901-620bd7470e42 h1:OlDhgvJ48bZxcvTeebJ1b96xtNnJAddejd2Q4rlH1mU=
-github.com/iotaledger/hive.go/stringify v0.0.0-20231027195901-620bd7470e42/go.mod h1:FTo/UWzNYgnQ082GI9QVM9HFDERqf9rw9RivNpqrnTs=
+github.com/iotaledger/hive.go/ads v0.0.0-20231106033111-7f3042d04fc4 h1:3F60Hx0Oi+4p7V5e+Ap8/aagbk0eSZ8jci4GxGXVLmc=
+github.com/iotaledger/hive.go/ads v0.0.0-20231106033111-7f3042d04fc4/go.mod h1:b8w/1e7wk7ZQgTm/2dZPH2pWl7CTlTmgkgaIleaZgFw=
+github.com/iotaledger/hive.go/app v0.0.0-20231106033111-7f3042d04fc4 h1:XhqawtbvRagBjd9MTMtzVAnWggXEQF3Mj9cMPhiTXYg=
+github.com/iotaledger/hive.go/app v0.0.0-20231106033111-7f3042d04fc4/go.mod h1:iM05Js4OhYlTbQqwxbgMIuWq1TT+lfKntg0PeOE8zkU=
+github.com/iotaledger/hive.go/constraints v0.0.0-20231106033111-7f3042d04fc4 h1:GS3d6xi8eiI9rIycajLs4z3vM/u0D9oJ2qEP8f/Mnmw=
+github.com/iotaledger/hive.go/constraints v0.0.0-20231106033111-7f3042d04fc4/go.mod h1:dOBOM2s4se3HcWefPe8sQLUalGXJ8yVXw58oK8jke3s=
+github.com/iotaledger/hive.go/core v1.0.0-rc.3.0.20231106033111-7f3042d04fc4 h1:xz1Vy5YujaXLL6Kx2gU7eueWGZPquimCGXBLimtCSak=
+github.com/iotaledger/hive.go/core v1.0.0-rc.3.0.20231106033111-7f3042d04fc4/go.mod h1:oBpjupsGbCg4WlK9HfXaF5RWtZvA4LmtmuLsMEcz+Qg=
+github.com/iotaledger/hive.go/crypto v0.0.0-20231106033111-7f3042d04fc4 h1:3FNxPWFuNEdEJ17PoNS5ILTcg2b7wHDkLZx2lL3PhIE=
+github.com/iotaledger/hive.go/crypto v0.0.0-20231106033111-7f3042d04fc4/go.mod h1:ePC73xHcQdkbbHApVoF9XfLfjTtCuYJ8+WJepdRoUIw=
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+github.com/iotaledger/hive.go/ds v0.0.0-20231106033111-7f3042d04fc4/go.mod h1:RnYZNMRIXKt/SXVsFA18uUBNDZMQm0h5BykMXjv8/8A=
+github.com/iotaledger/hive.go/ierrors v0.0.0-20231106033111-7f3042d04fc4 h1:yr8sRMURAjVQhWX+HgDm2AwgY2jH1JrZjOf49aUM8CQ=
+github.com/iotaledger/hive.go/ierrors v0.0.0-20231106033111-7f3042d04fc4/go.mod h1:HcE8B5lP96enc/OALTb2/rIIi+yOLouRoHOKRclKmC8=
+github.com/iotaledger/hive.go/kvstore v0.0.0-20231106033111-7f3042d04fc4 h1:N21PVtaSvtG9Qq+3hLEj6Cca4Thx7YTa5ezKuqj3V0Y=
+github.com/iotaledger/hive.go/kvstore v0.0.0-20231106033111-7f3042d04fc4/go.mod h1:gQWd99xA2Wl4DpCqHIeieNUAKbRJDZo1VNnswAbibyA=
+github.com/iotaledger/hive.go/lo v0.0.0-20231106033111-7f3042d04fc4 h1:bK0+pb716B9rBuXDp1+xKh5iX5wp00FF47UjTD+KphM=
+github.com/iotaledger/hive.go/lo v0.0.0-20231106033111-7f3042d04fc4/go.mod h1:lFKoK3stQVscy4k6+Cqd3Chq6u65JoTRhfhzJsmKyY8=
+github.com/iotaledger/hive.go/log v0.0.0-20231106033111-7f3042d04fc4 h1:VJpxS4LePyDXJT1TRAVExm1ELmEH0t79NB08xEGyR/U=
+github.com/iotaledger/hive.go/log v0.0.0-20231106033111-7f3042d04fc4/go.mod h1:61LNutuzo3UnIgC9E8fPCIZ1Xwlb6ApbyTZssMl2cvI=
+github.com/iotaledger/hive.go/logger v0.0.0-20231106033111-7f3042d04fc4 h1:jEcVfw96tzB8yjcHBIfc0qUXZvYkn4wu9/bWscgdlNc=
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+github.com/iotaledger/hive.go/runtime v0.0.0-20231106033111-7f3042d04fc4 h1:hOGlfCiQxIumcWMFxxAp13Ox//SQK0DGcXY3NJf7kGQ=
+github.com/iotaledger/hive.go/runtime v0.0.0-20231106033111-7f3042d04fc4/go.mod h1:6WKyYAkvdY08iW4/w30goNq0GaBTljT0MXXilnQ33wk=
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 github.com/iotaledger/inx-app v1.0.0-rc.3.0.20231031135002-4c79ea5193f5 h1:17JDzMKTMXKF3xys6gPURRddkZhg1LY+xwfhbr/sVqg=
 github.com/iotaledger/inx-app v1.0.0-rc.3.0.20231031135002-4c79ea5193f5/go.mod h1:LsJvoBUVVnY7tkwwByCVtAwmp5bFXdyJNGU/+KVQJVM=
 github.com/iotaledger/inx/go v1.0.0-rc.2.0.20231031134131-b6ad918dc1ac h1:c7R33+TQGMYP6pvLUQQaqpdDFl+GZbhAcfGMI0285fo=
 github.com/iotaledger/inx/go v1.0.0-rc.2.0.20231031134131-b6ad918dc1ac/go.mod h1:qPuMUvCTaghsnYRDnRoRuztTyEKFlmi2S7gb44rH7WM=
-github.com/iotaledger/iota.go/v4 v4.0.0-20231102113728-20b8d01e826e h1:ZYRC1MHn/ghsqtjIpYGTxLQrh5n5eUmC0/YWnJiTRhk=
-github.com/iotaledger/iota.go/v4 v4.0.0-20231102113728-20b8d01e826e/go.mod h1:jqbLYq4a/FwuiPBqFfkAwwxU8vs3+kReRq2/tyX5qRA=
+github.com/iotaledger/iota.go/v4 v4.0.0-20231106063525-564529bf7361 h1:8uHWvSQpTa8FqakKkKwdppk46PUr/FJjFeupi9csa64=
+github.com/iotaledger/iota.go/v4 v4.0.0-20231106063525-564529bf7361/go.mod h1:GXUQi5h4MAtPoBkJ/BRFakVbOiJeU76O0HcXl28mwK8=
 github.com/ipfs/boxo v0.13.1 h1:nQ5oQzcMZR3oL41REJDcTbrvDvuZh3J9ckc9+ILeRQI=
 github.com/ipfs/boxo v0.13.1/go.mod h1:btrtHy0lmO1ODMECbbEY1pxNtrLilvKSYLoGQt1yYCk=
 github.com/ipfs/go-cid v0.4.1 h1:A/T3qGvxi4kpKWWcPC/PgbvDA2bjVLO7n4UeVwnbs/s=
@@ -507,8 +507,6 @@ github.com/opencontainers/runtime-spec v1.1.0/go.mod h1:jwyrGlmzljRJv/Fgzds9SsS/
 github.com/opentracing/opentracing-go v1.2.0 h1:uEJPy/1a5RIPAJ0Ov+OIO8OxWu77jEv+1B0VhjKrZUs=
 github.com/opentracing/opentracing-go v1.2.0/go.mod h1:GxEUsuufX4nBwe+T+Wl9TAgYrxe9dPLANfrWvHYVTgc=
 github.com/openzipkin/zipkin-go v0.1.1/go.mod h1:NtoC/o8u3JlF1lSlyPNswIbeQH9bJTmOf0Erfk+hxe8=
-github.com/orcaman/writerseeker v0.0.0-20200621085525-1d3f536ff85e h1:s2RNOM/IGdY0Y6qfTeUKhDawdHDpK9RGBdx80qN4Ttw=
-github.com/orcaman/writerseeker v0.0.0-20200621085525-1d3f536ff85e/go.mod h1:nBdnFKj15wFbf94Rwfq4m30eAcyY9V/IyKAGQFtqkW0=
 github.com/otiai10/copy v1.14.0 h1:dCI/t1iTdYGtkvCuBG2BgR6KZa83PTclw4U5n2wAllU=
 github.com/otiai10/copy v1.14.0/go.mod h1:ECfuL02W+/FkTWZWgQqXPWZgW9oeKCSQ5qVfSc4qc4w=
 github.com/otiai10/mint v1.5.1 h1:XaPLeE+9vGbuyEHem1JNk3bYc7KKqyI/na0/mLd/Kks=

pkg/core/account/accounts.go

@@ -1,16 +1,15 @@
 package account
 
 import (
-	"bytes"
-	"encoding/binary"
 	"io"
 	"sync/atomic"
 
 	"github.com/iotaledger/hive.go/core/safemath"
 	"github.com/iotaledger/hive.go/ds/shrinkingmap"
 	"github.com/iotaledger/hive.go/ierrors"
 	"github.com/iotaledger/hive.go/runtime/syncutils"
-	"github.com/iotaledger/hive.go/serializer/v2/marshalutil"
+	"github.com/iotaledger/hive.go/serializer/v2"
+	"github.com/iotaledger/hive.go/serializer/v2/stream"
 	iotago "github.com/iotaledger/iota.go/v4"
 )
 
@@ -27,14 +26,9 @@ type Accounts struct {
 
 // NewAccounts creates a new Weights instance.
 func NewAccounts() *Accounts {
-	a := new(Accounts)
-	a.initialize()
-
-	return a
-}
-
-func (a *Accounts) initialize() {
-	a.accountPools = shrinkingmap.New[iotago.AccountID, *Pool]()
+	return &Accounts{
+		accountPools: shrinkingmap.New[iotago.AccountID, *Pool](),
+	}
 }
 
 func (a *Accounts) Has(id iotago.AccountID) bool {
@@ -137,91 +131,80 @@ func (a *Accounts) SelectCommittee(members ...iotago.AccountID) *SeatedAccounts
 }
 
 func AccountsFromBytes(b []byte) (*Accounts, int, error) {
-	return AccountsFromReader(bytes.NewReader(b))
-}
-
-func AccountsFromReader(readSeeker io.ReadSeeker) (*Accounts, int, error) {
-	a := new(Accounts)
-	n, err := a.readFromReadSeeker(readSeeker)
+	reader := stream.NewByteReader(b)
 
-	return a, n, err
-}
-
-func (a *Accounts) readFromReadSeeker(reader io.ReadSeeker) (n int, err error) {
-	a.mutex.Lock()
-	defer a.mutex.Unlock()
-
-	a.initialize()
-
-	var accountCount uint32
-	if err = binary.Read(reader, binary.LittleEndian, &accountCount); err != nil {
-		return n, ierrors.Wrap(err, "unable to read accounts count")
+	a, err := AccountsFromReader(reader)
+	if err != nil {
+		return nil, 0, ierrors.Wrap(err, "unable to read accounts from bytes")
 	}
-	n += 4
-
-	for i := uint32(0); i < accountCount; i++ {
-		var accountID iotago.AccountID
 
-		if _, err = io.ReadFull(reader, accountID[:]); err != nil {
-			return 0, ierrors.Wrap(err, "unable to read accountID")
-		}
-		n += iotago.AccountIDLength
+	return a, reader.BytesRead(), nil
+}
 
-		poolBytes := make([]byte, poolBytesLength)
-		if _, err = io.ReadFull(reader, poolBytes); err != nil {
-			return 0, ierrors.Wrap(err, "unable to read pool bytes")
-		}
-		n += poolBytesLength
+func AccountsFromReader(reader io.Reader) (*Accounts, error) {
+	a := NewAccounts()
 
-		pool, c, err := PoolFromBytes(poolBytes)
+	if err := stream.ReadCollection(reader, serializer.SeriLengthPrefixTypeAsUint32, func(i int) error {
+		accountID, err := stream.Read[iotago.AccountID](reader)
 		if err != nil {
-			return 0, ierrors.Wrap(err, "failed to parse pool")
+			return ierrors.Wrapf(err, "unable to read accountID at index %d", i)
 		}
 
-		if c != poolBytesLength {
-			return 0, ierrors.Wrap(err, "invalid pool bytes length")
+		pool, err := stream.ReadObject(reader, poolBytesLength, PoolFromBytes)
+		if err != nil {
+			return ierrors.Wrapf(err, "unable to read pool at index %d", i)
 		}
 
 		if err := a.setWithoutLocking(accountID, pool); err != nil {
-			return 0, ierrors.Wrapf(err, "failed to set pool for account %s", accountID.String())
+			return ierrors.Wrapf(err, "failed to set pool for account %s", accountID.String())
 		}
+
+		return nil
+	}); err != nil {
+		return nil, ierrors.Wrap(err, "failed to read account data")
 	}
 
-	var reused bool
-	if err = binary.Read(reader, binary.LittleEndian, &reused); err != nil {
-		return n, ierrors.Wrap(err, "unable to read reused flag")
+	reused, err := stream.Read[bool](reader)
+	if err != nil {
+		return nil, ierrors.Wrap(err, "failed to read reused flag")
 	}
+
 	a.reused.Store(reused)
-	n++
 
-	return n, nil
+	return a, nil
 }
 
-func (a *Accounts) Bytes() (bytes []byte, err error) {
+func (a *Accounts) Bytes() ([]byte, error) {
 	a.mutex.RLock()
 	defer a.mutex.RUnlock()
 
-	m := marshalutil.New()
+	byteBuffer := stream.NewByteBuffer()
 
-	m.WriteUint32(uint32(a.accountPools.Size()))
-	var innerErr error
-	a.ForEach(func(id iotago.AccountID, pool *Pool) bool {
-		m.WriteBytes(id[:])
-		poolBytes, err := pool.Bytes()
-		if err != nil {
-			innerErr = err
-			return false
-		}
-		m.WriteBytes(poolBytes)
+	if err := stream.WriteCollection(byteBuffer, serializer.SeriLengthPrefixTypeAsUint32, func() (elementsCount int, err error) {
+		var innerErr error
+		a.ForEach(func(id iotago.AccountID, pool *Pool) bool {
+			if innerErr = stream.Write(byteBuffer, id); innerErr != nil {
+				return false
+			}
 
-		return true
-	})
+			if innerErr = stream.WriteObject(byteBuffer, pool, (*Pool).Bytes); innerErr != nil {
+				return false
+			}
 
-	m.WriteBool(a.reused.Load())
+			return true
+		})
+		if innerErr != nil {
+			return 0, innerErr
+		}
+
+		return a.accountPools.Size(), nil
+	}); err != nil {
+		return nil, ierrors.Wrap(err, "failed to write accounts")
+	}
 
-	if innerErr != nil {
-		return nil, innerErr
+	if err := stream.Write(byteBuffer, a.reused.Load()); err != nil {
+		return nil, ierrors.Wrap(err, "failed to write reused flag")
 	}
 
-	return m.Bytes(), nil
+	return byteBuffer.Bytes()
 }

pkg/core/account/accounts_test.go

@@ -99,7 +99,7 @@ func TestAccounts(t *testing.T) {
 	require.Equal(t, accounts, accounts2)
 
 	// check "AccountsFromReader"
-	accounts3, _, err := account.AccountsFromReader(bytes.NewReader(accountBytes))
+	accounts3, err := account.AccountsFromReader(bytes.NewReader(accountBytes))
 	require.NoError(t, err)
 
 	// check if the new account is the same