Merge pull request #1484 from nspcc-dev/oracle/neofs

Integrate NeoFS into oracle module

go.mod

@@ -7,12 +7,13 @@ require (
 	github.com/alicebob/miniredis v2.5.0+incompatible
 	github.com/btcsuite/btcd v0.20.1-beta
 	github.com/dgraph-io/badger/v2 v2.0.3
-	github.com/frankban/quicktest v1.10.0 // indirect
 	github.com/go-redis/redis v6.10.2+incompatible
+	github.com/gogo/protobuf v1.1.1
 	github.com/gorilla/websocket v1.4.2
 	github.com/hashicorp/golang-lru v0.5.4
 	github.com/mr-tron/base58 v1.1.2
 	github.com/nspcc-dev/dbft v0.0.0-20210302103605-cc75991b7cfb
+	github.com/nspcc-dev/neofs-api-go v1.24.0
 	github.com/nspcc-dev/rfc6979 v0.2.0
 	github.com/pierrec/lz4 v2.5.2+incompatible
 	github.com/prometheus/client_golang v1.2.1
@@ -25,7 +26,7 @@ require (
 	golang.org/x/crypto v0.0.0-20190701094942-4def268fd1a4
 	golang.org/x/term v0.0.0-20201210144234-2321bbc49cbf
 	golang.org/x/text v0.3.0
-	golang.org/x/tools v0.0.0-20180318012157-96caea41033d
+	golang.org/x/tools v0.0.0-20190524140312-2c0ae7006135
 	gopkg.in/abiosoft/ishell.v2 v2.0.0
 	gopkg.in/yaml.v2 v2.2.4
 )

go.sum

@@ -1,8 +1,8 @@
+cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/CityOfZion/neo-go v0.62.1-pre.0.20191114145240-e740fbe708f8/go.mod h1:MJCkWUBhi9pn/CrYO1Q3P687y2KeahrOPS9BD9LDGb0=
 github.com/CityOfZion/neo-go v0.70.1-pre.0.20191209120015-fccb0085941e/go.mod h1:0enZl0az8xA6PVkwzEOwPWVJGqlt/GO4hA4kmQ5Xzig=
 github.com/CityOfZion/neo-go v0.70.1-pre.0.20191212173117-32ac01130d4c/go.mod h1:JtlHfeqLywZLswKIKFnAp+yzezY4Dji9qlfQKB2OD/I=
-github.com/CityOfZion/neo-go v0.71.1-pre.0.20200129171427-f773ec69fb84 h1:gcTXk9aO+PhHudJNPFJ9H4RmKjdzz40Tvv2NE1BwRZ0=
 github.com/CityOfZion/neo-go v0.71.1-pre.0.20200129171427-f773ec69fb84/go.mod h1:FLI526IrRWHmcsO+mHsCbj64pJZhwQFTLJZu+A4PGOA=
 github.com/DataDog/zstd v1.4.1 h1:3oxKN3wbHibqx897utPC2LTQU4J+IHWWJO+glkAkpFM=
 github.com/DataDog/zstd v1.4.1/go.mod h1:1jcaCB/ufaK+sKp1NBhlGmpz41jOoPQ35bpF36t7BBo=
@@ -19,13 +19,10 @@ github.com/abiosoft/ishell v2.0.0+incompatible h1:zpwIuEHc37EzrsIYah3cpevrIc8Oma
 github.com/abiosoft/ishell v2.0.0+incompatible/go.mod h1:HQR9AqF2R3P4XXpMpI0NAzgHf/aS6+zVXRj14cVk9qg=
 github.com/abiosoft/readline v0.0.0-20180607040430-155bce2042db h1:CjPUSXOiYptLbTdr1RceuZgSFDQ7U15ITERUGrUORx8=
 github.com/abiosoft/readline v0.0.0-20180607040430-155bce2042db/go.mod h1:rB3B4rKii8V21ydCbIzH5hZiCQE7f5E9SzUb/ZZx530=
-github.com/aead/siphash v1.0.1 h1:FwHfE/T45KPKYuuSAKyyvE+oPWcaQ+CUmFW0bPlM+kg=
 github.com/aead/siphash v1.0.1/go.mod h1:Nywa3cDsYNNK3gaciGTWPwHt0wlpNV15vwmswBAUSII=
 github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
-github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751 h1:JYp7IbQjafoB+tBA3gMyHYHrpOtNuDiK/uB5uXxq5wM=
 github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
 github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
-github.com/alecthomas/units v0.0.0-20190717042225-c3de453c63f4 h1:Hs82Z41s6SdL1CELW+XaDYmOH4hkBN4/N9og/AsOv7E=
 github.com/alecthomas/units v0.0.0-20190717042225-c3de453c63f4/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
 github.com/alicebob/gopher-json v0.0.0-20180125190556-5a6b3ba71ee6 h1:45bxf7AZMwWcqkLzDAQugVEwedisr5nRJ1r+7LYnv0U=
 github.com/alicebob/gopher-json v0.0.0-20180125190556-5a6b3ba71ee6/go.mod h1:SGnFV6hVsYE877CKEZ6tDNTjaSXYUk6QqoIK6PrAtcc=
@@ -38,36 +35,30 @@ github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
 github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
 github.com/btcsuite/btcd v0.20.1-beta h1:Ik4hyJqN8Jfyv3S4AGBOmyouMsYE3EdYODkMbQjwPGw=
 github.com/btcsuite/btcd v0.20.1-beta/go.mod h1:wVuoA8VJLEcwgqHBwHmzLRazpKxTv13Px/pDuV7OomQ=
-github.com/btcsuite/btclog v0.0.0-20170628155309-84c8d2346e9f h1:bAs4lUbRJpnnkd9VhRV3jjAVU7DJVjMaK+IsvSeZvFo=
 github.com/btcsuite/btclog v0.0.0-20170628155309-84c8d2346e9f/go.mod h1:TdznJufoqS23FtqVCzL0ZqgP5MqXbb4fg/WgDys70nA=
-github.com/btcsuite/btcutil v0.0.0-20190425235716-9e5f4b9a998d h1:yJzD/yFppdVCf6ApMkVy8cUxV0XrxdP9rVf6D87/Mng=
 github.com/btcsuite/btcutil v0.0.0-20190425235716-9e5f4b9a998d/go.mod h1:+5NJ2+qvTyV9exUAL/rxXi3DcLg2Ts+ymUAY5y4NvMg=
-github.com/btcsuite/go-socks v0.0.0-20170105172521-4720035b7bfd h1:R/opQEbFEy9JGkIguV40SvRY1uliPX8ifOvi6ICsFCw=
 github.com/btcsuite/go-socks v0.0.0-20170105172521-4720035b7bfd/go.mod h1:HHNXQzUsZCxOoE+CPiyCTO6x34Zs86zZUiwtpXoGdtg=
-github.com/btcsuite/goleveldb v0.0.0-20160330041536-7834afc9e8cd h1:qdGvebPBDuYDPGi1WCPjy1tGyMpmDK8IEapSsszn7HE=
 github.com/btcsuite/goleveldb v0.0.0-20160330041536-7834afc9e8cd/go.mod h1:F+uVaaLLH7j4eDXPRvw78tMflu7Ie2bzYOH4Y8rRKBY=
-github.com/btcsuite/snappy-go v0.0.0-20151229074030-0bdef8d06723 h1:ZA/jbKoGcVAnER6pCHPEkGdZOV7U1oLUedErBHCUMs0=
 github.com/btcsuite/snappy-go v0.0.0-20151229074030-0bdef8d06723/go.mod h1:8woku9dyThutzjeg+3xrA5iCpBRH8XEEg3lh6TiUghc=
-github.com/btcsuite/websocket v0.0.0-20150119174127-31079b680792 h1:R8vQdOQdZ9Y3SkEwmHoWBmX1DNXhXZqlTpq6s4tyJGc=
 github.com/btcsuite/websocket v0.0.0-20150119174127-31079b680792/go.mod h1:ghJtEyQwv5/p4Mg4C0fgbePVuGr935/5ddU9Z3TmDRY=
-github.com/btcsuite/winsvc v1.0.0 h1:J9B4L7e3oqhXOcm+2IuNApwzQec85lE+QaikUcCs+dk=
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+github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
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 github.com/cespare/xxhash/v2 v2.1.0 h1:yTUvW7Vhb89inJ+8irsUqiWjh8iT6sQPZiQzI6ReGkA=
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 github.com/chzyer/logex v1.1.10 h1:Swpa1K6QvQznwJRcfTfQJmTE72DqScAa40E+fbHEXEE=
 github.com/chzyer/logex v1.1.10/go.mod h1:+Ywpsq7O8HXn0nuIou7OrIPyXbp3wmkHB+jjWRnGsAI=
-github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e h1:fY5BOSpyZCqRo5OhCuC+XN+r/bBCmeuuJtjz+bCNIf8=
 github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e/go.mod h1:nSuG5e5PlCu98SY8svDHJxuZscDgtXS6KTTbou5AhLI=
 github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1 h1:q763qf9huN11kDQavWsoZXJNW3xEE4JJyHa5Q25/sd8=
 github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1/go.mod h1:Q3SI9o4m/ZMnBNeIyt5eFwwo7qiLfzFZmjNmxjkiQlU=
+github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
+github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGXZJjfX53e64911xZQV5JYwmTeXPW+k8Sc=
 github.com/coreos/etcd v3.3.10+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc32PjwdhPthX9715RE=
 github.com/coreos/go-etcd v2.0.0+incompatible/go.mod h1:Jez6KQU2B/sWsbdaef3ED8NzMklzPG4d5KIOhIy30Tk=
 github.com/coreos/go-semver v0.2.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk=
 github.com/cpuguy83/go-md2man v1.0.10/go.mod h1:SmD6nW6nTyfqj6ABTjUi3V3JVMnlJmwcJI5acqYI6dE=
 github.com/davecgh/go-spew v0.0.0-20171005155431-ecdeabc65495/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
@@ -79,7 +70,9 @@ github.com/dgryski/go-farm v0.0.0-20190423205320-6a90982ecee2 h1:tdlZCpZ/P9DhczC
 github.com/dgryski/go-farm v0.0.0-20190423205320-6a90982ecee2/go.mod h1:SqUrOPUnsFjfmXRMNPybcSiG0BgUW2AuFH8PAnS2iTw=
 github.com/dustin/go-humanize v1.0.0 h1:VSnTsYCnlFHaM2/igO1h6X3HA71jcobQuxemgkq4zYo=
 github.com/dustin/go-humanize v1.0.0/go.mod h1:HtrtbFcZ19U5GC7JDqmcUSB87Iq5E25KnS6fMYU6eOk=
-github.com/etcd-io/bbolt v1.3.3 h1:gSJmxrs37LgTqR/oyJBWok6k6SvXEUerFTbltIhXkBM=
+github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
+github.com/envoyproxy/go-control-plane v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1mIlRU8Am5FuJP05cCM98=
+github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
 github.com/etcd-io/bbolt v1.3.3/go.mod h1:ZF2nL25h33cCyBtcyWeZ2/I3HQOfTP+0PIEvHjkjCrw=
 github.com/fatih/color v1.7.0 h1:DkWD4oS2D8LGGgTQ6IvwJJXSL5Vp2ffcQg58nFV38Ys=
 github.com/fatih/color v1.7.0/go.mod h1:Zm6kSWBoL9eyXnKyktHP6abPY2pDugNf5KwzbycvMj4=
@@ -96,25 +89,35 @@ github.com/go-logfmt/logfmt v0.4.0/go.mod h1:3RMwSq7FuexP4Kalkev3ejPJsZTpXXBr9+V
 github.com/go-redis/redis v6.10.2+incompatible h1:SLbqrO/Ik1nhXA5/cbEs1P5MUBo1Qq4ihlNfGnnipPw=
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 github.com/go-stack/stack v1.8.0/go.mod h1:v0f6uXyyMGvRgIKkXu+yp6POWl0qKG85gN/melR3HDY=
-github.com/go-yaml/yaml v2.1.0+incompatible h1:RYi2hDdss1u4YE7GwixGzWwVo47T8UQwnTLB6vQiq+o=
 github.com/go-yaml/yaml v2.1.0+incompatible/go.mod h1:w2MrLa16VYP0jy6N7M5kHaCkaLENm+P+Tv+MfurjSw0=
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-github.com/golang/protobuf v1.2.0 h1:P3YflyNX/ehuJFLhxviNdFxQPkGK5cDcApsge1SqnvM=
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@@ -123,19 +126,14 @@ github.com/hashicorp/hcl v1.0.0/go.mod h1:E5yfLk+7swimpb2L/Alb/PJmXilQ/rhwaUYs4T
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@@ -143,12 +141,10 @@ github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
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@@ -163,20 +159,23 @@ github.com/modern-go/reflect2 v1.0.1/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3Rllmb
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@@ -192,8 +191,9 @@ github.com/pelletier/go-toml v1.2.0/go.mod h1:5z9KED0ma1S8pY6P1sdut58dfprrGBbd/9
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@@ -254,15 +254,26 @@ golang.org/x/crypto v0.0.0-20181203042331-505ab145d0a9/go.mod h1:6SG95UA2DQfeDnf
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+google.golang.org/grpc v1.29.1 h1:EC2SB8S04d2r73uptxphDSUG+kTKVgjRPF+N3xpxRB4=
+google.golang.org/grpc v1.29.1/go.mod h1:itym6AZVZYACWQqET3MqgPpjcuV5QH3BxFS3IjizoKk=
+google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
+google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
+google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
+google.golang.org/protobuf v1.20.1-0.20200309200217-e05f789c0967/go.mod h1:A+miEFZTKqfCUM6K7xSMQL9OKL/b6hQv+e19PK+JZNE=
+google.golang.org/protobuf v1.21.0/go.mod h1:47Nbq4nVaFHyn7ilMalzfO3qCViNmqZ2kzikPIcrTAo=
+google.golang.org/protobuf v1.23.0 h1:4MY060fB1DLGMB/7MBTLnwQUY6+F09GEiz6SsrNqyzM=
+google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
 gopkg.in/abiosoft/ishell.v2 v2.0.0 h1:/J5yh3nWYSSGFjALcitTI9CLE0Tu27vBYHX0srotqOc=
 gopkg.in/abiosoft/ishell.v2 v2.0.0/go.mod h1:sFp+cGtH6o4s1FtpVPTMcHq2yue+c4DGOVohJCPUzwY=
 gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
@@ -303,3 +336,5 @@ gopkg.in/yaml.v2 v2.2.4 h1:/eiJrUcujPVeJ3xlSWaiNi3uSVmDGBK1pDHUHAnao1I=
 gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
+honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=

pkg/config/oracle_config.go

@@ -4,13 +4,20 @@ import "time"
 
 // OracleConfiguration is a config for the oracle module.
 type OracleConfiguration struct {
-	Enabled               bool          `yaml:"Enabled"`
+	Enabled               bool               `yaml:"Enabled"`
-	AllowPrivateHost      bool          `yaml:"AllowPrivateHost"`
+	AllowPrivateHost      bool               `yaml:"AllowPrivateHost"`
-	Nodes                 []string      `yaml:"Nodes"`
+	Nodes                 []string           `yaml:"Nodes"`
-	MaxTaskTimeout        time.Duration `yaml:"MaxTaskTimeout"`
+	NeoFS                 NeoFSConfiguration `yaml:"NeoFS"`
-	RefreshInterval       time.Duration `yaml:"RefreshInterval"`
+	MaxTaskTimeout        time.Duration      `yaml:"MaxTaskTimeout"`
-	MaxConcurrentRequests int           `yaml:"MaxConcurrentRequests"`
+	RefreshInterval       time.Duration      `yaml:"RefreshInterval"`
-	RequestTimeout        time.Duration `yaml:"RequestTimeout"`
+	MaxConcurrentRequests int                `yaml:"MaxConcurrentRequests"`
-	ResponseTimeout       time.Duration `yaml:"ResponseTimeout"`
+	RequestTimeout        time.Duration      `yaml:"RequestTimeout"`
-	UnlockWallet          Wallet        `yaml:"UnlockWallet"`
+	ResponseTimeout       time.Duration      `yaml:"ResponseTimeout"`
+	UnlockWallet          Wallet             `yaml:"UnlockWallet"`
+}
+
+// NeoFSConfiguration is a config for the NeoFS service.
+type NeoFSConfiguration struct {
+	Nodes   []string `yaml:"Nodes"`
+	Timeout int      `yaml:"Timeout"`
 }

pkg/services/oracle/neofs/neofs.go

@@ -0,0 +1,173 @@
+package neofs
+
+import (
+	"bytes"
+	"context"
+	"crypto/sha256"
+	"errors"
+	"fmt"
+	"net/url"
+	"strconv"
+	"strings"
+
+	"github.com/gogo/protobuf/jsonpb"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	"github.com/nspcc-dev/neofs-api-go/pkg/client"
+	"github.com/nspcc-dev/neofs-api-go/pkg/container"
+	"github.com/nspcc-dev/neofs-api-go/pkg/object"
+	objectv2 "github.com/nspcc-dev/neofs-api-go/v2/object"
+)
+
+const (
+	// URIScheme is the name of neofs URI scheme.
+	URIScheme = "neofs"
+
+	// containerIDSize is the size of container id in bytes.
+	containerIDSize = sha256.Size
+	// objectIDSize is the size of container id in bytes.
+	objectIDSize = sha256.Size
+	// rangeSep is a separator between offset and length.
+	rangeSep = '|'
+
+	rangeCmd  = "range"
+	headerCmd = "header"
+	hashCmd   = "hash"
+)
+
+// Various validation errors.
+var (
+	ErrInvalidScheme    = errors.New("invalid URI scheme")
+	ErrMissingObject    = errors.New("object ID is missing from URI")
+	ErrInvalidContainer = errors.New("container ID is invalid")
+	ErrInvalidObject    = errors.New("object ID is invalid")
+	ErrInvalidRange     = errors.New("object range is invalid (expected 'Offset|Length')")
+	ErrInvalidCommand   = errors.New("invalid command")
+)
+
+// Get returns neofs object from the provided url.
+// URI scheme is "neofs://<Container-ID>/<Object-ID/<Command>/<Params>".
+// If Command is not provided, full object is requested.
+func Get(ctx context.Context, priv *keys.PrivateKey, u *url.URL, addr string) ([]byte, error) {
+	objectAddr, ps, err := parseNeoFSURL(u)
+	if err != nil {
+		return nil, err
+	}
+
+	c, err := client.New(&priv.PrivateKey, client.WithAddress(addr))
+	if err != nil {
+		return nil, err
+	}
+
+	switch {
+	case len(ps) == 0 || ps[0] == "": // Get request
+		return getPayload(ctx, c, objectAddr)
+	case ps[0] == rangeCmd:
+		return getRange(ctx, c, objectAddr, ps[1:]...)
+	case ps[0] == headerCmd:
+		return getHeader(ctx, c, objectAddr)
+	case ps[0] == hashCmd:
+		return getHash(ctx, c, objectAddr, ps[1:]...)
+	default:
+		return nil, ErrInvalidCommand
+	}
+}
+
+// parseNeoFSURL returns parsed neofs address.
+func parseNeoFSURL(u *url.URL) (*object.Address, []string, error) {
+	if u.Scheme != URIScheme {
+		return nil, nil, ErrInvalidScheme
+	}
+
+	ps := strings.Split(strings.TrimPrefix(u.Path, "/"), "/")
+	if len(ps) == 0 || ps[0] == "" {
+		return nil, nil, ErrMissingObject
+	}
+
+	containerID := container.NewID()
+	if err := containerID.Parse(u.Hostname()); err != nil {
+		return nil, nil, fmt.Errorf("%w: %v", ErrInvalidContainer, err)
+	}
+
+	objectID := object.NewID()
+	if err := objectID.Parse(ps[0]); err != nil {
+		return nil, nil, fmt.Errorf("%w: %v", ErrInvalidObject, err)
+	}
+
+	objectAddr := object.NewAddress()
+	objectAddr.SetContainerID(containerID)
+	objectAddr.SetObjectID(objectID)
+	return objectAddr, ps[1:], nil
+}
+
+func getPayload(ctx context.Context, c *client.Client, addr *object.Address) ([]byte, error) {
+	obj, err := c.GetObject(ctx, new(client.GetObjectParams).WithAddress(addr))
+	if err != nil {
+		return nil, err
+	}
+	return obj.Payload(), nil
+}
+
+func getRange(ctx context.Context, c *client.Client, addr *object.Address, ps ...string) ([]byte, error) {
+	if len(ps) == 0 {
+		return nil, ErrInvalidRange
+	}
+	r, err := parseRange(ps[0])
+	if err != nil {
+		return nil, err
+	}
+	return c.ObjectPayloadRangeData(ctx, new(client.RangeDataParams).WithAddress(addr).WithRange(r))
+}
+
+func getHeader(ctx context.Context, c *client.Client, addr *object.Address) ([]byte, error) {
+	obj, err := c.GetObjectHeader(ctx, new(client.ObjectHeaderParams).WithAddress(addr))
+	if err != nil {
+		return nil, err
+	}
+	msg := objectv2.ObjectToGRPCMessage(obj.ToV2()).Header
+	b := bytes.NewBuffer(nil)
+	err = new(jsonpb.Marshaler).Marshal(b, msg)
+	return b.Bytes(), err
+}
+
+func getHash(ctx context.Context, c *client.Client, addr *object.Address, ps ...string) ([]byte, error) {
+	if len(ps) == 0 || ps[0] == "" { // hash of the full payload
+		obj, err := c.GetObjectHeader(ctx, new(client.ObjectHeaderParams).WithAddress(addr))
+		if err != nil {
+			return nil, err
+		}
+		return obj.PayloadChecksum().Sum(), nil
+	}
+	r, err := parseRange(ps[0])
+	if err != nil {
+		return nil, err
+	}
+	hashes, err := c.ObjectPayloadRangeSHA256(ctx,
+		new(client.RangeChecksumParams).WithAddress(addr).WithRangeList(r))
+	if err != nil {
+		return nil, err
+	}
+	if len(hashes) == 0 {
+		return nil, fmt.Errorf("%w: empty response", ErrInvalidRange)
+	}
+	return hashes[0][:], nil
+}
+
+func parseRange(s string) (*object.Range, error) {
+	sepIndex := strings.IndexByte(s, rangeSep)
+	if sepIndex < 0 {
+		return nil, ErrInvalidRange
+	}
+	offset, err := strconv.ParseUint(s[:sepIndex], 10, 64)
+	if err != nil {
+		return nil, fmt.Errorf("%w: invalid offset", ErrInvalidRange)
+	}
+	length, err := strconv.ParseUint(s[sepIndex+1:], 10, 64)
+	if err != nil {
+		return nil, fmt.Errorf("%w: invalid length", ErrInvalidRange)
+	}
+
+	r := object.NewRange()
+	r.SetOffset(offset)
+	r.SetLength(length)
+	return r, nil
+}

pkg/services/oracle/neofs/neofs_test.go

@@ -0,0 +1,83 @@
+package neofs
+
+import (
+	"errors"
+	"net/url"
+	"testing"
+
+	"github.com/nspcc-dev/neofs-api-go/pkg/container"
+	"github.com/nspcc-dev/neofs-api-go/pkg/object"
+	"github.com/stretchr/testify/require"
+)
+
+func TestParseRange(t *testing.T) {
+	t.Run("valid", func(t *testing.T) {
+		r, err := parseRange("13|87")
+		require.NoError(t, err)
+		require.Equal(t, uint64(13), r.GetOffset())
+		require.Equal(t, uint64(87), r.GetLength())
+	})
+	t.Run("missing offset", func(t *testing.T) {
+		_, err := parseRange("|87")
+		require.Error(t, err)
+	})
+	t.Run("missing length", func(t *testing.T) {
+		_, err := parseRange("13|")
+		require.Error(t, err)
+	})
+	t.Run("missing separator", func(t *testing.T) {
+		_, err := parseRange("1387")
+		require.Error(t, err)
+	})
+	t.Run("invalid number", func(t *testing.T) {
+		_, err := parseRange("ab|87")
+		require.Error(t, err)
+	})
+}
+
+func TestParseNeoFSURL(t *testing.T) {
+	cStr := "C3swfg8MiMJ9bXbeFG6dWJTCoHp9hAEZkHezvbSwK1Cc"
+	cid := container.NewID()
+	require.NoError(t, cid.Parse(cStr))
+
+	oStr := "3nQH1L8u3eM9jt2mZCs6MyjzdjerdSzBkXCYYj4M4Znk"
+	oid := object.NewID()
+	require.NoError(t, oid.Parse(oStr))
+
+	validPrefix := "neofs://" + cStr + "/" + oStr
+	objectAddr := object.NewAddress()
+	objectAddr.SetContainerID(cid)
+	objectAddr.SetObjectID(oid)
+
+	testCases := []struct {
+		url    string
+		params []string
+		err    error
+	}{
+		{validPrefix, nil, nil},
+		{validPrefix + "/", []string{""}, nil},
+		{validPrefix + "/range/1|2", []string{"range", "1|2"}, nil},
+		{"neoffs://" + cStr + "/" + oStr, nil, ErrInvalidScheme},
+		{"neofs://" + cStr, nil, ErrMissingObject},
+		{"neofs://" + cStr + "ooo/" + oStr, nil, ErrInvalidContainer},
+		{"neofs://" + cStr + "/ooo" + oStr, nil, ErrInvalidObject},
+	}
+	for _, tc := range testCases {
+		t.Run(tc.url, func(t *testing.T) {
+			u, err := url.Parse(tc.url)
+			require.NoError(t, err)
+			oa, ps, err := parseNeoFSURL(u)
+			if tc.err != nil {
+				require.True(t, errors.Is(err, tc.err), "got: %#v", err)
+				return
+			}
+			require.NoError(t, err)
+			require.Equal(t, objectAddr, oa)
+			require.Equal(t, len(tc.params), len(ps))
+			if len(ps) != 0 {
+				require.Equal(t, tc.params, ps)
+			}
+		})
+
+	}
+}

pkg/services/oracle/request.go

@@ -1,6 +1,7 @@
 package oracle
 
 import (
+	"context"
 	"errors"
 	"net/http"
 	"net/url"
@@ -10,6 +11,7 @@ import (
 	"github.com/nspcc-dev/neo-go/pkg/core/storage"
 	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
 	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	"github.com/nspcc-dev/neo-go/pkg/services/oracle/neofs"
 	"go.uber.org/zap"
 )
 
@@ -134,6 +136,17 @@ func (o *Oracle) processRequest(priv *keys.PrivateKey, req request) error {
 		default:
 			resp.Code = transaction.Error
 		}
+	} else if err == nil && u.Scheme == neofs.URIScheme {
+		ctx, cancel := context.WithTimeout(context.Background(), time.Duration(o.MainCfg.NeoFS.Timeout)*time.Millisecond)
+		defer cancel()
+		index := (int(req.ID) + incTx.attempts) % len(o.MainCfg.NeoFS.Nodes)
+		res, err := neofs.Get(ctx, priv, u, o.MainCfg.NeoFS.Nodes[index])
+		if err != nil {
+			resp.Code = transaction.Error
+		} else {
+			resp.Code = transaction.Success
+			resp.Result = res
+		}
 	}
 
 	currentHeight := o.Chain.BlockHeight()