diff --git a/client/client.go b/client/client.go new file mode 100644 index 0000000..9ccd9cd --- /dev/null +++ b/client/client.go @@ -0,0 +1,53 @@ +package client + +import ( + "context" + "errors" + "time" + + "github.com/ipfs/go-cid" + proto "github.com/ipfs/go-delegated-routing/gen/proto" + ipns "github.com/ipfs/go-ipns" + logging "github.com/ipfs/go-log/v2" + record "github.com/libp2p/go-libp2p-record" + "github.com/libp2p/go-libp2p/core/crypto" + "github.com/libp2p/go-libp2p/core/peer" +) + +var logger = logging.Logger("service/client/delegatedrouting") + +type DelegatedRoutingClient interface { + FindProviders(ctx context.Context, key cid.Cid) ([]peer.AddrInfo, error) + FindProvidersAsync(ctx context.Context, key cid.Cid) (<-chan FindProvidersAsyncResult, error) + GetIPNS(ctx context.Context, id []byte) ([]byte, error) + GetIPNSAsync(ctx context.Context, id []byte) (<-chan GetIPNSAsyncResult, error) + PutIPNS(ctx context.Context, id []byte, record []byte) error + PutIPNSAsync(ctx context.Context, id []byte, record []byte) (<-chan PutIPNSAsyncResult, error) + Provide(ctx context.Context, key []cid.Cid, ttl time.Duration) (time.Duration, error) + ProvideAsync(ctx context.Context, key []cid.Cid, ttl time.Duration) (<-chan time.Duration, error) +} + +type Client struct { + client proto.DelegatedRouting_Client + validator record.Validator + + provider *Provider + identity crypto.PrivKey +} + +var _ DelegatedRoutingClient = (*Client)(nil) + +// NewClient creates a client. +// The Provider and identity parameters are option. If they are nil, the `Provide` method will not function. +func NewClient(c proto.DelegatedRouting_Client, p *Provider, identity crypto.PrivKey) (*Client, error) { + if p != nil && !p.Peer.ID.MatchesPublicKey(identity.GetPublic()) { + return nil, errors.New("identity does not match provider") + } + + return &Client{ + client: c, + validator: ipns.Validator{}, + provider: p, + identity: identity, + }, nil +} diff --git a/client/contentrouting.go b/client/contentrouting.go index ce5f98f..b061385 100644 --- a/client/contentrouting.go +++ b/client/contentrouting.go @@ -21,6 +21,10 @@ func NewContentRoutingClient(c DelegatedRoutingClient) *ContentRoutingClient { } func (c *ContentRoutingClient) Provide(ctx context.Context, key cid.Cid, announce bool) error { + var err error + recordMetrics := startMetrics(ctx, "ContentRoutingClient.Provide") + defer recordMetrics(err) + // If 'true' is // passed, it also announces it, otherwise it is just kept in the local // accounting of which objects are being provided. @@ -28,16 +32,20 @@ func (c *ContentRoutingClient) Provide(ctx context.Context, key cid.Cid, announc return nil } - _, err := c.client.Provide(ctx, []cid.Cid{key}, 24*time.Hour) + _, err = c.client.Provide(ctx, []cid.Cid{key}, 24*time.Hour) return err } func (c *ContentRoutingClient) ProvideMany(ctx context.Context, keys []multihash.Multihash) error { + var err error + recordMetrics := startMetrics(ctx, "ContentRoutingClient.ProvideMany") + defer recordMetrics(err) + keysAsCids := make([]cid.Cid, 0, len(keys)) for _, m := range keys { keysAsCids = append(keysAsCids, cid.NewCidV1(cid.Raw, m)) } - _, err := c.client.Provide(ctx, keysAsCids, 24*time.Hour) + _, err = c.client.Provide(ctx, keysAsCids, 24*time.Hour) return err } @@ -51,13 +59,18 @@ func (c *ContentRoutingClient) Ready() bool { } func (c *ContentRoutingClient) FindProvidersAsync(ctx context.Context, key cid.Cid, numResults int) <-chan peer.AddrInfo { + var err error + recordMetrics := startMetrics(ctx, "ContentRoutingClient.FindProvidersAsync") + addrInfoCh := make(chan peer.AddrInfo) resultCh, err := c.client.FindProvidersAsync(ctx, key) if err != nil { close(addrInfoCh) + recordMetrics(err) return addrInfoCh } go func() { + defer recordMetrics(nil) numProcessed := 0 closed := false for asyncResult := range resultCh { diff --git a/client/findproviders.go b/client/findproviders.go index 5218187..5cf063d 100644 --- a/client/findproviders.go +++ b/client/findproviders.go @@ -2,58 +2,14 @@ package client import ( "context" - "errors" - "time" "github.com/ipfs/go-cid" proto "github.com/ipfs/go-delegated-routing/gen/proto" - ipns "github.com/ipfs/go-ipns" - logging "github.com/ipfs/go-log/v2" "github.com/ipld/edelweiss/values" - record "github.com/libp2p/go-libp2p-record" - "github.com/libp2p/go-libp2p/core/crypto" "github.com/libp2p/go-libp2p/core/peer" "github.com/multiformats/go-multiaddr" ) -var logger = logging.Logger("service/client/delegatedrouting") - -type DelegatedRoutingClient interface { - FindProviders(ctx context.Context, key cid.Cid) ([]peer.AddrInfo, error) - FindProvidersAsync(ctx context.Context, key cid.Cid) (<-chan FindProvidersAsyncResult, error) - GetIPNS(ctx context.Context, id []byte) ([]byte, error) - GetIPNSAsync(ctx context.Context, id []byte) (<-chan GetIPNSAsyncResult, error) - PutIPNS(ctx context.Context, id []byte, record []byte) error - PutIPNSAsync(ctx context.Context, id []byte, record []byte) (<-chan PutIPNSAsyncResult, error) - Provide(ctx context.Context, key []cid.Cid, ttl time.Duration) (time.Duration, error) - ProvideAsync(ctx context.Context, key []cid.Cid, ttl time.Duration) (<-chan time.Duration, error) -} - -type Client struct { - client proto.DelegatedRouting_Client - validator record.Validator - - provider *Provider - identity crypto.PrivKey -} - -var _ DelegatedRoutingClient = (*Client)(nil) - -// NewClient creates a client. -// The Provider and identity parameters are option. If they are nil, the `Provide` method will not function. -func NewClient(c proto.DelegatedRouting_Client, p *Provider, identity crypto.PrivKey) (*Client, error) { - if p != nil && !p.Peer.ID.MatchesPublicKey(identity.GetPublic()) { - return nil, errors.New("identity does not match provider") - } - - return &Client{ - client: c, - validator: ipns.Validator{}, - provider: p, - identity: identity, - }, nil -} - func (fp *Client) FindProviders(ctx context.Context, key cid.Cid) ([]peer.AddrInfo, error) { resps, err := fp.client.FindProviders(ctx, cidsToFindProvidersRequest(key)) if err != nil { diff --git a/client/metrics.go b/client/metrics.go new file mode 100644 index 0000000..63ec978 --- /dev/null +++ b/client/metrics.go @@ -0,0 +1,110 @@ +package client + +import ( + "context" + "errors" + "net" + "time" + + "github.com/ipld/edelweiss/services" + "go.opencensus.io/stats" + "go.opencensus.io/stats/view" + "go.opencensus.io/tag" +) + +var ( + defaultDurationDistribution = view.Distribution(0, 1, 2, 5, 10, 20, 50, 100, 200, 500, 1000, 2000, 5000, 10000, 20000) + + measureDuration = stats.Float64("delegated_routing/duration", "The time to complete an entire request", stats.UnitMilliseconds) + measureRequests = stats.Float64("delegated_routing/requests", "The number of requests made", stats.UnitDimensionless) + + keyName = tag.MustNewKey("name") + keyError = tag.MustNewKey("error") + + durationView = &view.View{ + Measure: measureDuration, + TagKeys: []tag.Key{keyName, keyError}, + Aggregation: defaultDurationDistribution, + } + requestsView = &view.View{ + Measure: measureRequests, + TagKeys: []tag.Key{keyName, keyError}, + Aggregation: view.Sum(), + } + + DefaultViews = []*view.View{ + durationView, + requestsView, + } +) + +// startMetrics begins recording metrics. +// The returned function flushes the metrics when called, recording metrics about the passed error. +func startMetrics(ctx context.Context, name string) (done func(err error)) { + start := time.Now() + + return func(err error) { + latency := time.Since(start) + + errStr := "None" + if err != nil { + logger.Warnw("received delegated routing error", "Error", err) + errStr = metricsErrStr(err) + } + + stats.RecordWithTags(ctx, + []tag.Mutator{ + tag.Upsert(keyName, name), + tag.Upsert(keyError, errStr), + }, + measureDuration.M(float64(latency.Milliseconds())), + measureRequests.M(1), + ) + } +} + +// metricsErrStr returns a string to use for recording metrics from an error. +// We shouldn't use the error string itself as that can result in high-cardinality metrics. +// For more specific root causing, check the logs. +func metricsErrStr(err error) string { + if errors.Is(err, context.DeadlineExceeded) { + return "DeadlineExceeded" + } + if errors.Is(err, context.Canceled) { + return "Canceled" + } + if errors.Is(err, services.ErrSchema) { + return "Schema" + } + + var serviceErr *services.ErrService + if errors.As(err, &serviceErr) { + return "Service" + } + + var protoErr *services.ErrProto + if errors.As(err, &protoErr) { + return "Proto" + } + + var dnsErr *net.DNSError + if errors.As(err, &dnsErr) { + if dnsErr.IsNotFound { + return "DNSNotFound" + } + if dnsErr.IsTimeout { + return "DNSTimeout" + } + return "DNS" + } + + var netErr net.Error + if errors.As(err, &netErr) { + if netErr.Timeout() { + return "NetTimeout" + } + return "Net" + } + + return "Other" +} diff --git a/go.mod b/go.mod index 57113f4..bc298cc 100644 --- a/go.mod +++ b/go.mod @@ -14,6 +14,7 @@ require ( github.com/multiformats/go-multicodec v0.6.0 github.com/multiformats/go-multihash v0.2.1 github.com/polydawn/refmt v0.0.0-20201211092308-30ac6d18308e + go.opencensus.io v0.23.0 ) require ( diff --git a/go.sum b/go.sum index f0793b3..82caabc 100644 --- a/go.sum +++ b/go.sum @@ -1,15 +1,44 @@ +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/benbjohnson/clock v1.1.0/go.mod h1:J11/hYXuz8f4ySSvYwY0FKfm+ezbsZBKZxNJlLklBHA= github.com/benbjohnson/clock v1.3.0 h1:ip6w0uFQkncKQ979AypyG0ER7mqUSBdKLOgAle/AT8A= +github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU= +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/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= github.com/decred/dcrd/crypto/blake256 v1.0.0 h1:/8DMNYp9SGi5f0w7uCm6d6M4OU2rGFK09Y2A4Xv7EE0= github.com/decred/dcrd/dcrec/secp256k1/v4 v4.1.0 h1:HbphB4TFFXpv7MNrT52FGrrgVXF1owhMVTHFZIlnvd4= github.com/decred/dcrd/dcrec/secp256k1/v4 v4.1.0/go.mod h1:DZGJHZMqrU4JJqFAWUS2UO1+lbSKsdiOoYi9Zzey7Fc= +github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4= +github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/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/frankban/quicktest v1.14.3 h1:FJKSZTDHjyhriyC81FLQ0LY93eSai0ZyR/ZIkd3ZUKE= github.com/gogo/protobuf v1.3.2 h1:Ov1cvc58UF3b5XjBnZv7+opcTcQFZebYjWzi34vdm4Q= github.com/gogo/protobuf v1.3.2/go.mod h1:P1XiOD3dCwIKUDQYPy72D8LYyHL2YPYrpS2s69NZV8Q= +github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q= +github.com/golang/groupcache v0.0.0-20200121045136-8c9f03a8e57e h1:1r7pUrabqp18hOBcwBwiTsbnFeTZHV9eER/QT5JVZxY= +github.com/golang/groupcache v0.0.0-20200121045136-8c9f03a8e57e/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc= +github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A= +github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U= +github.com/golang/protobuf v1.3.2/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U= +github.com/golang/protobuf v1.4.0-rc.1/go.mod h1:ceaxUfeHdC40wWswd/P6IGgMaK3YpKi5j83Wpe3EHw8= +github.com/golang/protobuf v1.4.0-rc.1.0.20200221234624-67d41d38c208/go.mod h1:xKAWHe0F5eneWXFV3EuXVDTCmh+JuBKY0li0aMyXATA= +github.com/golang/protobuf v1.4.0-rc.2/go.mod h1:LlEzMj4AhA7rCAGe4KMBDvJI+AwstrUpVNzEA03Pprs= +github.com/golang/protobuf v1.4.0-rc.4.0.20200313231945-b860323f09d0/go.mod h1:WU3c8KckQ9AFe+yFwt9sWVRKCVIyN9cPHBJSNnbL67w= +github.com/golang/protobuf v1.4.0/go.mod h1:jodUvKwWbYaEsadDk5Fwe5c77LiNKVO9IDvqG2KuDX0= +github.com/golang/protobuf v1.4.1/go.mod h1:U8fpvMrcmy5pZrNK1lt4xCsGvpyWQ/VVv6QDs8UjoX8= +github.com/golang/protobuf v1.4.3/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw735rRwI= +github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M= +github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU= +github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU= +github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE= +github.com/google/go-cmp v0.5.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE= +github.com/google/go-cmp v0.5.3/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE= github.com/google/go-cmp v0.5.8 h1:e6P7q2lk1O+qJJb4BtCQXlK8vWEO8V1ZeuEdJNOqZyg= +github.com/google/uuid v1.1.2/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo= github.com/gopherjs/gopherjs v0.0.0-20181017120253-0766667cb4d1 h1:EGx4pi6eqNxGaHF6qqu48+N2wcFQ5qg5FXgOdqsJ5d8= github.com/ipfs/go-cid v0.3.2 h1:OGgOd+JCFM+y1DjWPmVH+2/4POtpDzwcr7VgnB7mZXc= github.com/ipfs/go-cid v0.3.2/go.mod h1:gQ8pKqT/sUxGY+tIwy1RPpAojYu7jAyCp5Tz1svoupw= @@ -79,6 +108,7 @@ github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZb github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4= github.com/polydawn/refmt v0.0.0-20201211092308-30ac6d18308e h1:ZOcivgkkFRnjfoTcGsDq3UQYiBmekwLA+qg0OjyB/ls= github.com/polydawn/refmt v0.0.0-20201211092308-30ac6d18308e/go.mod h1:uIp+gprXxxrWSjjklXD+mN4wed/tMfjMMmN/9+JsA9o= +github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA= github.com/rogpeppe/go-internal v1.6.1 h1:/FiVV8dS/e+YqF2JvO3yXRFbBLTIuSDkuC7aBOAvL+k= github.com/smartystreets/assertions v0.0.0-20180927180507-b2de0cb4f26d h1:zE9ykElWQ6/NYmHa3jpm/yHnI4xSofP+UP6SpjHcSeM= github.com/smartystreets/goconvey v1.6.4 h1:fv0U8FUIMPNf1L9lnHLvLhgicrIVChEkdzIKYqbNC9s= @@ -88,12 +118,15 @@ github.com/spaolacci/murmur3 v1.1.0 h1:7c1g84S4BPRrfL5Xrdp6fOJ206sU9y293DDHaoy0b github.com/spaolacci/murmur3 v1.1.0/go.mod h1:JwIasOWyU6f++ZhiEuf87xNszmSA2myDM2Kzu9HwQUA= github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME= github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI= +github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg= github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg= github.com/stretchr/testify v1.8.0 h1:pSgiaMZlXftHpm5L7V1+rVB+AZJydKsMxsQBIJw4PKk= github.com/warpfork/go-wish v0.0.0-20200122115046-b9ea61034e4a h1:G++j5e0OC488te356JvdhaM8YS6nMsjLAYF7JxCv07w= github.com/yuin/goldmark v1.1.27/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74= github.com/yuin/goldmark v1.2.1/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74= github.com/yuin/goldmark v1.3.5/go.mod h1:mwnBkeHKe2W/ZEtQ+71ViKU8L12m81fl3OWwC1Zlc8k= +go.opencensus.io v0.23.0 h1:gqCw0LfLxScz8irSi8exQc7fyQ0fKQU/qnC/X8+V/1M= +go.opencensus.io v0.23.0/go.mod h1:XItmlyltB5F7CS4xOC1DcqMoFqwtC6OG2xF7mCv7P7E= go.uber.org/atomic v1.7.0/go.mod h1:fEN4uk6kAWBTFdckzkM89CLk9XfWZrxpCo0nPH17wJc= go.uber.org/atomic v1.10.0 h1:9qC72Qh0+3MqyJbAn8YU5xVq1frD8bn3JtD2oXtafVQ= go.uber.org/atomic v1.10.0/go.mod h1:LUxbIzbOniOlMKjJjyPfpl4v+PKK2cNJn91OQbhoJI0= @@ -111,20 +144,32 @@ golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8U golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto= golang.org/x/crypto v0.0.0-20220525230936-793ad666bf5e h1:T8NU3HyQ8ClP4SEE+KbFlg6n0NhuTsN4MyznaarGsZM= golang.org/x/crypto v0.0.0-20220525230936-793ad666bf5e/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4= +golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA= +golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE= +golang.org/x/lint v0.0.0-20190227174305-5b3e6a55c961/go.mod h1:wehouNa3lNwaWXcvxsM5YxQ5yQlVC4a0KAMCusXpPoU= +golang.org/x/lint v0.0.0-20190313153728-d0100b6bd8b3/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc= golang.org/x/lint v0.0.0-20190930215403-16217165b5de/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc= golang.org/x/mod v0.2.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA= golang.org/x/mod v0.3.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA= golang.org/x/mod v0.4.2/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA= +golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4= +golang.org/x/net v0.0.0-20180826012351-8a410e7b638d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4= +golang.org/x/net v0.0.0-20190213061140-3a22650c66bd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4= golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod 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h1:bj7SfCRtBDWHUb9sn golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ= golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ= golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ= +golang.org/x/tools v0.0.0-20190114222345-bf090417da8b/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ= +golang.org/x/tools v0.0.0-20190226205152-f727befe758c/go.mod h1:9Yl7xja0Znq3iFh3HoIrodX9oNMXvdceNzlUR8zjMvY= golang.org/x/tools v0.0.0-20190311212946-11955173bddd/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs= +golang.org/x/tools v0.0.0-20190524140312-2c0ae7006135/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q= golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo= golang.org/x/tools v0.0.0-20200619180055-7c47624df98f/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE= golang.org/x/tools 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