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05 April 2024, 22:58:32 UTC
Revision df3eee455c9d2a4a9698a35aa0dfe6d5d2efd53d authored by Callum Waters on 04 February 2020, 12:02:20 UTC, committed by GitHub on 04 February 2020, 12:02:20 UTC 
lite2: replace primary provider with alternative when unavailable (#4354)
 
Closes issue #4338

Uses a wrapper function around both the signedHeader and validatorSet calls to the primary provider which attempts to retrieve the information 5 times before deeming the provider unavailable and replacing the primary provider with the first alternative before trying recursively again (until all alternatives are depleted)

Employs a mutex lock for any operations involving the providers of the light client to ensure no operations occurs whilst the new primary is chosen.

Commits:

* created swapProvider function

* eliminates old primary provider after replacement. Uses a mutex when changing providers

* renamed to replaceProvider

* created wrapped functions for signed header and val set

* created test for primary provider replacement

* implemented suggested revisions

* created Witnesses() and Primary()

* modified backoffAndJitterTime

* modified backoffAndJitterTime

* changed backoff base and jitter to functional arguments

* implemented suggested changes

* removed backoff function

* changed exp function to match go version

* halved the backoff time

* removed seeding and added comments

* fixed incorrect test

* extract backoff timeout calc into a function

Co-authored-by: Anton Kaliaev <anton.kalyaev@gmail.com>
1 parent 9b9f1be
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Tip revision: df3eee455c9d2a4a9698a35aa0dfe6d5d2efd53d authored by Callum Waters on 04 February 2020, 12:02:20 UTC
lite2: replace primary provider with alternative when unavailable (#4354)
Tip revision: df3eee4
go.mod 
module github.com/tendermint/tendermint

go 1.12

require (
	github.com/ChainSafe/go-schnorrkel v0.0.0-20200102211924-4bcbc698314f
	github.com/VividCortex/gohistogram v1.0.0 // indirect
	github.com/Workiva/go-datastructures v1.0.50
	github.com/btcsuite/btcd v0.0.0-20190115013929-ed77733ec07d
	github.com/btcsuite/btcutil v0.0.0-20180706230648-ab6388e0c60a
	github.com/fortytw2/leaktest v1.3.0
	github.com/go-kit/kit v0.9.0
	github.com/go-logfmt/logfmt v0.5.0
	github.com/gogo/protobuf v1.3.1
	github.com/golang/protobuf v1.3.3
	github.com/google/gofuzz v1.0.0 // indirect
	github.com/gorilla/websocket v1.4.1
	github.com/gtank/merlin v0.1.1-0.20191105220539-8318aed1a79f
	github.com/inconshreveable/mousetrap v1.0.0 // indirect
	github.com/libp2p/go-buffer-pool v0.0.2
	github.com/magiconair/properties v1.8.1
	github.com/pkg/errors v0.9.1
	github.com/prometheus/client_golang v0.9.3
	github.com/rcrowley/go-metrics v0.0.0-20180503174638-e2704e165165
	github.com/rs/cors v1.7.0
	github.com/snikch/goodman v0.0.0-20171125024755-10e37e294daa
	github.com/spf13/cobra v0.0.1
	github.com/spf13/viper v1.6.2
	github.com/stretchr/testify v1.4.0
	github.com/tendermint/go-amino v0.14.1
	github.com/tendermint/tm-db v0.4.0
	golang.org/x/crypto v0.0.0-20191206172530-e9b2fee46413
	golang.org/x/net v0.0.0-20190628185345-da137c7871d7
	golang.org/x/sys v0.0.0-20190813064441-fde4db37ae7a // indirect
	google.golang.org/grpc v1.27.0
)
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