From e48a0c796af238ce69db2e81de13e320d42122b6 Mon Sep 17 00:00:00 2001 From: Ivan Kozlovic Date: Thu, 30 Mar 2023 17:53:05 -0600 Subject: [PATCH 1/2] [FIXED] Clustering: leadership acquired actions could get stuck If a leadership changed occurred while leadership actions were executed, before the raft.Barrier() call was made, the server would be stuck in that call. This is because RAFT library notifies the Streaming server code that a leadership changed through a go channel that was just of size 1. Since the streaming server read from the channel and then executes the leadership acquired code, it could not read from the notification channel that caused the RAFT library to block on a go channel send, which then made the Barrier() call block. I believe the right approach is to have a bigger notification go channel instead of making Barrier() time out. If it does timeout, the server should then transfer leadership, which I am afraid could cause a cascading effect if all servers getting elected need longer that the chosen timeout to apply all the preceding entries to the FSM. Signed-off-by: Ivan Kozlovic --- dependencies.md | 33 ++++------ go.mod | 14 ++-- go.sum | 135 ++++++++++++++++++++++++++++---------- server/clustering.go | 4 +- server/clustering_test.go | 99 ++++++++++++++++++++++++++++ server/server.go | 8 +-- 6 files changed, 224 insertions(+), 69 deletions(-) diff --git a/dependencies.md b/dependencies.md index c0d24975..06249668 100644 --- a/dependencies.md +++ b/dependencies.md @@ -6,26 +6,17 @@ This file lists the dependencies used in this repository. |-|-| | Go | BSD 3-Clause "New" or "Revised" License | | github.com/nats-io/nats-streaming-server | Apache License 2.0 | -| github.com/armon/go-metrics v0.0.0-20190430140413-ec5e00d3c878 | MIT | -| github.com/fatih/color v1.7.0 | MIT | -| github.com/go-sql-driver/mysql v1.6.0 | Mozilla Public License 2.0 | +| github.com/go-sql-driver/mysql v1.7.0 | Mozilla Public License 2.0 | | github.com/gogo/protobuf v1.3.2 | Go | -| github.com/golang/protobuf v1.4.2 | BSD 3-Clause "New" or "Revised" License | -| github.com/hashicorp/go-hclog v0.16.1 | MIT | -| github.com/hashicorp/go-immutable-radix v1.0.0 | Mozilla Public License 2.0 | -| github.com/hashicorp/go-msgpack v1.1.5 | BSD 3-Clause "New" or "Revised" License | -| github.com/hashicorp/golang-lru v0.5.0 | Mozilla Public License 2.0 | -| github.com/hashicorp/raft v1.3.1 | Mozilla Public License 2.0 | -| github.com/lib/pq v1.10.2 | [MIT-Like](https://github.com/lib/pq/blob/master/LICENSE.md) | -| github.com/mattn/go-colorable v0.1.4 | MIT | -| github.com/mattn/go-isatty v0.0.10 | MIT | -| github.com/nats-io/jwt/v2 v2.0.2 | Apache License 2.0 | -| github.com/nats-io/nats-server/v2 v2.2.4 | Apache License 2.0 | -| github.com/nats-io/nats.go v1.11.0 | Apache License 2.0 | -| github.com/nats-io/nkeys v0.3.0 | Apache License 2.0 | +| github.com/hashicorp/go-hclog v1.5.0 | MIT | +| github.com/hashicorp/go-msgpack/v2 v2.1.0 | MIT | +| github.com/hashicorp/raft v1.4.0 | Mozilla Public License 2.0 | +| github.com/lib/pq v1.10.7 | [MIT-Like](https://github.com/lib/pq/blob/master/LICENSE.md) | +| github.com/nats-io/nats-server/v2 v2.9.15 | Apache License 2.0 | +| github.com/nats-io/nats.go v1.25.0 | Apache License 2.0 | | github.com/nats-io/nuid v1.0.1 | Apache License 2.0 | -| github.com/nats-io/stan.go v0.8.3 | Apache License 2.0 | -| github.com/prometheus/procfs v0.6.0 | Apache License 2.0 | -| go.etcd.io/bbolt v1.3.5 | MIT | -| golang.org/x/crypto v0.0.0-20210314154223-e6e6c4f2bb5b | BSD 3-Clause "New" or "Revised" License | -| golang.org/x/sys v0.0.0-20210225134936-a50acf3fe073 | BSD 3-Clause "New" or "Revised" License | +| github.com/nats-io/stan.go v0.10.4 | Apache License 2.0 | +| github.com/prometheus/procfs v0.8.0 | Apache License 2.0 | +| go.etcd.io/bbolt v1.3.6 | MIT | +| golang.org/x/crypto v0.6.0 | BSD 3-Clause "New" or "Revised" License | +| golang.org/x/sys v0.5.0 | BSD 3-Clause "New" or "Revised" License | diff --git a/go.mod b/go.mod index d00274d3..5ae01261 100644 --- a/go.mod +++ b/go.mod @@ -5,16 +5,16 @@ go 1.14 require ( github.com/go-sql-driver/mysql v1.7.0 github.com/gogo/protobuf v1.3.2 - github.com/hashicorp/go-hclog v1.1.0 + github.com/hashicorp/go-hclog v1.5.0 github.com/hashicorp/go-msgpack/v2 v2.1.0 - github.com/hashicorp/raft v1.3.11 - github.com/lib/pq v1.10.4 - github.com/nats-io/nats-server/v2 v2.9.11 - github.com/nats-io/nats.go v1.22.1 + github.com/hashicorp/raft v1.4.0 + github.com/lib/pq v1.10.7 + github.com/nats-io/nats-server/v2 v2.9.15 + github.com/nats-io/nats.go v1.25.0 github.com/nats-io/nuid v1.0.1 github.com/nats-io/stan.go v0.10.4 github.com/prometheus/procfs v0.8.0 go.etcd.io/bbolt v1.3.6 - golang.org/x/crypto v0.5.0 - golang.org/x/sys v0.4.1-0.20230105183443-b8be2fde2a9e + golang.org/x/crypto v0.6.0 + golang.org/x/sys v0.5.0 ) diff --git a/go.sum b/go.sum index c363b2f0..9f463932 100644 --- a/go.sum +++ b/go.sum @@ -1,23 +1,37 @@ -github.com/DataDog/datadog-go v2.2.0+incompatible/go.mod h1:LButxg5PwREeZtORoXG3tL4fMGNddJ+vMq1mwgfaqoQ= +github.com/DataDog/datadog-go v3.2.0+incompatible/go.mod h1:LButxg5PwREeZtORoXG3tL4fMGNddJ+vMq1mwgfaqoQ= github.com/DataDog/zstd v1.5.2/go.mod h1:g4AWEaM3yOg3HYfnJ3YIawPnVdXJh9QME85blwSAmyw= github.com/Sereal/Sereal v0.0.0-20221130110801-16a4f76670cd/go.mod h1:D0JMgToj/WdxCgd30Kc1UcA9E+WdZoJqeVOuYW7iTBM= -github.com/armon/go-metrics v0.0.0-20190430140413-ec5e00d3c878 h1:EFSB7Zo9Eg91v7MJPVsifUysc/wPdN+NOnVe6bWbdBM= -github.com/armon/go-metrics v0.0.0-20190430140413-ec5e00d3c878/go.mod h1:3AMJUQhVx52RsWOnlkpikZr01T/yAVN2gn0861vByNg= +github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc= +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/go.mod 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github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= github.com/davecgh/go-xdr v0.0.0-20161123171359-e6a2ba005892/go.mod h1:CTDl0pzVzE5DEzZhPfvhY/9sPFMQIxaJ9VAMs9AagrE= -github.com/fatih/color v1.7.0 h1:DkWD4oS2D8LGGgTQ6IvwJJXSL5Vp2ffcQg58nFV38Ys= -github.com/fatih/color v1.7.0/go.mod h1:Zm6kSWBoL9eyXnKyktHP6abPY2pDugNf5KwzbycvMj4= +github.com/fatih/color v1.13.0 h1:8LOYc1KYPPmyKMuN8QV2DNRWNbLo6LZ0iLs8+mlH53w= +github.com/fatih/color v1.13.0/go.mod h1:kLAiJbzzSOZDVNGyDpeOxJ47H46qBXwg5ILebYFFOfk= +github.com/go-kit/kit v0.8.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as= +github.com/go-kit/kit v0.9.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as= +github.com/go-logfmt/logfmt v0.3.0/go.mod h1:Qt1PoO58o5twSAckw1HlFXLmHsOX5/0LbT9GBnD5lWE= +github.com/go-logfmt/logfmt v0.4.0/go.mod h1:3RMwSq7FuexP4Kalkev3ejPJsZTpXXBr9+V4qmtdjCk= github.com/go-sql-driver/mysql v1.7.0 h1:ueSltNNllEqE3qcWBTD0iQd3IpL/6U+mJxLkazJ7YPc= 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h1:LlEzMj4AhA7rCAGe4KMBDvJI+AwstrUpVNzEA03Pprs= @@ -38,8 +52,8 @@ github.com/google/go-cmp v0.5.9/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeN github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg= github.com/hashicorp/go-cleanhttp v0.5.0/go.mod h1:JpRdi6/HCYpAwUzNwuwqhbovhLtngrth3wmdIIUrZ80= github.com/hashicorp/go-hclog v0.9.1/go.mod h1:5CU+agLiy3J7N7QjHK5d05KxGsuXiQLrjA0H7acj2lQ= -github.com/hashicorp/go-hclog v1.1.0 h1:QsGcniKx5/LuX2eYoeL+Np3UKYPNaN7YKpTh29h8rbw= -github.com/hashicorp/go-hclog v1.1.0/go.mod h1:whpDNt7SSdeAju8AWKIWsul05p54N/39EeqMAyrmvFQ= +github.com/hashicorp/go-hclog v1.5.0 h1:bI2ocEMgcVlz55Oj1xZNBsVi900c7II+fWDyV9o+13c= +github.com/hashicorp/go-hclog v1.5.0/go.mod h1:W4Qnvbt70Wk/zYJryRzDRU/4r0kIg0PVHBcfoyhpF5M= github.com/hashicorp/go-immutable-radix v1.0.0 h1:AKDB1HM5PWEA7i4nhcpwOrO2byshxBjXVn/J/3+z5/0= github.com/hashicorp/go-immutable-radix v1.0.0/go.mod h1:0y9vanUI8NX6FsYoO3zeMjhV/C5i9g4Q3DwcSNZ4P60= 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h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= golang.org/x/sys v0.0.0-20200923182605-d9f96fdee20d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= +golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= +golang.org/x/sys v0.0.0-20210927094055-39ccf1dd6fa6/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= +golang.org/x/sys v0.0.0-20220503163025-988cb79eb6c6/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= golang.org/x/sys v0.2.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= golang.org/x/sys v0.3.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= golang.org/x/sys v0.4.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= -golang.org/x/sys v0.4.1-0.20230105183443-b8be2fde2a9e h1:Lw2b7QX5zDuEsD5ZkJNRUGEGkLuho3UAKsO25Ucv140= -golang.org/x/sys v0.4.1-0.20230105183443-b8be2fde2a9e/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= +golang.org/x/sys v0.5.0 h1:MUK/U/4lj1t1oPg0HfuXDN/Z1wv31ZJ/YcPiGccS4DU= +golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo= golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8= golang.org/x/term v0.2.0/go.mod h1:TVmDHMZPmdnySmBfhjOoOdhjzdE1h4u1VwSiw2l1Nuc= golang.org/x/term v0.4.0/go.mod h1:9P2UbLfCdcvo3p/nzKvsmas4TnlujnuoV9hGgYzW1lQ= +golang.org/x/term v0.5.0/go.mod h1:jMB1sMXY+tzblOD4FWmEbocvup2/aLOaQEp7JmGp78k= golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ= golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk= golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ= golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ= golang.org/x/text v0.4.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8= golang.org/x/text v0.6.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8= -golang.org/x/time v0.0.0-20220922220347-f3bd1da661af h1:Yx9k8YCG3dvF87UAn2tu2HQLf2dt/eR1bXxpLMWeH+Y= -golang.org/x/time v0.0.0-20220922220347-f3bd1da661af/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ= +golang.org/x/text v0.7.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8= +golang.org/x/time v0.3.0 h1:rg5rLMjNzMS1RkNLzCG38eapWhnYLFYXDXj2gOlr8j4= +golang.org/x/time v0.3.0/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ= golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ= 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= @@ -198,13 +254,20 @@ google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp0 google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc= google.golang.org/protobuf v1.28.1 h1:d0NfwRgPtno5B1Wa6L2DAG+KivqkdutMf1UhdNx175w= google.golang.org/protobuf v1.28.1/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I= +gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw= gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= +gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk= gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q= gopkg.in/mgo.v2 v2.0.0-20190816093944-a6b53ec6cb22/go.mod h1:yeKp02qBN3iKW1OzL3MGk2IdtZzaj7SFntXj72NppTA= gopkg.in/vmihailenco/msgpack.v2 v2.9.2/go.mod h1:/3Dn1Npt9+MYyLpYYXjInO/5jvMLamn+AEGwNEOatn8= +gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= +gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= +gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= +gopkg.in/yaml.v2 v2.2.5/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ= gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM= -gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b h1:h8qDotaEPuJATrMmW04NCwg7v22aHH28wwpauUhK9Oo= gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM= +gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA= +gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM= diff --git a/server/clustering.go b/server/clustering.go index 9f93bf3e..379f0ec1 100644 --- a/server/clustering.go +++ b/server/clustering.go @@ -416,7 +416,9 @@ func (s *StanServer) createRaftNode(name string) (bool, error) { transport.TimeoutScale = 1 // Set up a channel for reliable leader notifications. - raftNotifyCh := make(chan bool, 1) + // Make the buffer big enough so that we can sustain leader flapping while still + // inside the leadershipAcquired() function. + raftNotifyCh := make(chan bool, 64) config.NotifyCh = raftNotifyCh fsm := &raftFSM{server: s} diff --git a/server/clustering_test.go b/server/clustering_test.go index 86da36ae..9b6f7b13 100644 --- a/server/clustering_test.go +++ b/server/clustering_test.go @@ -9053,3 +9053,102 @@ func TestClusteringRaftSubsAndConnsLeak(t *testing.T) { }) } } + +func TestClusteringLeaderChangeInLeadershipAcquired(t *testing.T) { + cleanupDatastore(t) + defer cleanupDatastore(t) + cleanupRaftLog(t) + defer cleanupRaftLog(t) + + ns := natsdTest.RunDefaultServer() + defer ns.Shutdown() + + s1sOpts := getTestDefaultOptsForClustering("a", true) + s1 := runServerWithOpts(t, s1sOpts, nil) + defer s1.Shutdown() + + s2sOpts := getTestDefaultOptsForClustering("b", false) + s2 := runServerWithOpts(t, s2sOpts, nil) + defer s2.Shutdown() + + s3sOpts := getTestDefaultOptsForClustering("c", false) + s3 := runServerWithOpts(t, s3sOpts, nil) + defer s3.Shutdown() + + servers := []*StanServer{s1, s2, s3} + leader := getLeader(t, 10*time.Second, servers...) + + sc := NewDefaultConnection(t) + defer sc.Close() + + ch := make(chan struct{}, 1) + if _, err := sc.Subscribe("foo", func(m *stan.Msg) { + m.Ack() + select { + case ch <- struct{}{}: + default: + } + }); err != nil { + t.Fatalf("Error on sub: %v", err) + } + sc.Publish("foo", []byte("hello")) + select { + case <-ch: + case <-time.After(time.Second): + t.Fatalf("Failed to get the message") + } + + var channels []chan struct{} + for _, s := range servers { + if s == leader { + continue + } + // Block the ioLoop of the two followers + ch1, ch2 := s.sendSynchronziationRequest() + select { + case <-ch1: + case <-time.After(2 * time.Second): + t.Fatalf("Did not get notification from ioLoop") + } + channels = append(channels, ch2) + } + + servers = removeServer(servers, leader) + leader.Shutdown() + time.Sleep(500 * time.Millisecond) + leader = nil + waitFor(t, 2*time.Second, 50*time.Millisecond, func() error { + for _, s := range servers { + s.mu.RLock() + raftState := s.raft.Raft.State() + s.mu.RUnlock() + if raftState == raft.Leader { + leader = s + return nil + } + } + return fmt.Errorf("No leader elected yet") + }) + var li int + for i, s := range servers { + if s != leader { + close(channels[i]) + s.Shutdown() + } else { + li = i + } + } + time.Sleep(time.Second) + for _, s := range servers { + if s != leader { + s.mu.RLock() + opts := s.opts + s.mu.RUnlock() + s = runServerWithOpts(t, opts, nil) + defer s.Shutdown() + } + } + time.Sleep(time.Second) + close(channels[li]) + getLeader(t, 10*time.Second, servers...) +} diff --git a/server/server.go b/server/server.go index 4f8244aa..500a1276 100644 --- a/server/server.go +++ b/server/server.go @@ -2223,12 +2223,12 @@ func (s *StanServer) startRaftNode(hasStreamingState bool) error { leaderReady() if err != nil { s.log.Errorf("Error on leadership acquired: %v", err) - switch { - case err == raft.ErrRaftShutdown: + switch err { + case raft.ErrRaftShutdown: // Node shutdown, just return. return - case err == raft.ErrLeadershipLost: - case err == raft.ErrNotLeader: + case raft.ErrLeadershipLost: + case raft.ErrNotLeader: // Node lost leadership, continue loop. continue default: From ee84146d19962dbc059040f0d83f899122387d30 Mon Sep 17 00:00:00 2001 From: Ivan Kozlovic Date: Thu, 30 Mar 2023 18:08:09 -0600 Subject: [PATCH 2/2] Change travis to exclude staticcheck on Go 1.18 Signed-off-by: Ivan Kozlovic --- .travis.yml | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/.travis.yml b/.travis.yml index 6f62ab8a..ea5c699d 100644 --- a/.travis.yml +++ b/.travis.yml @@ -16,8 +16,10 @@ env: go_import_path: github.com/nats-io/nats-streaming-server install: - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then - go install honnef.co/go/tools/cmd/staticcheck@latest; - go install github.com/client9/misspell/cmd/misspell@latest; + if [[ "$TRAVIS_GO_VERSION" =~ 1.19 ]]; then + go install honnef.co/go/tools/cmd/staticcheck@latest; + go install github.com/client9/misspell/cmd/misspell@latest; + fi; fi services: - mysql @@ -27,8 +29,10 @@ before_script: go install; $(exit $(go fmt $GO_LIST | wc -l)); go vet $GO_LIST; - find . -type f -name "*.go" | grep -v "/spb/" | xargs misspell -error -locale US; - staticcheck $GO_LIST; + if [[ "$TRAVIS_GO_VERSION" =~ 1.19 ]]; then + find . -type f -name "*.go" | grep -v "/spb/" | xargs misspell -error -locale US; + staticcheck $GO_LIST; + fi; fi script: - set -e