diff --git a/catacomb/catacomb.go b/catacomb/catacomb.go index ce45bd3..67ff35a 100644 --- a/catacomb/catacomb.go +++ b/catacomb/catacomb.go @@ -223,9 +223,9 @@ func (catacomb *Catacomb) Kill(err error) { if err == tomb.ErrDying { err = errors.New("bad catacomb Kill: tomb.ErrDying") } - cause := errors.Cause(err) - if match, ok := cause.(dyingError); ok { - if catacomb != match.catacomb { + var dyingErr dyingError + if errors.As(err, &dyingErr) { + if catacomb != dyingErr.catacomb { err = errors.Errorf("bad catacomb Kill: other catacomb's ErrDying") } else { err = tomb.ErrDying diff --git a/catacomb/catacomb_test.go b/catacomb/catacomb_test.go index e5f89fc..eae770a 100644 --- a/catacomb/catacomb_test.go +++ b/catacomb/catacomb_test.go @@ -245,7 +245,7 @@ func (s *CatacombSuite) TestAddWhenDyingReturnsWorkerError(c *gc.C) { s.fix.catacomb.Kill(nil) actual := s.fix.catacomb.Add(w) - c.Assert(errors.Cause(actual), gc.Equals, expect) + c.Assert(errors.Is(actual, expect), jc.IsTrue) w.assertDead(c) }) c.Check(err, jc.ErrorIsNil) @@ -267,7 +267,7 @@ func (s *CatacombSuite) TestAddWhenDeadReturnsWorkerError(c *gc.C) { expect := errors.New("squelch") w := s.fix.startErrorWorker(c, expect) actual := s.fix.catacomb.Add(w) - c.Assert(errors.Cause(actual), gc.Equals, expect) + c.Assert(errors.Is(actual, expect), jc.IsTrue) w.assertDead(c) } @@ -394,8 +394,7 @@ func (s *CatacombSuite) TestStressAddKillRaces(c *gc.C) { // the important thing is that it already exists so we can hit // Add() as soon as possible, just like the Kill() below. if err := s.fix.catacomb.Add(w); err != nil { - cause := errors.Cause(err) - c.Check(cause, gc.Equals, errFailed) + c.Check(errors.Is(err, errFailed), jc.IsTrue) } }) together(func() { @@ -407,8 +406,7 @@ func (s *CatacombSuite) TestStressAddKillRaces(c *gc.C) { close(block) wg.Wait() }) - cause := errors.Cause(err) - c.Check(cause, gc.Equals, errFailed) + c.Check(errors.Is(err, errFailed), jc.IsTrue) } func (s *CatacombSuite) TestReusedCatacomb(c *gc.C) { diff --git a/dependency/engine.go b/dependency/engine.go index 1084208..0a518e1 100644 --- a/dependency/engine.go +++ b/dependency/engine.go @@ -491,7 +491,9 @@ func (engine *Engine) context(name string, inputs []string, abort <-chan struct{ } } -var errAborted = errors.New("aborted before delay elapsed") +const ( + errAborted = errors.ConstError("aborted before delay elapsed") +) // runWorker starts the supplied manifold's worker and communicates it back to the // loop goroutine; waits for worker completion; and communicates any error encountered @@ -520,10 +522,10 @@ func (engine *Engine) runWorker(name string, delay time.Duration, start StartFun startWorkerAndWait := func() error { worker, err := startAfterDelay() - switch errors.Cause(err) { - case errAborted: + switch { + case errors.Is(err, errAborted): return errAborted - case nil: + case err == nil: engine.config.Logger.Tracef("running %q manifold worker", name) default: return err @@ -596,18 +598,18 @@ func (engine *Engine) gotStopped(name string, err error, resourceLog []resourceA // Copy current info and check for reasons to stop the engine. info := engine.current[name] - switch errors.Cause(err) { - case nil: + switch { + case err == nil: engine.config.Logger.Debugf("%q manifold worker completed successfully", name) info.recentErrors = 0 - case errAborted: + case errors.Is(err, errAborted): // The start attempt was aborted, so we haven't really started. engine.config.Logger.Tracef("%q manifold worker bounced while starting", name) // If we have been aborted while trying to start, we are more likely // to be able to start, so reset the start attempts. info.startAttempts = 0 info.recentErrors = 1 - case ErrMissing: + case errors.Is(err, ErrMissing): engine.config.Logger.Tracef("%q manifold worker failed to start: %v", name, err) // missing a dependency does (not?) trigger exponential backoff info.recentErrors = 1 @@ -661,19 +663,19 @@ func (engine *Engine) gotStopped(name string, err error, resourceLog []resourceA engine.requestStart(name, engine.config.BounceDelay) } else { // If we didn't stop it ourselves, we need to interpret the error. - switch errors.Cause(err) { - case nil, errAborted: + switch { + case err == nil, errors.Is(err, errAborted): // Nothing went wrong; the task completed successfully. Nothing // needs to be done (unless the inputs change, in which case it // gets to check again). - case ErrMissing: + case errors.Is(err, ErrMissing): // The task can't even start with the current state. Nothing more // can be done (until the inputs change, in which case we retry // anyway). - case ErrBounce: + case errors.Is(err, ErrBounce): // The task exited but wanted to restart immediately. engine.requestStart(name, engine.config.BounceDelay) - case ErrUninstall: + case errors.Is(err, ErrUninstall): // The task should never run again, and can be removed completely. engine.uninstall(name) default: diff --git a/dependency/engine_test.go b/dependency/engine_test.go index e984fb2..bd96208 100644 --- a/dependency/engine_test.go +++ b/dependency/engine_test.go @@ -168,7 +168,7 @@ func (s *EngineSuite) TestStartGetUndeclaredName(c *gc.C) { err = engine.Install("other-task", dependency.Manifold{ Start: func(context dependency.Context) (worker.Worker, error) { err := context.Get("some-task", nil) - c.Check(errors.Cause(err), gc.Equals, dependency.ErrMissing) + c.Check(errors.Is(err, dependency.ErrMissing), jc.IsTrue) c.Check(err, gc.ErrorMatches, `"some-task" not declared: dependency not available`) close(done) // Return a real worker so we don't keep restarting and potentially double-closing. @@ -665,7 +665,7 @@ func (s *EngineSuite) TestWorstError(c *gc.C) { mh2.InjectError(c, errors.New("pong")) err = workertest.CheckKilled(c, engine) - c.Check(errors.Cause(err), gc.Equals, worstErr) + c.Check(errors.Is(err, worstErr), jc.IsTrue) c.Check(callCount, gc.Equals, 2) }) } diff --git a/dependency/interface.go b/dependency/interface.go index 0e7cb7d..b1fadad 100644 --- a/dependency/interface.go +++ b/dependency/interface.go @@ -111,23 +111,6 @@ type Context interface { // not be called again until its declared inputs change. type StartFunc func(context Context) (worker.Worker, error) -// ErrMissing can be returned by a StartFunc or a worker to indicate to -// the engine that it can't be usefully restarted until at least one of its -// dependencies changes. There's no way to specify *which* dependency you need, -// because that's a lot of implementation hassle for little practical gain. -var ErrMissing = errors.New("dependency not available") - -// ErrBounce can be returned by a StartFunc or a worker to indicate to -// the engine that it should be restarted immediately, instead of -// waiting for ErrorDelay. This is useful for workers which restart -// themselves to alert dependents that an output has changed. -var ErrBounce = errors.New("restart immediately") - -// ErrUninstall can be returned by a StartFunc or a worker to indicate to the -// engine that it can/should never run again, and that the originating manifold -// should be completely removed. -var ErrUninstall = errors.New("resource permanently unavailable") - // FilterFunc is an error conversion function for errors returned from workers // or StartFuncs. type FilterFunc func(error) error @@ -145,3 +128,22 @@ type IsFatalFunc func(err error) bool // WorstErrorFunc is used to rank fatal errors, to allow an Engine to return the // single most important error it's encountered. type WorstErrorFunc func(err0, err1 error) error + +const ( + // ErrBounce can be returned by a StartFunc or a worker to indicate to + // the engine that it should be restarted immediately, instead of + // waiting for ErrorDelay. This is useful for workers which restart + // themselves to alert dependents that an output has changed. + ErrBounce = errors.ConstError("restart immediately") + + // ErrMissing can be returned by a StartFunc or a worker to indicate to + // the engine that it can't be usefully restarted until at least one of its + // dependencies changes. There's no way to specify *which* dependency you need, + // because that's a lot of implementation hassle for little practical gain. + ErrMissing = errors.ConstError("dependency not available") + + // ErrUninstall can be returned by a StartFunc or a worker to indicate to the + // engine that it can/should never run again, and that the originating manifold + // should be completely removed. + ErrUninstall = errors.ConstError("resource permanently unavailable") +) diff --git a/go.mod b/go.mod index f690661..dfa741f 100644 --- a/go.mod +++ b/go.mod @@ -1,11 +1,11 @@ module github.com/juju/worker/v3 -go 1.17 +go 1.19 require ( github.com/juju/clock v0.0.0-20220203021603-d9deb868a28a github.com/juju/collections v0.0.0-20220203020748-febd7cad8a7a - github.com/juju/errors v0.0.0-20220203013757-bd733f3c86b9 + github.com/juju/errors v1.0.0 github.com/juju/loggo v0.0.0-20210728185423-eebad3a902c4 github.com/juju/testing v0.0.0-20220203020004-a0ff61f03494 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c diff --git a/go.sum b/go.sum index ce9b86d..2f47bc2 100644 --- a/go.sum +++ b/go.sum @@ -1,36 +1,17 @@ -github.com/Azure/go-ntlmssp v0.0.0-20211209120228-48547f28849e/go.mod h1:chxPXzSsl7ZWRAuOIE23GDNzjWuZquvFlgA8xmpunjU= -github.com/ChrisTrenkamp/goxpath v0.0.0-20210404020558-97928f7e12b6/go.mod h1:nuWgzSkT5PnyOd+272uUmV0dnAnAn42Mk7PiQC5VzN4= github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E= -github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= -github.com/gofrs/uuid v4.2.0+incompatible/go.mod h1:b2aQJv3Z4Fp6yNu3cdSllBxTCLRxnplIgP/c0N/04lM= -github.com/golang/mock v1.5.0/go.mod h1:CWnOUgYIOo4TcNZ0wHX3YZCqsaM1I1Jvs6v3mP3KVu8= -github.com/google/go-cmp v0.5.6/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE= -github.com/gorilla/securecookie v1.1.1/go.mod h1:ra0sb63/xPlUeL+yeDciTfxMRAA+MP+HVt/4epWDjd4= -github.com/gorilla/sessions v1.2.1/go.mod h1:dk2InVEVJ0sfLlnXv9EAgkf6ecYs/i80K/zI+bUmuGM= -github.com/hashicorp/go-uuid v1.0.2/go.mod h1:6SBZvOh/SIDV7/2o3Jml5SYk/TvGqwFJ/bN7x4byOro= -github.com/jcmturner/aescts/v2 v2.0.0/go.mod h1:AiaICIRyfYg35RUkr8yESTqvSy7csK90qZ5xfvvsoNs= -github.com/jcmturner/dnsutils/v2 v2.0.0/go.mod h1:b0TnjGOvI/n42bZa+hmXL+kFJZsFT7G4t3HTlQ184QM= -github.com/jcmturner/gofork v1.0.0/go.mod h1:MK8+TM0La+2rjBD4jE12Kj1pCCxK7d2LK/UM3ncEo0o= -github.com/jcmturner/goidentity/v6 v6.0.1/go.mod h1:X1YW3bgtvwAXju7V3LCIMpY0Gbxyjn/mY9zx4tFonSg= -github.com/jcmturner/gokrb5/v8 v8.4.2/go.mod h1:sb+Xq/fTY5yktf/VxLsE3wlfPqQjp0aWNYyvBVK62bc= -github.com/jcmturner/rpc/v2 v2.0.3/go.mod h1:VUJYCIDm3PVOEHw8sgt091/20OJjskO/YJki3ELg/Hc= github.com/juju/ansiterm v0.0.0-20160907234532-b99631de12cf/go.mod h1:UJSiEoRfvx3hP73CvoARgeLjaIOjybY9vj8PUPPFGeU= github.com/juju/ansiterm v0.0.0-20180109212912-720a0952cc2a/go.mod h1:UJSiEoRfvx3hP73CvoARgeLjaIOjybY9vj8PUPPFGeU= -github.com/juju/ansiterm v0.0.0-20210706145210-9283cdf370b5/go.mod h1:UJSiEoRfvx3hP73CvoARgeLjaIOjybY9vj8PUPPFGeU= github.com/juju/clock v0.0.0-20190205081909-9c5c9712527c/go.mod h1:nD0vlnrUjcjJhqN5WuCWZyzfd5AHZAC9/ajvbSx69xA= -github.com/juju/clock v0.0.0-20220202072423-1b0f830854c4/go.mod h1:zDZCPSgCJQINeZtQwHx2/cFk4seaBC8Yiqe8V82xiP0= github.com/juju/clock v0.0.0-20220203021603-d9deb868a28a h1:Az/6CM/P5guGHNy7r6TkOCctv3lDmN3W1uhku7QMupk= github.com/juju/clock v0.0.0-20220203021603-d9deb868a28a/go.mod h1:GZ/FY8Cqw3KHG6DwRVPUKbSPTAwyrU28xFi5cqZnLsc= github.com/juju/cmd v0.0.0-20171107070456-e74f39857ca0/go.mod h1:yWJQHl73rdSX4DHVKGqkAip+huBslxRwS8m9CrOLq18= -github.com/juju/cmd/v3 v3.0.0-20220202061353-b1cc80b193b0/go.mod h1:EoGJiEG+vbMwO9l+Es0SDTlaQPjH6nLcnnc4NfZB3cY= github.com/juju/collections v0.0.0-20200605021417-0d0ec82b7271/go.mod h1:5XgO71dV1JClcOJE+4dzdn4HrI5LiyKd7PlVG6eZYhY= github.com/juju/collections v0.0.0-20220203020748-febd7cad8a7a h1:d7eZO8OS/ZXxdP0uq3E8CdoA1qNFaecAv90UxrxaY2k= github.com/juju/collections v0.0.0-20220203020748-febd7cad8a7a/go.mod h1:JWeZdyttIEbkR51z2S13+J+aCuHVe0F6meRy+P0YGDo= github.com/juju/errors v0.0.0-20150916125642-1b5e39b83d18/go.mod h1:W54LbzXuIE0boCoNJfwqpmkKJ1O4TCTZMetAt6jGk7Q= github.com/juju/errors v0.0.0-20200330140219-3fe23663418f/go.mod h1:W54LbzXuIE0boCoNJfwqpmkKJ1O4TCTZMetAt6jGk7Q= -github.com/juju/errors v0.0.0-20210818161939-5560c4c073ff/go.mod h1:i1eL7XREII6aHpQ2gApI/v6FkVUDEBremNkcBCKYAcY= -github.com/juju/errors v0.0.0-20220203013757-bd733f3c86b9 h1:EJHbsNpQyupmMeWTq7inn+5L/WZ7JfzCVPJ+DP9McCQ= -github.com/juju/errors v0.0.0-20220203013757-bd733f3c86b9/go.mod h1:TRm7EVGA3mQOqSVcBySRY7a9Y1/gyVhh/WTCnc5sD4U= +github.com/juju/errors v1.0.0 h1:yiq7kjCLll1BiaRuNY53MGI0+EQ3rF6GB+wvboZDefM= +github.com/juju/errors v1.0.0/go.mod h1:B5x9thDqx0wIMH3+aLIMP9HjItInYWObRovoCFM5Qe8= github.com/juju/gnuflag v0.0.0-20171113085948-2ce1bb71843d/go.mod h1:2PavIy+JPciBPrBUjwbNvtwB6RQlve+hkpll6QSNmOE= github.com/juju/httpprof v0.0.0-20141217160036-14bf14c30767/go.mod h1:+MaLYz4PumRkkyHYeXJ2G5g5cIW0sli2bOfpmbaMV/g= github.com/juju/loggo v0.0.0-20170605014607-8232ab8918d9/go.mod h1:vgyd7OREkbtVEN/8IXZe5Ooef3LQePvuBm9UWj6ZL8U= @@ -40,33 +21,25 @@ github.com/juju/loggo v0.0.0-20210728185423-eebad3a902c4/go.mod h1:NIXFioti1SmKA github.com/juju/mgo/v2 v2.0.0-20210302023703-70d5d206e208 h1:/WiCm+Vpj87e4QWuWwPD/bNE9kDrWCLvPBHOQNcG2+A= github.com/juju/mgo/v2 v2.0.0-20210302023703-70d5d206e208/go.mod h1:0OChplkvPTZ174D2FYZXg4IB9hbEwyHkD+zT+/eK+Fg= github.com/juju/mutex v0.0.0-20171110020013-1fe2a4bf0a3a/go.mod h1:Y3oOzHH8CQ0Ppt0oCKJ2JFO81/EsWenH5AEqigLH+yY= -github.com/juju/mutex/v2 v2.0.0-20220128011612-57176ebdcfa3/go.mod h1:TTCG9BJD9rCC4DZFz3jA0QvCqFDHw8Eqz0jstwY7RTQ= github.com/juju/retry v0.0.0-20151029024821-62c620325291/go.mod h1:OohPQGsr4pnxwD5YljhQ+TZnuVRYpa5irjugL1Yuif4= github.com/juju/retry v0.0.0-20180821225755-9058e192b216 h1:/eQL7EJQKFHByJe3DeE8Z36yqManj9UY5zppDoQi4FU= github.com/juju/retry v0.0.0-20180821225755-9058e192b216/go.mod h1:OohPQGsr4pnxwD5YljhQ+TZnuVRYpa5irjugL1Yuif4= github.com/juju/testing v0.0.0-20180402130637-44801989f0f7/go.mod h1:63prj8cnj0tU0S9OHjGJn+b1h0ZghCndfnbQolrYTwA= -github.com/juju/testing v0.0.0-20180517134105-72703b1e95eb/go.mod h1:63prj8cnj0tU0S9OHjGJn+b1h0ZghCndfnbQolrYTwA= github.com/juju/testing v0.0.0-20190723135506-ce30eb24acd2/go.mod h1:63prj8cnj0tU0S9OHjGJn+b1h0ZghCndfnbQolrYTwA= github.com/juju/testing v0.0.0-20210302031854-2c7ee8570c07/go.mod h1:7lxZW0B50+xdGFkvhAb8bwAGt6IU87JB1H9w4t8MNVM= -github.com/juju/testing v0.0.0-20210324180055-18c50b0c2098/go.mod h1:7lxZW0B50+xdGFkvhAb8bwAGt6IU87JB1H9w4t8MNVM= -github.com/juju/testing v0.0.0-20220202055744-1ad0816210a6/go.mod h1:QgWc2UdIPJ8t3rnvv95tFNOsQDfpXYEZDbP281o3b2c= github.com/juju/testing v0.0.0-20220203020004-a0ff61f03494 h1:XEDzpuZb8Ma7vLja3+5hzUqVTvAqm5Y+ygvnDs5iTMM= github.com/juju/testing v0.0.0-20220203020004-a0ff61f03494/go.mod h1:rUquetT0ALL48LHZhyRGvjjBH8xZaZ8dFClulKK5wK4= github.com/juju/utils v0.0.0-20180424094159-2000ea4ff043/go.mod h1:6/KLg8Wz/y2KVGWEpkK9vMNGkOnu4k/cqs8Z1fKjTOk= -github.com/juju/utils v0.0.0-20200116185830-d40c2fe10647 h1:wQpkHVbIIpz1PCcLYku9KFWsJ7aEMQXHBBmLy3tRBTk= github.com/juju/utils v0.0.0-20200116185830-d40c2fe10647/go.mod h1:6/KLg8Wz/y2KVGWEpkK9vMNGkOnu4k/cqs8Z1fKjTOk= github.com/juju/utils/v2 v2.0.0-20200923005554-4646bfea2ef1/go.mod h1:fdlDtQlzundleLLz/ggoYinEt/LmnrpNKcNTABQATNI= -github.com/juju/utils/v3 v3.0.0-20220130232349-cd7ecef0e94a/go.mod h1:LzwbbEN7buYjySp4nqnti6c6olSqRXUk6RkbSUUP1n8= github.com/juju/utils/v3 v3.0.0-20220202114721-338bb0530e89 h1:AabsPzXjiUEs53myZfvZ62h+QZKDpsEAYKaW0IEgURU= github.com/juju/utils/v3 v3.0.0-20220202114721-338bb0530e89/go.mod h1:wf5w+8jyTh2IYnSX0sHnMJo4ZPwwuiBWn+xN3DkQg4k= github.com/juju/version v0.0.0-20161031051906-1f41e27e54f2/go.mod h1:kE8gK5X0CImdr7qpSKl3xB2PmpySSmfj7zVbkZFs81U= github.com/juju/version v0.0.0-20180108022336-b64dbd566305/go.mod h1:kE8gK5X0CImdr7qpSKl3xB2PmpySSmfj7zVbkZFs81U= -github.com/juju/version v0.0.0-20191219164919-81c1be00b9a6 h1:nrqc9b4YKpKV4lPI3GPPFbo5FUuxkWxgZE2Z8O4lgaw= github.com/juju/version v0.0.0-20191219164919-81c1be00b9a6/go.mod h1:kE8gK5X0CImdr7qpSKl3xB2PmpySSmfj7zVbkZFs81U= github.com/juju/version/v2 v2.0.0-20211007103408-2e8da085dc23 h1:wtEPbidt1VyHlb8RSztU6ySQj29FLsOQiI9XiJhXDM4= github.com/juju/version/v2 v2.0.0-20211007103408-2e8da085dc23/go.mod h1:Ljlbryh9sYaUSGXucslAEDf0A2XUSGvDbHJgW8ps6nc= github.com/julienschmidt/httprouter v1.1.1-0.20151013225520-77a895ad01eb/go.mod h1:SYymIcj16QtmaHHD7aYtjjsJG7VTCxuUUipMqKk8s4w= -github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo= github.com/kr/pretty v0.2.1 h1:Fmg33tUaq4/8ym9TJN1x7sLJnHVwhP33CNkpYV/7rwI= github.com/kr/pretty v0.2.1/go.mod h1:ipq/a2n7PKx3OHsz4KJII5eveXtPO4qwEXGdVfWzfnI= github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ= @@ -74,66 +47,35 @@ github.com/kr/text v0.1.0/go.mod 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-golang.org/x/net v0.0.0-20211112202133-69e39bad7dc2/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y= golang.org/x/net v0.0.0-20211216030914-fe4d6282115f h1:hEYJvxw1lSnWIl8X9ofsYMklzaDs90JI2az5YMd4fPM= golang.org/x/net v0.0.0-20211216030914-fe4d6282115f/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y= -golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= -golang.org/x/sys v0.0.0-20200116001909-b77594299b42/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= -golang.org/x/sys v0.0.0-20200223170610-d5e6a3e2c0ae/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= golang.org/x/sys v0.0.0-20200323222414-85ca7c5b95cd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= golang.org/x/sys 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v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo= -golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0= -golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0= -golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0= gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= gopkg.in/check.v1 v1.0.0-20160105164936-4f90aeace3a2/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= -gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk= gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q= gopkg.in/errgo.v1 v1.0.0-20161222125816-442357a80af5/go.mod h1:u0ALmqvLRxLI95fkdCEWrE6mhWYZW1aMOJHp5YXLHTg= @@ -144,10 +86,8 @@ gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWD gopkg.in/tomb.v2 v2.0.0-20161208151619-d5d1b5820637 h1:yiW+nvdHb9LVqSHQBXfZCieqV4fzYhNBql77zY0ykqs= gopkg.in/tomb.v2 v2.0.0-20161208151619-d5d1b5820637/go.mod h1:BHsqpu/nsuzkT5BpiH1EMZPLyqSMM8JbIavyFACoFNk= gopkg.in/yaml.v2 v2.0.0-20170712054546-1be3d31502d6/go.mod h1:JAlM8MvJe8wmxCU4Bli9HhUf9+ttbYbLASfIpnQbh74= -gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY= 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= launchpad.net/gocheck v0.0.0-20140225173054-000000000087/go.mod h1:hj7XX3B/0A+80Vse0e+BUHsHMTEhd0O4cpUHr/e/BUM= launchpad.net/xmlpath v0.0.0-20130614043138-000000000004/go.mod h1:vqyExLOM3qBx7mvYRkoxjSCF945s0mbe7YynlKYXtsA= diff --git a/runner.go b/runner.go index 3f15ff0..3c0ae1a 100644 --- a/runner.go +++ b/runner.go @@ -13,13 +13,13 @@ import ( "gopkg.in/tomb.v2" ) -// DefaultRestartDelay holds the default length of time that a worker -// will wait between exiting and being restarted by a Runner. -const DefaultRestartDelay = 3 * time.Second +const ( + // DefaultRestartDelay holds the default length of time that a worker + // will wait between exiting and being restarted by a Runner. + DefaultRestartDelay = 3 * time.Second -var ( - ErrAborted = errors.New("aborted waiting for worker") - ErrDead = errors.New("worker runner is not running") + ErrAborted = errors.ConstError("aborted waiting for worker") + ErrDead = errors.ConstError("worker runner is not running") ) // Runner runs a set of workers, restarting them as necessary diff --git a/runner_test.go b/runner_test.go index c3839c2..5212bb6 100644 --- a/runner_test.go +++ b/runner_test.go @@ -190,7 +190,7 @@ func (*RunnerSuite) TestStopAndWaitWorkerWithAbort(c *gc.C) { close(stop) select { case err := <-errc: - c.Assert(errors.Cause(err), gc.Equals, worker.ErrAborted) + c.Assert(errors.Is(err, worker.ErrAborted), jc.IsTrue) case <-time.After(longWait): c.Fatalf("timed out waiting for worker") } @@ -562,7 +562,7 @@ func (*RunnerSuite) TestWorkerWithAbort(c *gc.C) { close(stop) select { case err := <-errc: - c.Assert(errors.Cause(err), gc.Equals, worker.ErrAborted) + c.Assert(errors.Is(err, worker.ErrAborted), jc.IsTrue) case <-time.After(longWait): c.Fatalf("timed out waiting for worker") } @@ -651,7 +651,7 @@ func (*RunnerSuite) TestWorkerWhenRunnerKilledWhileWaiting(c *gc.C) { runner.Kill() select { case err := <-errc: - c.Assert(errors.Cause(err), gc.Equals, worker.ErrDead) + c.Assert(errors.Is(err, worker.ErrDead), jc.IsTrue) case <-time.After(longWait): c.Fatalf("timed out waiting for worker") }