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2080122f38
On my laptop, I'm currently seeing a huge number of intermittent test failures all related to WaitForLeader returning after the test node has become a leader, but before it has actually finished starting up, in particular, performing the serf/Raft reconciliation. Waiting for the index to become nonzero makes the tests pass reliably, by also blocking until the new leader has started committing state.
45 lines
838 B
Go
45 lines
838 B
Go
package testutil
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import (
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"github.com/hashicorp/consul/consul/structs"
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"testing"
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"time"
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)
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type testFn func() (bool, error)
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type errorFn func(error)
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func WaitForResult(test testFn, error errorFn) {
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retries := 1000
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for retries > 0 {
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time.Sleep(10 * time.Millisecond)
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retries--
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success, err := test()
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if success {
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return
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}
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if retries == 0 {
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error(err)
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}
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}
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}
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type rpcFn func(string, interface{}, interface{}) error
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func WaitForLeader(t *testing.T, rpc rpcFn, dc string) structs.IndexedNodes {
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var out structs.IndexedNodes
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WaitForResult(func() (bool, error) {
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args := &structs.RegisterRequest{
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Datacenter: dc,
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}
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err := rpc("Catalog.ListNodes", args, &out)
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return out.QueryMeta.KnownLeader && out.Index > 0, err
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}, func(err error) {
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t.Fatalf("failed to find leader: %v", err)
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})
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return out
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}
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