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check and log errors more often in deferred cleanup calls, and log remote-induced errors at lower priority

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We normally check errors for all operations. But for some cleanup calls, eg
"defer file.Close()", we didn't. Now we also check and log most of those.
Partially because those errors can point to some mishandling or unexpected code
paths (eg file unexpected already closed). And in part to make it easier to use
"errcheck" to find the real missing error checks, there is too much noise now.

The log.Check function can now be used unconditionally for checking and logging
about errors. It adjusts the log level if the error is caused by a network
connection being closed, or a context is canceled or its deadline reached, or a
socket deadline is reached.
This commit is contained in:
Mechiel Lukkien
2025-03-24 13:46:08 +01:00
parent 15a8ce8c0b
commit a2c79e25c1
38 changed files with 337 additions and 161 deletions
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6
autotls/autotls_test.go
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@ -25,7 +25,7 @@ func TestAutotls(t *testing.T) {
getPrivateKey := func(host string, keyType autocert.KeyType) (crypto.Signer, error) {
return nil, fmt.Errorf("not used")
}
m, err := Load("test", "../testdata/autotls", "mox@localhost", "https://localhost/", "", nil, getPrivateKey, shutdown)
m, err := Load(log, "test", "../testdata/autotls", "mox@localhost", "https://localhost/", "", nil, getPrivateKey, shutdown)
if err != nil {
t.Fatalf("load manager: %v", err)
}
@ -82,7 +82,7 @@ func TestAutotls(t *testing.T) {
key0 := m.Manager.Client.Key
m, err = Load("test", "../testdata/autotls", "mox@localhost", "https://localhost/", "", nil, getPrivateKey, shutdown)
m, err = Load(log, "test", "../testdata/autotls", "mox@localhost", "https://localhost/", "", nil, getPrivateKey, shutdown)
if err != nil {
t.Fatalf("load manager again: %v", err)
}
@ -95,7 +95,7 @@ func TestAutotls(t *testing.T) {
t.Fatalf("hostpolicy, got err %v, expected no error", err)
}
m2, err := Load("test2", "../testdata/autotls", "mox@localhost", "https://localhost/", "", nil, nil, shutdown)
m2, err := Load(log, "test2", "../testdata/autotls", "mox@localhost", "https://localhost/", "", nil, nil, shutdown)
if err != nil {
t.Fatalf("load another manager: %v", err)
}