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Add warning log for unknown config fields

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Add error log for failure to parse toml

Signed-off-by: Derek McGowan <derek@mcg.dev>
This commit is contained in:
Derek McGowan 2023-09-24 16:59:27 -07:00
parent b5615caf11
commit 650148313c
No known key found for this signature in database
GPG Key ID: F58C5D0A4405ACDB
5 changed files with 48 additions and 14 deletions
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2
cmd/containerd/command/config.go
View File

@ -91,7 +91,7 @@ var configCommand = cli.Command{
Usage: "See the output of the final main config with imported in subconfig files",
Action: func(context *cli.Context) error {
config := defaultConfig()
if err := srvconfig.LoadConfig(context.GlobalString("config"), config); err != nil && !os.IsNotExist(err) {
if err := srvconfig.LoadConfig(gocontext.Background(), context.GlobalString("config"), config); err != nil && !os.IsNotExist(err) {
return err
}

2
cmd/containerd/command/main.go
View File

@ -121,7 +121,7 @@ can be used and modified as necessary as a custom configuration.`
configPath := context.GlobalString("config")
_, err := os.Stat(configPath)
if !os.IsNotExist(err) || context.GlobalIsSet("config") {
if err := srvconfig.LoadConfig(configPath, config); err != nil {
if err := srvconfig.LoadConfig(ctx, configPath, config); err != nil {
return err
}
}

2
integration/client/restart_monitor_test.go
View File

@ -60,7 +60,7 @@ func newDaemonWithConfig(t *testing.T, configTOML string) (*Client, *daemon, fun
t.Fatal(err)
}
if err := srvconfig.LoadConfig(configTOMLFile, &configTOMLDecoded); err != nil {
if err := srvconfig.LoadConfig(context.TODO(), configTOMLFile, &configTOMLDecoded); err != nil {
t.Fatal(err)
}

43
services/server/config/config.go
View File

@ -17,6 +17,7 @@
package config
import (
"context"
"errors"
"fmt"
"io"
@ -29,6 +30,7 @@ import (
"github.com/containerd/containerd/errdefs"
"github.com/containerd/containerd/plugin"
"github.com/containerd/log"
)
// NOTE: Any new map fields added also need to be handled in mergeConfig.
@ -196,7 +198,7 @@ func (c *Config) Decode(p *plugin.Registration) (interface{}, error) {
}
// LoadConfig loads the containerd server config from the provided path
func LoadConfig(path string, out *Config) error {
func LoadConfig(ctx context.Context, path string, out *Config) error {
if out == nil {
return fmt.Errorf("argument out must not be nil: %w", errdefs.ErrInvalidArgument)
}
@ -214,7 +216,7 @@ func LoadConfig(path string, out *Config) error {
continue
}
config, err := loadConfigFile(path)
config, err := loadConfigFile(ctx, path)
if err != nil {
return err
}
@ -246,7 +248,7 @@ func LoadConfig(path string, out *Config) error {
}
// loadConfigFile decodes a TOML file at the given path
func loadConfigFile(path string) (*Config, error) {
func loadConfigFile(ctx context.Context, path string) (*Config, error) {
config := &Config{}
f, err := os.Open(path)
@ -255,11 +257,42 @@ func loadConfigFile(path string) (*Config, error) {
}
defer f.Close()
// TODO: Add DisallowUnknownFields, requires better testing and bubbling errors
if err := toml.NewDecoder(f).Decode(config); err != nil {
if err := toml.NewDecoder(f).DisallowUnknownFields().Decode(config); err != nil {
var serr *toml.StrictMissingError
if errors.As(err, &serr) {
for _, derr := range serr.Errors {
row, col := derr.Position()
log.G(ctx).WithFields(log.Fields{
"file": path,
"row": row,
"column": col,
"key": strings.Join(derr.Key(), " "),
}).WithError(err).Warn("Ignoring unknown key in TOML")
}
// Try decoding again with unknown fields
config = &Config{}
if _, seekerr := f.Seek(0, io.SeekStart); seekerr != nil {
return nil, fmt.Errorf("unable to seek file to start %w: failed to unmarshal TOML with unknown fields: %w", seekerr, err)
}
err = toml.NewDecoder(f).Decode(config)
}
if err != nil {
var derr *toml.DecodeError
if errors.As(err, &derr) {
row, column := derr.Position()
log.G(ctx).WithFields(log.Fields{
"file": path,
"row": row,
"column": column,
}).WithError(err).Error("Failure unmarshaling TOML")
return nil, fmt.Errorf("failed to unmarshal TOML at row %d column %d: %w", row, column, err)
}
return nil, fmt.Errorf("failed to unmarshal TOML: %w", err)
}
}
return config, nil
}

11
services/server/config/config_test.go
View File

@ -17,6 +17,7 @@
package config
import (
"context"
"os"
"path/filepath"
"sort"
@ -115,7 +116,7 @@ root = "/var/lib/containerd"
assert.NoError(t, err)
var out Config
err = LoadConfig(path, &out)
err = LoadConfig(context.Background(), path, &out)
assert.NoError(t, err)
assert.Equal(t, 2, out.Version)
assert.Equal(t, "/var/lib/containerd", out.Root)
@ -147,7 +148,7 @@ disabled_plugins = ["io.containerd.v1.xyz"]
assert.NoError(t, err)
var out Config
err = LoadConfig(filepath.Join(tempDir, "data1.toml"), &out)
err = LoadConfig(context.Background(), filepath.Join(tempDir, "data1.toml"), &out)
assert.NoError(t, err)
assert.Equal(t, 2, out.Version)
@ -175,7 +176,7 @@ imports = ["data1.toml", "data2.toml"]
assert.NoError(t, err)
var out Config
err = LoadConfig(filepath.Join(tempDir, "data1.toml"), &out)
err = LoadConfig(context.Background(), filepath.Join(tempDir, "data1.toml"), &out)
assert.NoError(t, err)
assert.Equal(t, 2, out.Version)
@ -203,7 +204,7 @@ version = 2
assert.NoError(t, err)
var out Config
err = LoadConfig(path, &out)
err = LoadConfig(context.Background(), path, &out)
assert.NoError(t, err)
pluginConfig := map[string]interface{}{}
@ -225,6 +226,6 @@ func TestDecodePluginInV1Config(t *testing.T) {
assert.NoError(t, err)
var out Config
err = LoadConfig(path, &out)
err = LoadConfig(context.Background(), path, &out)
assert.ErrorContains(t, err, "config version `1` is no longer supported")
}