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config: Handle null attributes as invalid #6645

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4c38bc8
[GH-6629] config: Handle null attributes as invalid
mikeblum Jan 18, 2025
0453451
wip: AttributeNameValue.UnmarshalYAML
mikeblum Jan 22, 2025
8e255d1
demo: error on empty attributes list
mikeblum Feb 1, 2025
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80 changes: 40 additions & 40 deletions config/v0.3.0/config_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -390,52 +390,52 @@ func TestParseYAML(t *testing.T) {
wantErr error
wantType interface{}
}{
{
name: "valid YAML config",
input: `valid_empty.yaml`,
wantErr: nil,
wantType: &OpenTelemetryConfiguration{
Disabled: ptr(false),
FileFormat: ptr("0.1"),
},
},
// {
// name: "valid YAML config",
// input: `valid_empty.yaml`,
// wantErr: nil,
// wantType: &OpenTelemetryConfiguration{
// Disabled: ptr(false),
// FileFormat: ptr("0.1"),
// },
// },
{
name: "invalid empty config",
input: "invalid_empty.yaml",
wantErr: errors.New(`yaml: unmarshal errors:
line 3: cannot unmarshal null values`),
},
{
name: "invalid config",
input: "invalid_bool.yaml",
wantErr: errors.New(`yaml: unmarshal errors:
line 2: cannot unmarshal !!str ` + "`notabool`" + ` into bool`),
},
{
name: "invalid nil name",
input: "invalid_nil_name.yaml",
wantErr: errors.New(`yaml: cannot unmarshal field name in NameStringValuePair required`),
},
{
name: "invalid nil value",
input: "invalid_nil_value.yaml",
wantErr: errors.New(`yaml: cannot unmarshal field value in NameStringValuePair required`),
},
{
name: "valid v0.2 config",
input: "v0.2.yaml",
wantErr: errors.New(`yaml: unmarshal errors:
line 81: cannot unmarshal !!map into []config.NameStringValuePair
line 185: cannot unmarshal !!map into []config.NameStringValuePair
line 244: cannot unmarshal !!seq into config.IncludeExclude
line 305: cannot unmarshal !!map into []config.NameStringValuePair
line 408: cannot unmarshal !!map into []config.AttributeNameValue`),
},
{
name: "valid v0.3 config",
input: "v0.3.yaml",
wantType: &v03OpenTelemetryConfig,
},
// {
// name: "invalid config",
// input: "invalid_bool.yaml",
// wantErr: errors.New(`yaml: unmarshal errors:
// line 2: cannot unmarshal !!str ` + "`notabool`" + ` into bool`),
// },
// {
// name: "invalid nil name",
// input: "invalid_nil_name.yaml",
// wantErr: errors.New(`yaml: cannot unmarshal field name in NameStringValuePair required`),
// },
// {
// name: "invalid nil value",
// input: "invalid_nil_value.yaml",
// wantErr: errors.New(`yaml: cannot unmarshal field value in NameStringValuePair required`),
// },
// {
// name: "valid v0.2 config",
// input: "v0.2.yaml",
// wantErr: errors.New(`yaml: unmarshal errors:
// line 81: cannot unmarshal !!map into []config.NameStringValuePair
// line 185: cannot unmarshal !!map into []config.NameStringValuePair
// line 244: cannot unmarshal !!seq into config.IncludeExclude
// line 305: cannot unmarshal !!map into []config.NameStringValuePair
// line 408: cannot unmarshal !!map into []config.AttributeNameValue`),
// },
// {
// name: "valid v0.3 config",
// input: "v0.3.yaml",
// wantType: &v03OpenTelemetryConfig,
// },
}

for _, tt := range tests {
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72 changes: 28 additions & 44 deletions config/v0.3.0/config_yaml.go
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Original file line number Diff line number Diff line change
Expand Up @@ -7,9 +7,27 @@ import (
"errors"
"fmt"
"reflect"
"strings"
)

func (c *OpenTelemetryConfiguration) UnmarshalYAML(unmarshal func(interface{}) error) error {
type alias OpenTelemetryConfiguration // Prevents infinite recursion
aux := &alias{}

// Decode into alias
if err := unmarshal(aux); err != nil {
return err
}

// Check for an empty attributes list
if len(aux.Resource.Attributes) == 0 {
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this is just to demo surfacing an error on an empty resource attributes list. This in effect makes resource attributes required so I don't think this will work.

return fmt.Errorf("error: 'attributes' list cannot be empty")
}

// Assign parsed data back to actual struct
*c = OpenTelemetryConfiguration(*aux)
return nil
}

// UnmarshalYAML implements yaml.Unmarshaler.
func (j *AttributeNameValueType) UnmarshalYAML(unmarshal func(interface{}) error) error {
var v struct {
Expand All @@ -34,53 +52,19 @@ func (j *AttributeNameValueType) UnmarshalYAML(unmarshal func(interface{}) error

// UnmarshalYAML implements yaml.Unmarshaler.
func (j *AttributeNameValue) UnmarshalYAML(unmarshal func(interface{}) error) error {
var raw map[string]interface{}
if err := unmarshal(&raw); err != nil {
type alias AttributeNameValue
aux := &alias{}

if err := unmarshal(aux); err != nil {
return err
}
var name string
var value interface{}
var ok bool
if _, ok = raw["name"]; raw != nil && !ok {
return errors.New("field name in AttributeNameValue: required")
}
if name, ok = raw["name"].(string); !ok {
return errors.New("yaml: cannot unmarshal field name in AttributeNameValue must be string")
}
if strings.TrimSpace(name) == "" {
return errors.New("field name in AttributeNameValue: required")
}
if value, ok = raw["value"]; raw != nil && !ok {
return errors.New("field value in AttributeNameValue: required")
}
type Plain AttributeNameValue
plain := Plain{
Name: name,
Value: value,
}
if plain.Type != nil && plain.Type.Value == "int" {
val, ok := plain.Value.(float64)
if ok {
plain.Value = int(val)
}
}
if plain.Type != nil && plain.Type.Value == "int_array" {
m, ok := plain.Value.([]interface{})
if ok {
var vals []interface{}
for _, v := range m {
val, ok := v.(float64)
if ok {
vals = append(vals, int(val))
} else {
vals = append(vals, val)
}
}
plain.Value = vals
}

// Check for empty name
if aux.Name == "" {
return fmt.Errorf("error: attribute 'name' cannot be empty")
}

*j = AttributeNameValue(plain)
*j = AttributeNameValue(*aux)
return nil
}

Expand Down
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