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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package ec2
import (
"context"
"errors"
"net/http"
"testing"
"time"
"github.com/aws/aws-sdk-go/aws/awserr"
"github.com/aws/aws-sdk-go/aws/ec2metadata"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"go.opentelemetry.io/otel/attribute"
"go.opentelemetry.io/otel/sdk/resource"
semconv "go.opentelemetry.io/otel/semconv/v1.26.0"
)
func TestAWS_Detect(t *testing.T) {
type fields struct {
Client Client
}
type want struct {
Error string
Partial bool
Resource *resource.Resource
}
usWestInst := func() (ec2metadata.EC2InstanceIdentityDocument, error) {
// Example from https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/instance-identity-documents.html
doc := ec2metadata.EC2InstanceIdentityDocument{
MarketplaceProductCodes: []string{"1abc2defghijklm3nopqrs4tu"},
AvailabilityZone: "us-west-2b",
PrivateIP: "10.158.112.84",
Version: "2017-09-30",
Region: "us-west-2",
InstanceID: "i-1234567890abcdef0",
InstanceType: "t2.micro",
AccountID: "123456789012",
PendingTime: time.Date(2016, time.November, 19, 16, 32, 11, 0, time.UTC),
ImageID: "ami-5fb8c835",
Architecture: "x86_64",
}
return doc, nil
}
usWestIDLabels := []attribute.KeyValue{
semconv.CloudProviderAWS,
semconv.CloudPlatformAWSEC2,
semconv.CloudRegion("us-west-2"),
semconv.CloudAvailabilityZone("us-west-2b"),
semconv.CloudAccountID("123456789012"),
semconv.HostID("i-1234567890abcdef0"),
semconv.HostImageID("ami-5fb8c835"),
semconv.HostType("t2.micro"),
}
testTable := map[string]struct {
Fields fields
Want want
}{
"Unavailable": {
Fields: fields{Client: &clientMock{}},
},
"Instance ID Error": {
Fields: fields{
Client: &clientMock{available: true, idDoc: func() (ec2metadata.EC2InstanceIdentityDocument, error) {
return ec2metadata.EC2InstanceIdentityDocument{}, errors.New("id not available")
}},
},
Want: want{Error: "id not available"},
},
"Hostname Not Found": {
Fields: fields{
Client: &clientMock{available: true, idDoc: usWestInst, metadata: map[string]meta{}},
},
Want: want{Resource: resource.NewWithAttributes(semconv.SchemaURL, usWestIDLabels...)},
},
"Hostname Response Error": {
Fields: fields{
Client: &clientMock{
available: true,
idDoc: usWestInst,
metadata: map[string]meta{
"hostname": {err: awserr.NewRequestFailure(awserr.New("EC2MetadataError", "failed to make EC2Metadata request", errors.New("response error")), http.StatusInternalServerError, "test-request")},
},
},
},
Want: want{
Error: `partial resource: ["hostname": 500 EC2MetadataError]`,
Partial: true,
Resource: resource.NewWithAttributes(semconv.SchemaURL, usWestIDLabels...),
},
},
"Hostname General Error": {
Fields: fields{
Client: &clientMock{
available: true,
idDoc: usWestInst,
metadata: map[string]meta{
"hostname": {err: errors.New("unknown error")},
},
},
},
Want: want{
Error: `partial resource: ["hostname": unknown error]`,
Partial: true,
Resource: resource.NewWithAttributes(semconv.SchemaURL, usWestIDLabels...),
},
},
"All Available": {
Fields: fields{
Client: &clientMock{
available: true,
idDoc: usWestInst,
metadata: map[string]meta{
"hostname": {value: "ip-12-34-56-78.us-west-2.compute.internal"},
},
},
},
Want: want{Resource: resource.NewWithAttributes(
semconv.SchemaURL,
semconv.CloudProviderAWS,
semconv.CloudPlatformAWSEC2,
semconv.CloudRegion("us-west-2"),
semconv.CloudAvailabilityZone("us-west-2b"),
semconv.CloudAccountID("123456789012"),
semconv.HostID("i-1234567890abcdef0"),
semconv.HostImageID("ami-5fb8c835"),
semconv.HostName("ip-12-34-56-78.us-west-2.compute.internal"),
semconv.HostType("t2.micro"),
)},
},
}
for name, tt := range testTable {
tt := tt
t.Run(name, func(t *testing.T) {
t.Parallel()
ec2ResourceDetector := NewResourceDetector(WithClient(tt.Fields.Client))
r, err := ec2ResourceDetector.Detect(context.Background())
assert.Equal(t, tt.Want.Resource, r, "Resource")
if tt.Want.Error != "" {
require.EqualError(t, err, tt.Want.Error, "Error")
assert.Equal(t, tt.Want.Partial, errors.Is(err, resource.ErrPartialResource), "Partial Resource")
return
}
require.NoError(t, err, "Error")
})
}
}
type clientMock struct {
available bool
idDoc func() (ec2metadata.EC2InstanceIdentityDocument, error)
metadata map[string]meta
}
type meta struct {
err error
value string
}
func (c *clientMock) Available() bool {
return c.available
}
func (c *clientMock) GetInstanceIdentityDocument() (ec2metadata.EC2InstanceIdentityDocument, error) {
return c.idDoc()
}
func (c *clientMock) GetMetadata(p string) (string, error) {
v, ok := c.metadata[p]
if !ok {
return "", awserr.NewRequestFailure(awserr.New("EC2MetadataError", "failed to make EC2Metadata request", errors.New("response error")), http.StatusNotFound, "test-request")
}
return v.value, v.err
}
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