chore: drop dependency on github.com/pkg/errors (#301)

This functionality is mostly available in the standard library (apart
from stack traces), and it makes more sense to use the standard library
equivalents rather to have a dependency.

domain/service_metadata.go

@@ -2,9 +2,8 @@ package domain
 
 import (
  "encoding/json"
+ "fmt"
  "reflect"
-
- "github.com/pkg/errors"
 )
 
 type ServiceMetadata struct {
@@ -23,7 +22,7 @@ func (sm ServiceMetadata) MarshalJSON() ([]byte, error) {
 
  b, err := json.Marshal(Alias(sm))
  if err != nil {
- return []byte{}, errors.Wrap(err, "unmarshallable content in AdditionalMetadata")
+ return nil, fmt.Errorf("unmarshallable content in AdditionalMetadata: %w", err)
  }
 
  var m map[string]interface{}

domain/service_plan_metadata.go

@@ -2,10 +2,9 @@ package domain
 
 import (
  "encoding/json"
+ "fmt"
  "reflect"
  "strings"
-
- "github.com/pkg/errors"
 )
 
 type ServicePlanMetadata struct {
@@ -51,7 +50,7 @@ func (spm ServicePlanMetadata) MarshalJSON() ([]byte, error) {
 
  b, err := json.Marshal(Alias(spm))
  if err != nil {
- return []byte{}, errors.Wrap(err, "unmarshallable content in AdditionalMetadata")
+ return nil, fmt.Errorf("unmarshallable content in AdditionalMetadata: %w", err)
  }
 
  var m map[string]interface{}

go.mod

@@ -9,7 +9,6 @@ require (
  github.com/onsi/ginkgo/v2 v2.17.1
  github.com/onsi/gomega v1.33.0
  github.com/pborman/uuid v1.2.1
- github.com/pkg/errors v0.9.1
  honnef.co/go/tools v0.4.7
 )
 

go.sum

@@ -39,8 +39,6 @@ github.com/onsi/gomega v1.33.0 h1:snPCflnZrpMsy94p4lXVEkHo12lmPnc3vY5XBbreexE=
 github.com/onsi/gomega v1.33.0/go.mod h1:+925n5YtiFsLzzafLUHzVMBpvvRAzrydIBiSIxjX3wY=
 github.com/pborman/uuid v1.2.1 h1:+ZZIw58t/ozdjRaXh/3awHfmWRbzYxJoAdNJxe/3pvw=
 github.com/pborman/uuid v1.2.1/go.mod h1:X/NO0urCmaxf9VXbdlT7C2Yzkj2IKimNn4k+gtPdI/k=
-github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
-github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/sclevine/spec v1.4.0 h1:z/Q9idDcay5m5irkZ28M7PtQM4aOISzOpj4bUPkDee8=

handlers/catalog_test.go

@@ -2,13 +2,12 @@ package handlers_test
 
 import (
  "context"
+ "errors"
  "log/slog"
  "net/http"
 
  . "github.com/onsi/ginkgo/v2"
  . "github.com/onsi/gomega"
- "github.com/pkg/errors"
-
  "github.com/pivotal-cf/brokerapi/v11/domain"
  "github.com/pivotal-cf/brokerapi/v11/domain/apiresponses"
  brokerFakes "github.com/pivotal-cf/brokerapi/v11/fakes"

handlers/last_binding_operation_test.go

@@ -3,6 +3,7 @@ package handlers_test
 import (
  "context"
  "encoding/json"
+ "errors"
  "fmt"
  "log/slog"
  "net/http"
@@ -17,7 +18,6 @@ import (
  "github.com/pivotal-cf/brokerapi/v11/handlers"
  "github.com/pivotal-cf/brokerapi/v11/handlers/fakes"
  "github.com/pivotal-cf/brokerapi/v11/middlewares"
- "github.com/pkg/errors"
 )
 
 var _ = Describe("LastBindingOperation", func() {