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distro: panic less often

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Return errors from all distro's New() functions instead of logging and
returning nil. Also, return errors instead of panicking from
NewRegistry() and NewDefaultRegistry().
This commit is contained in:
Lars Karlitski 2020-03-02 23:59:12 +01:00
parent d1965d6268
commit 87e9c39532
19 changed files with 128 additions and 62 deletions
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39
internal/distro/distro.go
View file

@ -3,6 +3,7 @@ package distro
import (
"bufio"
"errors"
"fmt"
"io"
"os"
"strings"
@ -70,41 +71,41 @@ type Registry struct {
distros map[common.Distribution]Distro
}
func NewRegistry(distros ...Distro) *Registry {
func NewRegistry(distros ...Distro) (*Registry, error) {
reg := &Registry{
distros: make(map[common.Distribution]Distro),
}
for _, distro := range distros {
distroTag := distro.Distribution()
if _, exists := reg.distros[distroTag]; exists {
panic("a distro with this name already exists: " + distro.Name())
return nil, fmt.Errorf("NewRegistry: passed two distros with the same name: %s", distro.Name())
}
reg.distros[distroTag] = distro
}
return reg
return reg, nil
}
// Create a new Registry containing all known distros.
func NewDefaultRegistry(confPaths []string) *Registry {
f30 := fedora30.New(confPaths)
if f30 == nil {
panic("Attempt to register Fedora 30 failed")
func NewDefaultRegistry(confPaths []string) (*Registry, error) {
f30, err := fedora30.New(confPaths)
if err != nil {
return nil, fmt.Errorf("error loading fedora30: %v", err)
}
f31 := fedora31.New(confPaths)
if f31 == nil {
panic("Attempt to register Fedora 31 failed")
f31, err := fedora31.New(confPaths)
if err != nil {
return nil, fmt.Errorf("error loading fedora31: %v", err)
}
f32 := fedora32.New(confPaths)
if f32 == nil {
panic("Attempt to register Fedora 32 failed")
f32, err := fedora32.New(confPaths)
if err != nil {
return nil, fmt.Errorf("error loading fedora32: %v", err)
}
el81 := rhel81.New(confPaths)
if el81 == nil {
panic("Attempt to register RHEL 8.1 failed")
el81, err := rhel81.New(confPaths)
if err != nil {
return nil, fmt.Errorf("error loading rhel81: %v", err)
}
el82 := rhel82.New(confPaths)
if el82 == nil {
panic("Attempt to register RHEL 8.2 failed")
el82, err := rhel82.New(confPaths)
if err != nil {
return nil, fmt.Errorf("error loading rhel82: %v", err)
}
return NewRegistry(f30, f31, f32, el81, el82)
}

5
internal/distro/distro_test.go
View file

@ -42,7 +42,10 @@ func TestDistro_Pipeline(t *testing.T) {
continue
}
t.Run(tt.Compose.OutputFormat, func(t *testing.T) {
distros := distro.NewDefaultRegistry([]string{"../.."})
distros, err := distro.NewDefaultRegistry([]string{"../.."})
if err != nil {
t.Fatal(err)
}
d := distros.GetDistro(tt.Compose.Distro)
if d == nil {
t.Errorf("unknown distro: %v", tt.Compose.Distro)

8
internal/distro/fedora30/distro.go
View file

@ -2,6 +2,7 @@ package fedora30
import (
"errors"
"fmt"
"log"
"sort"
"strconv"
@ -46,7 +47,7 @@ type output struct {
const Distro = common.Fedora30
const ModulePlatformID = "platform:f30"
func New(confPaths []string) *Fedora30 {
func New(confPaths []string) (*Fedora30, error) {
const GigaByte = 1024 * 1024 * 1024
r := Fedora30{
@ -65,8 +66,7 @@ func New(confPaths []string) *Fedora30 {
repoMap, err := rpmmd.LoadRepositories(confPaths, r.Name())
if err != nil {
log.Printf("Could not load repository data for %s: %s", r.Name(), err.Error())
return nil
return nil, fmt.Errorf("Could not load repository data for %s: %s", r.Name(), err.Error())
}
repos, exists := repoMap["x86_64"]
@ -307,7 +307,7 @@ func New(confPaths []string) *Fedora30 {
},
}
return &r
return &r, nil
}
func (r *Fedora30) Name() string {

11
internal/distro/fedora30/distro_test.go
View file

@ -19,7 +19,11 @@ func TestListOutputFormats(t *testing.T) {
"vmdk",
}
f30 := fedora30.New([]string{"../../../"})
f30, err := fedora30.New([]string{"../../../"})
if err != nil {
t.Fatal(err)
}
if got := f30.ListOutputFormats(); !reflect.DeepEqual(got, want) {
t.Errorf("ListOutputFormats() = %v, want %v", got, want)
}
@ -92,7 +96,10 @@ func TestFilenameFromType(t *testing.T) {
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
f30 := fedora30.New([]string{"../../../"})
f30, err := fedora30.New([]string{"../../../"})
if err != nil {
t.Fatal(err)
}
got, got1, err := f30.FilenameFromType(tt.args.outputFormat)
if (err != nil) != tt.wantErr {
t.Errorf("FilenameFromType() error = %v, wantErr %v", err, tt.wantErr)

8
internal/distro/fedora31/distro.go
View file

@ -2,6 +2,7 @@ package fedora31
import (
"errors"
"fmt"
"log"
"sort"
"strconv"
@ -46,7 +47,7 @@ type output struct {
const Distro = common.Fedora31
const ModulePlatformID = "platform:f31"
func New(confPaths []string) *Fedora31 {
func New(confPaths []string) (*Fedora31, error) {
const GigaByte = 1024 * 1024 * 1024
r := Fedora31{
@ -65,8 +66,7 @@ func New(confPaths []string) *Fedora31 {
repoMap, err := rpmmd.LoadRepositories(confPaths, r.Name())
if err != nil {
log.Printf("Could not load repository data for %s: %s", r.Name(), err.Error())
return nil
return nil, fmt.Errorf("Could not load repository data for %s: %s", r.Name(), err.Error())
}
repos, exists := repoMap["x86_64"]
@ -307,7 +307,7 @@ func New(confPaths []string) *Fedora31 {
},
}
return &r
return &r, nil
}
func (r *Fedora31) Name() string {

11
internal/distro/fedora31/distro_test.go
View file

@ -19,7 +19,11 @@ func TestListOutputFormats(t *testing.T) {
"vmdk",
}
f31 := fedora31.New([]string{"../../../"})
f31, err := fedora31.New([]string{"../../../"})
if err != nil {
t.Fatal(err)
}
if got := f31.ListOutputFormats(); !reflect.DeepEqual(got, want) {
t.Errorf("ListOutputFormats() = %v, want %v", got, want)
}
@ -92,7 +96,10 @@ func TestFilenameFromType(t *testing.T) {
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
f31 := fedora31.New([]string{"../../../"})
f31, err := fedora31.New([]string{"../../../"})
if err != nil {
t.Fatal(err)
}
got, got1, err := f31.FilenameFromType(tt.args.outputFormat)
if (err != nil) != tt.wantErr {
t.Errorf("FilenameFromType() error = %v, wantErr %v", err, tt.wantErr)

8
internal/distro/fedora32/distro.go
View file

@ -2,6 +2,7 @@ package fedora32
import (
"errors"
"fmt"
"log"
"sort"
"strconv"
@ -46,7 +47,7 @@ type output struct {
const Distro = common.Fedora32
const ModulePlatformID = "platform:f32"
func New(confPaths []string) *Fedora32 {
func New(confPaths []string) (*Fedora32, error) {
const GigaByte = 1024 * 1024 * 1024
r := Fedora32{
@ -65,8 +66,7 @@ func New(confPaths []string) *Fedora32 {
repoMap, err := rpmmd.LoadRepositories(confPaths, r.Name())
if err != nil {
log.Printf("Could not load repository data for %s: %s", r.Name(), err.Error())
return nil
return nil, fmt.Errorf("Could not load repository data for %s: %s", r.Name(), err.Error())
}
repos, exists := repoMap["x86_64"]
@ -307,7 +307,7 @@ func New(confPaths []string) *Fedora32 {
},
}
return &r
return &r, nil
}
func (r *Fedora32) Name() string {

11
internal/distro/fedora32/distro_test.go
View file

@ -19,7 +19,11 @@ func TestListOutputFormats(t *testing.T) {
"vmdk",
}
f32 := fedora32.New([]string{"../../../"})
f32, err := fedora32.New([]string{"../../../"})
if err != nil {
t.Fatal(err)
}
if got := f32.ListOutputFormats(); !reflect.DeepEqual(got, want) {
t.Errorf("ListOutputFormats() = %v, want %v", got, want)
}
@ -92,7 +96,10 @@ func TestFilenameFromType(t *testing.T) {
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
f32 := fedora32.New([]string{"../../../"})
f32, err := fedora32.New([]string{"../../../"})
if err != nil {
t.Fatal(err)
}
got, got1, err := f32.FilenameFromType(tt.args.outputFormat)
if (err != nil) != tt.wantErr {
t.Errorf("FilenameFromType() error = %v, wantErr %v", err, tt.wantErr)

8
internal/distro/rhel81/distro.go
View file

@ -2,6 +2,7 @@ package rhel81
import (
"errors"
"fmt"
"log"
"sort"
"strconv"
@ -47,7 +48,7 @@ type output struct {
const Distro = common.RHEL81
const ModulePlatformID = "platform:el8"
func New(confPaths []string) *RHEL81 {
func New(confPaths []string) (*RHEL81, error) {
const GigaByte = 1024 * 1024 * 1024
r := RHEL81{
@ -70,8 +71,7 @@ func New(confPaths []string) *RHEL81 {
repoMap, err := rpmmd.LoadRepositories(confPaths, r.Name())
if err != nil {
log.Printf("Could not load repository data for %s: %s", r.Name(), err.Error())
return nil
return nil, fmt.Errorf("Could not load repository data for %s: %s", r.Name(), err.Error())
}
repos, exists := repoMap["x86_64"]
@ -446,7 +446,7 @@ func New(confPaths []string) *RHEL81 {
},
}
return &r
return &r, nil
}
func (r *RHEL81) Name() string {

11
internal/distro/rhel81/distro_test.go
View file

@ -19,7 +19,11 @@ func TestListOutputFormats(t *testing.T) {
"vmdk",
}
el81 := rhel81.New([]string{"../../../"})
el81, err := rhel81.New([]string{"../../../"})
if err != nil {
t.Fatal(err)
}
if got := el81.ListOutputFormats(); !reflect.DeepEqual(got, want) {
t.Errorf("ListOutputFormats() = %v, want %v", got, want)
}
@ -92,7 +96,10 @@ func TestFilenameFromType(t *testing.T) {
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
el81 := rhel81.New([]string{"../../../"})
el81, err := rhel81.New([]string{"../../../"})
if err != nil {
t.Fatal(err)
}
got, got1, err := el81.FilenameFromType(tt.args.outputFormat)
if (err != nil) != tt.wantErr {
t.Errorf("FilenameFromType() error = %v, wantErr %v", err, tt.wantErr)

8
internal/distro/rhel82/distro.go
View file

@ -2,6 +2,7 @@ package rhel82
import (
"errors"
"fmt"
"log"
"sort"
"strconv"
@ -47,7 +48,7 @@ type output struct {
const Distro = common.RHEL82
const ModulePlatformID = "platform:el8"
func New(confPaths []string) *RHEL82 {
func New(confPaths []string) (*RHEL82, error) {
const GigaByte = 1024 * 1024 * 1024
r := RHEL82{
@ -70,8 +71,7 @@ func New(confPaths []string) *RHEL82 {
repoMap, err := rpmmd.LoadRepositories(confPaths, r.Name())
if err != nil {
log.Printf("Could not load repository data for %s: %s", r.Name(), err.Error())
return nil
return nil, fmt.Errorf("Could not load repository data for %s: %s", r.Name(), err.Error())
}
repos, exists := repoMap["x86_64"]
@ -446,7 +446,7 @@ func New(confPaths []string) *RHEL82 {
},
}
return &r
return &r, nil
}
func (r *RHEL82) Name() string {

11
internal/distro/rhel82/distro_test.go
View file

@ -19,7 +19,11 @@ func TestListOutputFormats(t *testing.T) {
"vmdk",
}
el82 := rhel82.New([]string{"../../../"})
el82, err := rhel82.New([]string{"../../../"})
if err != nil {
t.Fatal(err)
}
if got := el82.ListOutputFormats(); !reflect.DeepEqual(got, want) {
t.Errorf("ListOutputFormats() = %v, want %v", got, want)
}
@ -92,7 +96,10 @@ func TestFilenameFromType(t *testing.T) {
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
el82 := rhel82.New([]string{"../../../"})
el82, err := rhel82.New([]string{"../../../"})
if err != nil {
t.Fatal(err)
}
got, got1, err := el82.FilenameFromType(tt.args.outputFormat)
if (err != nil) != tt.wantErr {
t.Errorf("FilenameFromType() error = %v, wantErr %v", err, tt.wantErr)