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fs: re-implement DumpMode with Bits

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This almost 100% backwards compatible. The only difference being that
in the rc options/get output DumpMode will be output as strings
instead of integers. This is a lot more convenient for the user. They
still accept integer inputs though so the fallout from this should be
minimal.
This commit is contained in:
Nick Craig-Wood 2023-10-03 12:56:17 +01:00
parent 75745fcb21
commit 55d10f4d25
2 changed files with 21 additions and 82 deletions
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95
fs/dump.go
View File

@ -1,12 +1,7 @@
package fs
import (
"fmt"
"strings"
)
// DumpFlags describes the Dump options in force
type DumpFlags int
type DumpFlags = Bits[dumpChoices]
// DumpFlags definitions
const (
@ -20,80 +15,24 @@ const (
DumpOpenFiles
)
var dumpFlags = []struct {
flag DumpFlags
name string
}{
{DumpHeaders, "headers"},
{DumpBodies, "bodies"},
{DumpRequests, "requests"},
{DumpResponses, "responses"},
{DumpAuth, "auth"},
{DumpFilters, "filters"},
{DumpGoRoutines, "goroutines"},
{DumpOpenFiles, "openfiles"},
type dumpChoices struct{}
func (dumpChoices) Choices() []BitsChoicesInfo {
return []BitsChoicesInfo{
{uint64(DumpHeaders), "headers"},
{uint64(DumpBodies), "bodies"},
{uint64(DumpRequests), "requests"},
{uint64(DumpResponses), "responses"},
{uint64(DumpAuth), "auth"},
{uint64(DumpFilters), "filters"},
{uint64(DumpGoRoutines), "goroutines"},
{uint64(DumpOpenFiles), "openfiles"},
}
}
// DumpFlagsList is a list of dump flags used in the help
var DumpFlagsList string
func init() {
// calculate the dump flags list
var out []string
for _, info := range dumpFlags {
out = append(out, info.name)
}
DumpFlagsList = strings.Join(out, ",")
}
// String turns a DumpFlags into a string
func (f DumpFlags) String() string {
var out []string
for _, info := range dumpFlags {
if f&info.flag != 0 {
out = append(out, info.name)
f &^= info.flag
}
}
if f != 0 {
out = append(out, fmt.Sprintf("Unknown-0x%X", int(f)))
}
return strings.Join(out, ",")
}
// Set a DumpFlags as a comma separated list of flags
func (f *DumpFlags) Set(s string) error {
var flags DumpFlags
parts := strings.Split(s, ",")
for _, part := range parts {
found := false
part = strings.ToLower(strings.TrimSpace(part))
if part == "" {
continue
}
for _, info := range dumpFlags {
if part == info.name {
found = true
flags |= info.flag
}
}
if !found {
return fmt.Errorf("unknown dump flag %q", part)
}
}
*f = flags
return nil
}
// Type of the value
func (f DumpFlags) Type() string {
func (dumpChoices) Type() string {
return "DumpFlags"
}
// UnmarshalJSON makes sure the value can be parsed as a string or integer in JSON
func (f *DumpFlags) UnmarshalJSON(in []byte) error {
return UnmarshalJSONFlag(in, f, func(i int64) error {
*f = (DumpFlags)(i)
return nil
})
}
// DumpFlagsList is a list of dump flags used in the help
var DumpFlagsList = DumpHeaders.Help()

8
fs/dump_test.go
View File

@ -33,9 +33,9 @@ func TestDumpFlagsSet(t *testing.T) {
{"bodies,headers,auth", DumpBodies | DumpHeaders | DumpAuth, ""},
{"bodies,headers,auth", DumpBodies | DumpHeaders | DumpAuth, ""},
{"headers,bodies,requests,responses,auth,filters", DumpHeaders | DumpBodies | DumpRequests | DumpResponses | DumpAuth | DumpFilters, ""},
{"headers,bodies,unknown,auth", 0, "unknown dump flag \"unknown\""},
{"headers,bodies,unknown,auth", 0, "invalid choice \"unknown\""},
} {
f := DumpFlags(-1)
f := DumpFlags(0xffffffffffffffff)
initial := f
err := f.Set(test.in)
if err != nil {
@ -72,12 +72,12 @@ func TestDumpFlagsUnmarshallJSON(t *testing.T) {
{`"bodies,headers,auth"`, DumpBodies | DumpHeaders | DumpAuth, ""},
{`"bodies,headers,auth"`, DumpBodies | DumpHeaders | DumpAuth, ""},
{`"headers,bodies,requests,responses,auth,filters"`, DumpHeaders | DumpBodies | DumpRequests | DumpResponses | DumpAuth | DumpFilters, ""},
{`"headers,bodies,unknown,auth"`, 0, "unknown dump flag \"unknown\""},
{`"headers,bodies,unknown,auth"`, 0, "invalid choice \"unknown\""},
{`0`, DumpFlags(0), ""},
{strconv.Itoa(int(DumpBodies)), DumpBodies, ""},
{strconv.Itoa(int(DumpBodies | DumpHeaders | DumpAuth)), DumpBodies | DumpHeaders | DumpAuth, ""},
} {
f := DumpFlags(-1)
f := DumpFlags(0xffffffffffffffff)
initial := f
err := json.Unmarshal([]byte(test.in), &f)
if err != nil {