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feat: latency-based failover (#119)

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This commit is contained in:
mzz
2023-07-10 19:44:56 +08:00
committed by GitHub
parent 36dfdbac8b
commit 11d2ea945f
17 changed files with 257 additions and 64 deletions
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1
pkg/config_parser/config_parser.go
View File

@ -7,7 +7,6 @@ package config_parser
import (
"fmt"
"github.com/antlr/antlr4/runtime/Go/antlr/v4"
"github.com/daeuniverse/dae-config-dist/go/dae_config"
)

2
pkg/config_parser/error.go
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@ -7,10 +7,10 @@ package config_parser
import (
"fmt"
"github.com/antlr/antlr4/runtime/Go/antlr/v4"
"reflect"
"strings"
"github.com/antlr/antlr4/runtime/Go/antlr/v4"
"github.com/sirupsen/logrus"
)

4
pkg/config_parser/section.go
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@ -107,9 +107,13 @@ type Param struct {
// Either Val or AndFunctions is empty.
Val string
AndFunctions []*Function
// Annotation is optional
Annotation []*Param
}
func (p *Param) String(compact bool, quoteVal bool) string {
// FIXME: annotation
var quote func(string) string
if quoteVal {
quote = strconv.Quote

27
pkg/config_parser/walker.go
View File

@ -9,10 +9,10 @@ package config_parser
import (
"fmt"
"github.com/antlr/antlr4/runtime/Go/antlr/v4"
"strconv"
"strings"
"github.com/antlr/antlr4/runtime/Go/antlr/v4"
"github.com/daeuniverse/dae-config-dist/go/dae_config"
"github.com/sirupsen/logrus"
)
@ -164,11 +164,12 @@ func (w *Walker) parseDeclaration(ctx dae_config.IDeclarationContext) *Param {
return nil
}
key := children[0].(*antlr.TerminalNodeImpl).GetText()
var param *Param
switch valueCtx := children[2].(type) {
case *dae_config.LiteralExpressionContext:
parser := literalExpressionParser{}
parser.Parse(valueCtx)
return &Param{
param = &Param{
Key: key,
Val: strings.Join(parser.literals, ","), // TODO: Do we just check grammar and trim spaces and put it back?
}
@ -177,7 +178,7 @@ func (w *Walker) parseDeclaration(ctx dae_config.IDeclarationContext) *Param {
if andFunctions == nil {
return nil
}
return &Param{
param = &Param{
Key: key,
AndFunctions: andFunctions,
}
@ -185,6 +186,26 @@ func (w *Walker) parseDeclaration(ctx dae_config.IDeclarationContext) *Param {
w.ReportError(valueCtx, ErrorType_Unsupported)
return nil
}
if len(children) >= 4 {
// Parse annotations.
optAnnotation, ok := children[3].(*dae_config.OptAnnotationContext)
if !ok {
w.ReportError(optAnnotation, ErrorType_Unsupported, "ERROR: is not optAnnotation type")
return nil
}
children = optAnnotation.GetChildren()
if len(children) >= 3 {
optParameterList := children[1]
nonEmptyParamList := optParameterList
children = nonEmptyParamList.GetChildren()
if len(children) == 0 {
w.ReportError(optAnnotation, ErrorType_Unsupported, "empty parameter list")
return nil
}
param.Annotation = w.parseNonEmptyParamList(children[0].(*dae_config.NonEmptyParameterListContext))
}
}
return param
}
func (w *Walker) parseFunctionPrototypeExpression(ctx dae_config.IFunctionPrototypeExpressionContext, verifier functionVerifier) (andFunctions []*Function) {