nurse/protocols/redis/get.go

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package redis
import (
"context"
"log/slog"
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"github.com/redis/go-redis/v9"
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"code.icb4dc0.de/prskr/nurse/internal/retry"
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"code.icb4dc0.de/prskr/nurse/check"
"code.icb4dc0.de/prskr/nurse/config"
"code.icb4dc0.de/prskr/nurse/grammar"
"code.icb4dc0.de/prskr/nurse/validation"
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)
var _ check.SystemChecker = (*GetCheck)(nil)
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type GetCheck struct {
redis.UniversalClient
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validators validation.Validator[redis.Cmder]
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Key string
}
func (g *GetCheck) Execute(ctx check.Context) error {
logger := slog.Default().With(
slog.String("check", "redis.GET"),
slog.String("key", g.Key),
)
return retry.Retry(ctx, ctx.AttemptCount(), ctx.AttemptTimeout(), func(ctx context.Context, attempt int) error {
logger.Debug("Execute check", slog.Int("attempt", attempt))
cmd := g.Get(ctx, g.Key)
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if err := cmd.Err(); err != nil {
return err
}
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return g.validators.Validate(cmd)
})
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}
func (g *GetCheck) UnmarshalCheck(c grammar.Check, lookup config.ServerLookup) error {
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const serverAndKeyArgsNumber = 2
inst := c.Initiator
if err := grammar.ValidateParameterCount(inst.Params, serverAndKeyArgsNumber); err != nil {
return err
}
var err error
if g.UniversalClient, err = clientFromParam(inst.Params[0], lookup); err != nil {
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return err
}
if g.Key, err = inst.Params[1].AsString(); err != nil {
return err
}
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if g.validators, err = registry.ValidatorsForFilters(c.Validators); err != nil {
return err
}
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return nil
}