Unleash/unleash-client-go

package constraints

import (
    "github.com/Masterminds/semver/v3"
    "github.com/Unleash/unleash-client-go/v3/api"
    "github.com/Unleash/unleash-client-go/v3/context"
)

func operatorSemverEq(ctx *context.Context, constraint api.Constraint) (bool, error) {
    return operatorSemver(ctx, constraint, func(context *semver.Version, constraint *semver.Version) bool {
        return context.Equal(constraint)
    })
}

func operatorSemverLt(ctx *context.Context, constraint api.Constraint) (bool, error) {
    return operatorSemver(ctx, constraint, func(context *semver.Version, constraint *semver.Version) bool {
        return context.LessThan(constraint)
    })
}

func operatorSemverGt(ctx *context.Context, constraint api.Constraint) (bool, error) {
    return operatorSemver(ctx, constraint, func(context *semver.Version, constraint *semver.Version) bool {
        return context.GreaterThan(constraint)
    })
}

func operatorSemver(
    ctx *context.Context,
    constraint api.Constraint,
    check func(context *semver.Version, constraint *semver.Version) bool,
) (bool, error) {
    contextValue := ctx.Field(constraint.ContextName)
    contextParsed, contextErr := semver.StrictNewVersion(contextValue)
    constraintParsed, constraintErr := semver.StrictNewVersion(constraint.Value)

    if contextErr != nil {
        return false, contextErr
    }

    if constraintErr != nil {
        return false, constraintErr
    }

    return check(contextParsed, constraintParsed), nil
}