go-emlid/reach/client/protocol/v2/protocol.go

package v2

import (
	"context"

	"forge.cadoles.com/cadoles/go-emlid/reach/client/logger"
	"forge.cadoles.com/cadoles/go-emlid/reach/client/protocol"
	"github.com/Masterminds/semver/v3"
	"github.com/pkg/errors"
)

const Identifier protocol.Identifier = "v2"

const compatibleVersionConstraint = ">= 32"

type Protocol struct {
	logger logger.Logger
	dial   protocol.DialFunc
}

// Available implements protocol.Protocol.
func (p *Protocol) Available(ctx context.Context, addr string) (bool, error) {
	ops := p.Operations(addr).(*Operations)

	info, err := ops.GetInfo(ctx)
	if err != nil {
		return false, errors.WithStack(err)
	}

	versionConstraint, err := semver.NewConstraint(compatibleVersionConstraint)
	if err != nil {
		return false, errors.WithStack(err)
	}

	version, err := semver.NewVersion(info.Reachview.Version)
	if err != nil {
		return false, errors.WithStack(err)
	}

	if !versionConstraint.Check(version) {
		return false, nil
	}

	return true, nil
}

// Identifier implements protocol.Protocol.
func (p *Protocol) Identifier() protocol.Identifier {
	return Identifier
}

// Operations implements protocol.Protocol.
func (p *Protocol) Operations(addr string) protocol.Operations {
	return &Operations{
		dial:   p.dial,
		addr:   addr,
		logger: p.logger,
	}
}

var _ protocol.Protocol = &Protocol{}