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common.go
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/
common.go
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package controlapi
import (
"regexp"
"strings"
"github.com/docker/swarmkit/api"
"github.com/docker/swarmkit/manager/state/store"
"google.golang.org/grpc"
"google.golang.org/grpc/codes"
)
var isValidName = regexp.MustCompile(`^[a-zA-Z0-9](?:[-_]*[A-Za-z0-9]+)*$`)
func buildFilters(by func(string) store.By, values []string) store.By {
filters := make([]store.By, 0, len(values))
for _, v := range values {
filters = append(filters, by(v))
}
return store.Or(filters...)
}
func filterContains(match string, candidates []string) bool {
if len(candidates) == 0 {
return true
}
for _, c := range candidates {
if c == match {
return true
}
}
return false
}
func filterContainsPrefix(match string, candidates []string) bool {
if len(candidates) == 0 {
return true
}
for _, c := range candidates {
if strings.HasPrefix(match, c) {
return true
}
}
return false
}
func filterMatchLabels(match map[string]string, candidates map[string]string) bool {
if len(candidates) == 0 {
return true
}
for k, v := range candidates {
c, ok := match[k]
if !ok {
return false
}
if v != "" && v != c {
return false
}
}
return true
}
func validateAnnotations(m api.Annotations) error {
if m.Name == "" {
return grpc.Errorf(codes.InvalidArgument, "meta: name must be provided")
} else if !isValidName.MatchString(m.Name) {
// if the name doesn't match the regex
return grpc.Errorf(codes.InvalidArgument, "invalid name, only [a-zA-Z0-9][a-zA-Z0-9-]*[a-zA-Z0-9] are allowed")
}
return nil
}
func validateDriver(driver *api.Driver) error {
if driver == nil {
// It is ok to not specify the driver. We will choose
// a default driver.
return nil
}
if driver.Name == "" {
return grpc.Errorf(codes.InvalidArgument, "driver name: if driver is specified name is required")
}
return nil
}