// ListByFilter looks up the hosts containers with the specified filters and
// returns a list of container matching it, or an error.
func ListByFilter(ctx context.Context, clientInstance client.ContainerAPIClient, containerFilters ...map[string][]string) ([]types.Container, error) {
filterArgs := filters.NewArgs()
// FIXME(vdemeester) I don't like 3 for loops >_<
for _, filter := range containerFilters {
for key, filterValue := range filter {
for _, value := range filterValue {
filterArgs.Add(key, value)
}
}
}
return clientInstance.ContainerList(ctx, types.ContainerListOptions{
All: true,
Filter: filterArgs,
})
}
// NewNamer returns a namer that returns names based on the specified project and
// service name and an inner counter, e.g. project_service_1, project_service_2…
func NewNamer(ctx context.Context, client client.ContainerAPIClient, project, service string, oneOff bool) (Namer, error) {
namer := &defaultNamer{
project: project,
service: service,
oneOff: oneOff,
}
filter := filters.NewArgs()
filter.Add("label", fmt.Sprintf("%s=%s", labels.PROJECT.Str(), project))
filter.Add("label", fmt.Sprintf("%s=%s", labels.SERVICE.Str(), service))
if oneOff {
filter.Add("label", fmt.Sprintf("%s=%s", labels.ONEOFF.Str(), "True"))
} else {
filter.Add("label", fmt.Sprintf("%s=%s", labels.ONEOFF.Str(), "False"))
}
containers, err := client.ContainerList(ctx, types.ContainerListOptions{
All: true,
Filter: filter,
})
if err != nil {
return nil, err
}
maxNumber := 0
for _, container := range containers {
number, err := strconv.Atoi(container.Labels[labels.NUMBER.Str()])
if err != nil {
return nil, err
}
if number > maxNumber {
maxNumber = number
}
}
namer.currentNumber = maxNumber + 1
return namer, nil
}