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b323d571b5
Refactored the driver api so that is aligns well with the design
of endpoint lifecycle becoming decoupled from the container lifecycle.
Introduced go interfaces to obtain address information during CreateEndpoint.
Go interfaces are also used to get data from driver during join.
This sort of deisgn hides the libnetwork specific type details from drivers.
Another adjustment is to provide a list of interfaces during CreateEndpoint. The
goal of this is many-fold:
* To indicate to the driver that IP address has been assigned by some other
entity (like a user wanting to use their own static IP for an endpoint/container)
and asking the driver to honor this. Driver may reject this configuration
and return an error but it may not try to allocate an IP address and override
the passed one.
* To indicate to the driver that IP address has already been allocated once
for this endpoint by an instance of the same driver in some docker host
in the cluster and this is merely a notification about that endpoint and the
allocated resources.
* In case the list of interfaces is empty the driver is required to allocate and
assign IP addresses for this endpoint.
Signed-off-by: Jana Radhakrishnan <mrjana@docker.com>
53 lines
1.3 KiB
Go
53 lines
1.3 KiB
Go
package host
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import (
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"github.com/docker/libnetwork/driverapi"
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"github.com/docker/libnetwork/types"
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)
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const networkType = "host"
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type driver struct{}
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// Init registers a new instance of host driver
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func Init(dc driverapi.DriverCallback) error {
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return dc.RegisterDriver(networkType, &driver{})
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}
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func (d *driver) Config(option map[string]interface{}) error {
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return nil
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}
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func (d *driver) CreateNetwork(id types.UUID, option map[string]interface{}) error {
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return nil
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}
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func (d *driver) DeleteNetwork(nid types.UUID) error {
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return nil
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}
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func (d *driver) CreateEndpoint(nid, eid types.UUID, epInfo driverapi.EndpointInfo, epOptions map[string]interface{}) error {
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return nil
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}
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func (d *driver) DeleteEndpoint(nid, eid types.UUID) error {
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return nil
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}
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func (d *driver) EndpointOperInfo(nid, eid types.UUID) (map[string]interface{}, error) {
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return make(map[string]interface{}, 0), nil
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}
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// Join method is invoked when a Sandbox is attached to an endpoint.
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func (d *driver) Join(nid, eid types.UUID, sboxKey string, jinfo driverapi.JoinInfo, options map[string]interface{}) error {
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return (jinfo.SetHostsPath("/etc/hosts"))
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}
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// Leave method is invoked when a Sandbox detaches from an endpoint.
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func (d *driver) Leave(nid, eid types.UUID) error {
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return nil
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}
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func (d *driver) Type() string {
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return networkType
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}
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