Golang DeleteDockNet Examples

Example #1

File: endpointGroup.go Project: jojimt/netplugin

// DeleteEndpointGroup handles endpoint group deletes
func DeleteEndpointGroup(tenantName, groupName string) error {
	// Get the state driver
	stateDriver, err := utils.GetStateDriver()
	if err != nil {
		return err
	}

	epgKey := mastercfg.GetEndpointGroupKey(groupName, tenantName)
	epgCfg := &mastercfg.EndpointGroupState{}
	epgCfg.StateDriver = stateDriver
	err = epgCfg.Read(epgKey)
	if err != nil {
		log.Errorf("error reading EPG key %s. Error: %s", epgKey, err)
		return err
	}

	if epgCfg.EpCount != 0 {
		return core.Errorf("Error: EPG %s has active endpoints", groupName)
	}

	// Delete the endpoint group state
	gstate.GlobalMutex.Lock()
	defer gstate.GlobalMutex.Unlock()
	gCfg := gstate.Cfg{}
	gCfg.StateDriver = stateDriver
	err = gCfg.Read(epgCfg.TenantName)
	if err != nil {
		log.Errorf("error reading tenant cfg state. Error: %s", err)
		return err
	}

	// if aci mode we allocate per-epg vlan. free it here.
	aciMode, aErr := IsAciConfigured()
	if aErr != nil {
		return aErr
	}

	if aciMode {
		if epgCfg.PktTagType == "vlan" {
			err = gCfg.FreeVLAN(uint(epgCfg.PktTag))
			if err != nil {
				return err
			}
			log.Debugf("Freed vlan %v\n", epgCfg.PktTag)
		}
	}

	// Delete endpoint group
	err = epgCfg.Clear()
	if err != nil {
		log.Errorf("error writing epGroup config. Error: %v", err)
		return err
	}

	if GetClusterMode() == "docker" {
		return docknet.DeleteDockNet(epgCfg.TenantName, epgCfg.NetworkName, epgCfg.GroupName)
	}
	return nil
}

Example #2

File: endpointGroup.go Project: vvb/netplugin

// DeleteEndpointGroup handles endpoint group deletes
func DeleteEndpointGroup(epgID int) error {
	// Get the state driver
	stateDriver, err := utils.GetStateDriver()
	if err != nil {
		return err
	}

	epgCfg := &mastercfg.EndpointGroupState{}
	epgCfg.StateDriver = stateDriver
	err = epgCfg.Read(strconv.Itoa(epgID))
	if err != nil {
		log.Errorf("EpGroup %v is not configured", epgID)
		return err
	}

	gCfg := gstate.Cfg{}
	gCfg.StateDriver = stateDriver
	err = gCfg.Read(epgCfg.Tenant)
	if err != nil {
		log.Errorf("error reading tenant cfg state. Error: %s", err)
		return err
	}

	// if aci mode we allocate per-epg vlan. free it here.
	aciMode, aErr := IsAciConfigured()
	if aErr != nil {
		return aErr
	}

	if aciMode {
		if epgCfg.PktTagType == "vlan" {
			err = gCfg.FreeVLAN(uint(epgCfg.PktTag))
			if err != nil {
				return err
			}
			log.Debugf("Freed vlan %v\n", epgCfg.PktTag)
		}
	}

	// Delete endpoint group
	err = epgCfg.Clear()
	if err != nil {
		log.Errorf("error writing epGroup config. Error: %v", err)
		return err
	}

	return docknet.DeleteDockNet(epgCfg.Tenant, epgCfg.NetworkName, epgCfg.Name)
}

Example #3

File: network.go Project: abhinandanpb/netplugin

// DeleteNetworkID removes a network by ID.
func DeleteNetworkID(stateDriver core.StateDriver, netID string) error {
	nwCfg := &mastercfg.CfgNetworkState{}
	nwCfg.StateDriver = stateDriver
	err := nwCfg.Read(netID)
	if err != nil {
		log.Errorf("network %s is not operational", netID)
		return err
	}

	aci, _ := IsAciConfigured()
	if aci {
		// Skip docker network deletion for ACI fabric mode.
		return nil
	}

	if nwCfg.NwType != "infra" {
		// For Infra nw, endpoint delete initiated by netplugin
		// Check if there are any active endpoints
		if hasActiveEndpoints(nwCfg) {
			return core.Errorf("Error: Network has active endpoints")
		}

		if IsDNSEnabled() {
			// detach Dns container
			err = detachServiceContainer(nwCfg.Tenant, nwCfg.NetworkName)
			if err != nil {
				log.Errorf("Error detaching service container. Err: %v", err)
			}
		}

		if GetClusterMode() == "docker" {
			// Delete the docker network
			err = docknet.DeleteDockNet(nwCfg.Tenant, nwCfg.NetworkName, "")
			if err != nil {
				log.Errorf("Error deleting network %s. Err: %v", netID, err)
				// DeleteDockNet will fail when network has active endpoints.
				// No damage is done yet. It is safe to fail.
				// We do not have to call attachServiceContainer here,
				// as detachServiceContainer detaches only when there are no
				// endpoints remaining.
				return err
			}
		}
	}

	gCfg := &gstate.Cfg{}
	gCfg.StateDriver = stateDriver
	err = gCfg.Read("")
	if err != nil {
		log.Errorf("error reading tenant info for %q. Error: %s", nwCfg.Tenant, err)
		return err
	}

	// Free resource associated with the network
	err = freeNetworkResources(stateDriver, nwCfg, gCfg)
	if err != nil {
		// Error while freeing up vlan/vxlan/subnet/gateway resources
		// This can only happen because of defects in code
		// No need of any corrective handling here
		return err
	}

	err = nwCfg.Clear()
	if err != nil {
		log.Errorf("error writing nw config. Error: %s", err)
		return err
	}

	return err
}