/
limits.go
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/
limits.go
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// Copyright 2021 Authors of Cilium
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package limits
import (
"context"
openapi "github.com/cilium/cilium/pkg/alibabacloud/api"
ipamTypes "github.com/cilium/cilium/pkg/ipam/types"
"github.com/cilium/cilium/pkg/lock"
)
// limits contains limits for adapter count and addresses. The mappings will be
// updated from agent configuration at bootstrap time.
//
// Source: https://www.alibabacloud.com/help/doc-detail/25378.htm
var limits = struct {
lock.RWMutex
m map[string]ipamTypes.Limits
}{
m: map[string]ipamTypes.Limits{},
}
// Update update the limit map
func Update(limitMap map[string]ipamTypes.Limits) {
limits.Lock()
defer limits.Unlock()
for k, v := range limitMap {
limits.m[k] = v
}
}
// Get returns the instance limits of a particular instance type.
func Get(instanceType string) (limit ipamTypes.Limits, ok bool) {
limits.RLock()
limit, ok = limits.m[instanceType]
limits.RUnlock()
return
}
// UpdateFromAPI updates limits for instance
// https://www.alibabacloud.com/help/doc-detail/25620.htm
func UpdateFromAPI(ctx context.Context, ecs *openapi.Client) error {
instanceTypeInfos, err := ecs.GetInstanceTypes(ctx)
if err != nil {
return err
}
limits.Lock()
defer limits.Unlock()
for _, instanceTypeInfo := range instanceTypeInfos {
instanceType := instanceTypeInfo.InstanceTypeId
adapterLimit := instanceTypeInfo.EniQuantity
ipv4PerAdapter := instanceTypeInfo.EniPrivateIpAddressQuantity
ipv6PerAdapter := instanceTypeInfo.EniIpv6AddressQuantity
limits.m[instanceType] = ipamTypes.Limits{
Adapters: adapterLimit,
IPv4: ipv4PerAdapter,
IPv6: ipv6PerAdapter,
}
}
return nil
}