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compat.go
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// Copyright (c) 2016 Tigera, Inc. All rights reserved.
//
// 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 compat
import (
"encoding/json"
goerrors "errors"
log "github.com/sirupsen/logrus"
"github.com/projectcalico/libcalico-go/lib/backend/api"
"github.com/projectcalico/libcalico-go/lib/backend/model"
"github.com/projectcalico/libcalico-go/lib/errors"
"github.com/projectcalico/libcalico-go/lib/net"
"github.com/projectcalico/libcalico-go/lib/numorstring"
)
type ModelAdaptor struct {
client api.Client
}
var _ api.Client = (*ModelAdaptor)(nil)
func NewAdaptor(c api.Client) *ModelAdaptor {
return &ModelAdaptor{client: c}
}
func (c *ModelAdaptor) EnsureInitialized() error {
return c.client.EnsureInitialized()
}
func (c *ModelAdaptor) EnsureCalicoNodeInitialized(node string) error {
return c.client.EnsureCalicoNodeInitialized(node)
}
// Create an entry in the datastore. This errors if the entry already exists.
func (c *ModelAdaptor) Create(d *model.KVPair) (*model.KVPair, error) {
var err error
switch k := d.Key.(type) {
case model.ProfileKey:
t, l, r := ToTagsLabelsRules(d)
if t, err = c.client.Create(t); err != nil {
return nil, err
} else if _, err := c.client.Create(l); err != nil {
return nil, err
} else if _, err := c.client.Create(r); err != nil {
return nil, err
} else {
d.Revision = t.Revision
return d, nil
}
case model.NodeKey:
p, o := toNodeComponents(d)
if p, err = c.client.Create(p); err != nil {
return nil, err
}
if err = c.applyOrDeleteSubcomponents(o); err != nil {
return nil, err
}
d.Revision = p.Revision
return d, nil
case model.BlockKey:
if err = validateBlockValue(d); err != nil {
return nil, err
}
b, err := c.client.Create(d)
if err != nil {
return nil, err
}
d.Revision = b.Revision
return d, nil
case model.GlobalBGPConfigKey:
nd := toDatastoreGlobalBGPConfig(*d)
b, err := c.client.Create(nd)
if err != nil {
return nil, errors.UpdateErrorIdentifier(err, k)
}
d.Revision = b.Revision
return d, nil
default:
return c.client.Create(d)
}
}
// Update an existing entry in the datastore. This errors if the entry does
// not exist.
func (c *ModelAdaptor) Update(d *model.KVPair) (*model.KVPair, error) {
var err error
switch d.Key.(type) {
case model.ProfileKey:
t, l, r := ToTagsLabelsRules(d)
if t, err = c.client.Update(t); err != nil {
return nil, err
} else if _, err := c.client.Apply(l); err != nil {
return nil, err
} else if _, err := c.client.Apply(r); err != nil {
return nil, err
} else {
d.Revision = t.Revision
return d, nil
}
case model.NodeKey:
p, o := toNodeComponents(d)
if p, err = c.client.Update(p); err != nil {
return nil, err
}
if err = c.applyOrDeleteSubcomponents(o); err != nil {
return nil, err
}
d.Revision = p.Revision
return d, nil
case model.BlockKey:
if err = validateBlockValue(d); err != nil {
return nil, err
}
b, err := c.client.Update(d)
if err != nil {
return nil, err
}
d.Revision = b.Revision
return d, nil
case model.GlobalBGPConfigKey:
nd := toDatastoreGlobalBGPConfig(*d)
b, err := c.client.Update(nd)
if err != nil {
return nil, errors.UpdateErrorIdentifier(err, d.Key)
}
d.Revision = b.Revision
return d, nil
default:
return c.client.Update(d)
}
}
// Set an existing entry in the datastore. This ignores whether an entry already
// exists.
func (c *ModelAdaptor) Apply(d *model.KVPair) (*model.KVPair, error) {
var err error
switch d.Key.(type) {
case model.ProfileKey:
t, l, r := ToTagsLabelsRules(d)
if t, err = c.client.Apply(t); err != nil {
return nil, err
} else if _, err := c.client.Apply(l); err != nil {
return nil, err
} else if _, err := c.client.Apply(r); err != nil {
return nil, errors.UpdateErrorIdentifier(err, d.Key)
} else {
d.Revision = t.Revision
return d, nil
}
case model.NodeKey:
p, o := toNodeComponents(d)
if p, err = c.client.Apply(p); err != nil {
return nil, err
}
if err = c.applyOrDeleteSubcomponents(o); err != nil {
return nil, err
}
d.Revision = p.Revision
return d, nil
case model.BlockKey:
if err = validateBlockValue(d); err != nil {
return nil, err
}
b, err := c.client.Apply(d)
if err != nil {
return nil, err
}
d.Revision = b.Revision
return d, nil
case model.GlobalBGPConfigKey:
nd := toDatastoreGlobalBGPConfig(*d)
b, err := c.client.Apply(nd)
if err != nil {
return nil, errors.UpdateErrorIdentifier(err, d.Key)
}
d.Revision = b.Revision
return d, nil
default:
return c.client.Apply(d)
}
}
// Delete an entry in the datastore. This errors if the entry does not exists.
func (c *ModelAdaptor) Delete(d *model.KVPair) error {
var err error
switch d.Key.(type) {
case model.NodeKey:
p, o := toNodeDeleteComponents(d)
if err = c.applyOrDeleteSubcomponents(o); err != nil {
return err
}
if err = c.client.Delete(p); err != nil {
return err
}
return nil
case model.GlobalBGPConfigKey:
nd := toDatastoreGlobalBGPConfig(*d)
err := c.client.Delete(nd)
return errors.UpdateErrorIdentifier(err, d.Key)
default:
return c.client.Delete(d)
}
}
// Get an entry from the datastore. This errors if the entry does not exist.
func (c *ModelAdaptor) Get(k model.Key) (*model.KVPair, error) {
switch kt := k.(type) {
case model.ProfileKey:
return c.getProfile(k)
case model.NodeKey:
return c.getNode(kt)
case model.BlockKey:
return c.getBlock(k)
case model.GlobalBGPConfigKey:
nk := toDatastoreGlobalBGPConfigKey(kt)
if kvp, err := c.client.Get(nk); err != nil {
return nil, errors.UpdateErrorIdentifier(err, k)
} else {
return fromDatastoreGlobalBGPConfig(*kvp), nil
}
default:
return c.client.Get(k)
}
}
// List entries in the datastore. This may return an empty list of there are
// no entries matching the request in the ListInterface.
func (c *ModelAdaptor) List(l model.ListInterface) ([]*model.KVPair, error) {
switch lt := l.(type) {
case model.NodeListOptions:
return c.listNodes(lt)
case model.BlockListOptions:
return c.listBlock(lt)
case model.GlobalBGPConfigListOptions:
nl := toDatastoreGlobalBGPConfigList(lt)
if kvps, err := c.client.List(nl); err != nil {
return nil, errors.UpdateErrorIdentifier(err, l)
} else {
for i, kvp := range kvps {
kvps[i] = fromDatastoreGlobalBGPConfig(*kvp)
}
return kvps, nil
}
default:
return c.client.List(l)
}
}
func (c *ModelAdaptor) Syncer(callbacks api.SyncerCallbacks) api.Syncer {
return c.client.Syncer(callbacks)
}
// getProfile gets the composite profile by getting the individual components
// and joining the results together.
func (c *ModelAdaptor) getProfile(k model.Key) (*model.KVPair, error) {
var t, l, r *model.KVPair
var err error
pk := k.(model.ProfileKey)
if t, err = c.client.Get(model.ProfileTagsKey{pk}); err != nil {
return nil, err
}
d := model.KVPair{
Key: k,
Value: &model.Profile{
Tags: t.Value.([]string),
},
Revision: t.Revision,
}
p := d.Value.(*model.Profile)
if l, err = c.client.Get(model.ProfileLabelsKey{pk}); err == nil {
p.Labels = l.Value.(map[string]string)
}
if r, err = c.client.Get(model.ProfileRulesKey{pk}); err == nil {
p.Rules = *r.Value.(*model.ProfileRules)
}
return &d, nil
}
// getBlock gets KVPair for Block. It gets the block value first,
// then checks for `Affinity` field first, then `HostAffinity` as a backup.
// For more details see: https://github.com/projectcalico/libcalico-go/issues/226
func (c *ModelAdaptor) getBlock(k model.Key) (*model.KVPair, error) {
bk := k.(model.BlockKey)
v, err := c.client.Get(model.BlockKey{CIDR: bk.CIDR})
if err != nil {
return nil, err
}
// Make sure Affinity field has a proper value,
// and map the value to Affinity if the deprecated HostAffinity field is used
// by calling ensureBlockAffinity, and update the KVPair to return.
return ensureBlockAffinity(v), nil
}
// getNode gets the composite node by getting the individual components
// and joining the results together.
func (c *ModelAdaptor) getNode(nk model.NodeKey) (*model.KVPair, error) {
var err error
// Fill in the Metadata specific part of the node configuration. At the
// moment, there is nothing to fill in.
if _, err = c.client.Get(model.HostMetadataKey{nk.Hostname}); err != nil {
return nil, err
}
nv := model.Node{}
err = c.getNodeSubcomponents(nk, &nv)
if err != nil {
return nil, err
}
return &model.KVPair{Key: nk, Value: &nv}, nil
}
// validateBlockValue validates the AllocationBlock fields (specifically Affinity) to
// make sure the deprecated HostAffinity field is not used.
func validateBlockValue(kvp *model.KVPair) error {
if kvp.Value.(*model.AllocationBlock).HostAffinity != nil {
return goerrors.New("AllocationBlock.HostAffinity is deprecated, please use Affinity instead.")
}
return nil
}
// listNodes lists the composite node resources by listing the primary node
// object and then getting the remaining components through additional queries.
// Note that enumeration of the primary component is horribly inefficient
// because of the way we do our list queries - we'll enumerate all endpoints on
// host as well!
func (c *ModelAdaptor) listNodes(l model.NodeListOptions) ([]*model.KVPair, error) {
hml := model.HostMetadataListOptions{Hostname: l.Hostname}
hmr, err := c.client.List(hml)
if err != nil {
return nil, err
}
results := make([]*model.KVPair, len(hmr))
for idx, hmkv := range hmr {
hmk := hmkv.Key.(model.HostMetadataKey)
// Fill in the metadata part of the node - at the moment there is
// nothing to fill in.
nk := model.NodeKey{Hostname: hmk.Hostname}
nv := model.Node{}
err = c.getNodeSubcomponents(nk, &nv)
if err != nil {
return nil, err
}
results[idx] = &model.KVPair{Key: nk, Value: &nv}
}
return results, nil
}
// listBlock returns list of KVPairs for Block, includes making sure
// backwards compatiblity. See getBlock for more details.
func (c *ModelAdaptor) listBlock(l model.BlockListOptions) ([]*model.KVPair, error) {
// Get a list of block KVPairs.
blockList, err := c.client.List(l)
if err != nil {
return nil, err
}
// Create an empty slice of KVPair.
results := make([]*model.KVPair, len(blockList))
// Go through the list to make sure Affinity field has a proper value,
// and maps the value to Affinity if the deprecated HostAffinity field is used
// by calling ensureBlockAffinity, and populate the KVPair slice to return.
for i, bkv := range blockList {
results[i] = ensureBlockAffinity(bkv)
}
return results, nil
}
// ensureBlockAffinity ensures Affinity field has a proper value,
// and maps the value to Affinity if the deprecated HostAffinity field is used.
func ensureBlockAffinity(kvp *model.KVPair) *model.KVPair {
val := kvp.Value.(*model.AllocationBlock)
// Check for `Affinity` field first (this is to make sure we're
// compatible with Python version etcd data-model).
if val.Affinity == nil && val.HostAffinity != nil {
// Convert HostAffinity=hostname into Affinity=host:hostname format.
hostAffinityStr := "host:" + *val.HostAffinity
val.Affinity = &hostAffinityStr
// Set AllocationBlock.HostAffinity to nil so it's never non-nil for the clients.
val.HostAffinity = nil
}
return &model.KVPair{Key: kvp.Key, Value: val, Revision: kvp.Revision, TTL: kvp.TTL}
}
// Get the node sub components and fill in the details in the supplied node
// struct.
func (c *ModelAdaptor) getNodeSubcomponents(nk model.NodeKey, nv *model.Node) error {
var component *model.KVPair
var err error
var strval string
// Fill in the Metadata specific part of the node configuration.
if component, err = c.client.Get(model.NodeBGPConfigKey{Nodename: nk.Hostname, Name: "ip_addr_v4"}); err == nil {
strval = component.Value.(string)
if strval != "" {
nv.BGPIPv4Addr = &net.IP{}
err = nv.BGPIPv4Addr.UnmarshalText([]byte(strval))
if err != nil {
log.WithError(err).Warning("Error unmarshalling IPv4")
nv.BGPIPv4Addr = nil
}
}
} else if _, ok := err.(errors.ErrorResourceDoesNotExist); !ok {
return err
}
if component, err = c.client.Get(model.NodeBGPConfigKey{Nodename: nk.Hostname, Name: "network_v4"}); err == nil {
strval = component.Value.(string)
if strval != "" {
_, nv.BGPIPv4Net, err = net.ParseCIDR(strval)
if err != nil {
log.WithError(err).Warning("Error unmarshalling IPv4Net")
nv.BGPIPv4Net = nil
}
}
} else if _, ok := err.(errors.ErrorResourceDoesNotExist); !ok {
return err
}
if component, err = c.client.Get(model.NodeBGPConfigKey{Nodename: nk.Hostname, Name: "ip_addr_v6"}); err == nil {
strval = component.Value.(string)
if strval != "" {
nv.BGPIPv6Addr = &net.IP{}
err = nv.BGPIPv6Addr.UnmarshalText([]byte(strval))
if err != nil {
log.WithError(err).Warning("Error unmarshalling IPv6")
nv.BGPIPv6Addr = nil
}
}
} else if _, ok := err.(errors.ErrorResourceDoesNotExist); !ok {
return err
}
if component, err = c.client.Get(model.NodeBGPConfigKey{Nodename: nk.Hostname, Name: "network_v6"}); err == nil {
strval = component.Value.(string)
if strval != "" {
_, nv.BGPIPv6Net, err = net.ParseCIDR(strval)
if err != nil {
log.WithError(err).Warning("Error unmarshalling IPv6Net")
nv.BGPIPv6Net = nil
}
}
} else if _, ok := err.(errors.ErrorResourceDoesNotExist); !ok {
return err
}
if component, err = c.client.Get(model.NodeBGPConfigKey{Nodename: nk.Hostname, Name: "as_num"}); err == nil {
strval = component.Value.(string)
if strval != "" {
asn, err := numorstring.ASNumberFromString(strval)
if err != nil {
log.WithError(err).Warning("Error unmarshalling AS Number")
} else {
nv.BGPASNumber = &asn
}
}
} else if _, ok := err.(errors.ErrorResourceDoesNotExist); !ok {
return err
}
if component, err := c.client.Get(model.OrchRefKey{Hostname: nk.Hostname}); err == nil {
nv.OrchRefs = component.Value.([]model.OrchRef)
}
return nil
}
// applyOrDeleteSubcomponents applies the configuration if the value is non-nil
// or deletes the entry if the value is nil.
func (c *ModelAdaptor) applyOrDeleteSubcomponents(components []*model.KVPair) error {
for _, component := range components {
// If there is a value, apply it to either create or update. Otherwise
// delete the entry, ignoring error indicating the entry does not exist.
if component.Value != nil {
if _, err := c.client.Apply(component); err != nil {
return err
}
} else if err := c.client.Delete(component); err != nil {
if _, ok := err.(errors.ErrorResourceDoesNotExist); !ok {
return err
}
}
}
return nil
}
// ToTagsLabelsRules converts a Profile KVPair to separate KVPair types for Keys,
// Labels and Rules. These separate KVPairs are used to write three separate objects
// that make up a single profile.
func ToTagsLabelsRules(d *model.KVPair) (t, l, r *model.KVPair) {
p := d.Value.(*model.Profile)
pk := d.Key.(model.ProfileKey)
t = &model.KVPair{
Key: model.ProfileTagsKey{pk},
Value: p.Tags,
}
l = &model.KVPair{
Key: model.ProfileLabelsKey{pk},
Value: p.Labels,
}
r = &model.KVPair{
Key: model.ProfileRulesKey{pk},
Value: &p.Rules,
}
return t, l, r
}
// toNodeComponents converts a Node KVPair to separate KVPair types that make up the
// Node. This includes:
// - The host metadata (the primary component)
// - The host IPv4 address (used by Felix to filter IPIP traffic)
// - The BGP AS Number
// - The BGP IPv4 address
// - The BGP IPv6 address
//
// A nil value is used to indicate that the entry should be deleted rather than
// configured.
func toNodeComponents(d *model.KVPair) (primary *model.KVPair, optional []*model.KVPair) {
n := d.Value.(*model.Node)
nk := d.Key.(model.NodeKey)
primary = &model.KVPair{
Key: model.HostMetadataKey{nk.Hostname},
Value: &model.HostMetadata{},
Revision: d.Revision,
}
// The calico/node image always expects the BGP IP keys to be present
// when running BGP even if they are not specified (the value in that
// case should be a blank string). Felix on the other hand deals
// with values not existing.
ipv4Str := ""
if n.BGPIPv4Addr != nil {
ipv4Str = n.BGPIPv4Addr.String()
}
ipv6Str := ""
if n.BGPIPv6Addr != nil {
ipv6Str = n.BGPIPv6Addr.String()
}
// Add the BGP IPv4 and IPv6 values - these are always present.
optional = []*model.KVPair{
&model.KVPair{
Key: model.NodeBGPConfigKey{
Nodename: nk.Hostname,
Name: "ip_addr_v4",
},
Value: ipv4Str,
},
&model.KVPair{
Key: model.NodeBGPConfigKey{
Nodename: nk.Hostname,
Name: "ip_addr_v6",
},
Value: ipv6Str,
},
}
// Now add the entries that may or may not exist: the Felix ipv4
// address and the host ASN. If either config is not specified, set
// the value to be nil to indicate to our default processing to delete
// the entry rather than set it.
if n.BGPIPv4Addr != nil {
optional = append(optional, &model.KVPair{
Key: model.HostIPKey{nk.Hostname},
Value: n.BGPIPv4Addr,
})
} else {
optional = append(optional, &model.KVPair{
Key: model.HostIPKey{nk.Hostname},
})
}
if n.BGPASNumber != nil {
optional = append(optional, &model.KVPair{
Key: model.NodeBGPConfigKey{
Nodename: nk.Hostname,
Name: "as_num",
},
Value: n.BGPASNumber.String(),
})
} else {
optional = append(optional, &model.KVPair{
Key: model.NodeBGPConfigKey{
Nodename: nk.Hostname,
Name: "as_num",
},
})
}
if n.BGPIPv4Net != nil {
optional = append(optional, &model.KVPair{
Key: model.NodeBGPConfigKey{
Nodename: nk.Hostname,
Name: "network_v4",
},
Value: n.BGPIPv4Net.String(),
})
} else {
optional = append(optional, &model.KVPair{
Key: model.NodeBGPConfigKey{
Nodename: nk.Hostname,
Name: "network_v4",
},
})
}
if n.BGPIPv6Net != nil {
optional = append(optional, &model.KVPair{
Key: model.NodeBGPConfigKey{
Nodename: nk.Hostname,
Name: "network_v6",
},
Value: n.BGPIPv6Net.String(),
})
} else {
optional = append(optional, &model.KVPair{
Key: model.NodeBGPConfigKey{
Nodename: nk.Hostname,
Name: "network_v6",
},
})
}
if len(n.OrchRefs) > 0 {
optional = append(optional, &model.KVPair{
Key: model.OrchRefKey{Hostname: nk.Hostname},
Value: n.OrchRefs,
})
}
return primary, optional
}
// toNodeDeleteComponents is similar to function toNodeComponents, but returns nil
// interface values which the applyOrDeleteSubcomponents method will treat as a delete.
func toNodeDeleteComponents(d *model.KVPair) (primary *model.KVPair, optional []*model.KVPair) {
nk := d.Key.(model.NodeKey)
primary = &model.KVPair{
Key: model.HostMetadataKey{nk.Hostname},
Revision: d.Revision,
}
optional = []*model.KVPair{
&model.KVPair{
Key: model.HostIPKey{nk.Hostname},
},
&model.KVPair{
Key: model.NodeBGPConfigKey{
Nodename: nk.Hostname,
Name: "ip_addr_v4",
},
},
&model.KVPair{
Key: model.NodeBGPConfigKey{
Nodename: nk.Hostname,
Name: "ip_addr_v6",
},
},
&model.KVPair{
Key: model.NodeBGPConfigKey{
Nodename: nk.Hostname,
Name: "as_num",
},
},
&model.KVPair{
Key: model.NodeBGPConfigKey{
Nodename: nk.Hostname,
Name: "network_v4",
},
},
&model.KVPair{
Key: model.NodeBGPConfigKey{
Nodename: nk.Hostname,
Name: "network_v6",
},
},
&model.KVPair{
Key: model.OrchRefKey{
Hostname: nk.Hostname,
},
},
}
return primary, optional
}
// toDatastoreGlobalBGPConfigKey modifies the Global BGP Config key to the one required by
// the datastore (for back-compatibility).
func toDatastoreGlobalBGPConfigKey(key model.GlobalBGPConfigKey) model.GlobalBGPConfigKey {
switch key.Name {
case "AsNumber":
key = model.GlobalBGPConfigKey{Name: "as_num"}
case "LogLevel":
key = model.GlobalBGPConfigKey{Name: "loglevel"}
case "NodeMeshEnabled":
key = model.GlobalBGPConfigKey{Name: "node_mesh"}
}
return key
}
// toDatastoreGlobalBGPConfigList modifies the Global BGP Config List interface to the one required by
// the datastore (for back-compatibility with what is expected in teh etcdv2 datastore driver).
func toDatastoreGlobalBGPConfigList(l model.GlobalBGPConfigListOptions) model.GlobalBGPConfigListOptions {
switch l.Name {
case "AsNumber":
l = model.GlobalBGPConfigListOptions{Name: "as_num"}
case "LogLevel":
l = model.GlobalBGPConfigListOptions{Name: "loglevel"}
case "NodeMeshEnabled":
l = model.GlobalBGPConfigListOptions{Name: "node_mesh"}
}
return l
}
// fromDatastoreGlobalBGPKey modifies the Global BGP Config key from the one required by
// the datastore (for back-compatibility with what is expected in teh etcdv2 datastore driver).
func fromDatastoreGlobalBGPKey(key model.GlobalBGPConfigKey) model.GlobalBGPConfigKey {
switch key.Name {
case "as_num":
key = model.GlobalBGPConfigKey{Name: "AsNumber"}
case "loglevel":
key = model.GlobalBGPConfigKey{Name: "LogLevel"}
case "node_mesh":
key = model.GlobalBGPConfigKey{Name: "NodeMeshEnabled"}
}
return key
}
// toDatastoreGlobalBGPConfig modifies the Global BGP Config KVPair to the format required in the
// datastore (for back-compatibility with what is expected in teh etcdv2 datastore driver).
func toDatastoreGlobalBGPConfig(d model.KVPair) *model.KVPair {
// Copy the KVPair, so we aren't modifying the original.
modifiedKey := toDatastoreGlobalBGPConfigKey(d.Key.(model.GlobalBGPConfigKey))
d.Key = modifiedKey
switch modifiedKey.Name {
case "node_mesh":
// In the datastore the node_mesh parm is expected to be a JSON object with an
// enabled field, but the new value just uses a boolean string.
if d.Value != nil {
enabled := d.Value.(string) == "true"
v, _ := json.Marshal(nodeToNodeMesh{Enabled: enabled})
d.Value = string(v)
}
}
return &d
}
// fromDatastoreGlobalBGPConfig modifies the Global BGP Config KVPair from the format required in the
// datastore (for back-compatibility with what is expected in teh etcdv2 datastore driver).
func fromDatastoreGlobalBGPConfig(d model.KVPair) *model.KVPair {
modifiedKey := fromDatastoreGlobalBGPKey(d.Key.(model.GlobalBGPConfigKey))
d.Key = modifiedKey
switch modifiedKey.Name {
case "NodeMeshEnabled":
// In the datastore the node_mesh parm is expected to be a JSON object with an
// enabled field, but the new value just uses a boolean string.
if d.Value != nil {
var n nodeToNodeMesh
if err := json.Unmarshal([]byte(d.Value.(string)), &n); err != nil {
log.Info("Error parsing node to node mesh")
v, _ := json.Marshal(false)
d.Value = string(v)
} else {
log.Info("Returning configured node to node mesh")
v, _ := json.Marshal(n.Enabled)
d.Value = string(v)
}
}
}
return &d
}
// nodeToNodeMesh is a struct containing whether node-to-node mesh is enabled. It can be
// JSON marshalled into the correct structure that is understood by the Calico BGP component.
type nodeToNodeMesh struct {
Enabled bool `json:"enabled"`
}