mirror of https://github.com/status-im/consul.git
963 lines
27 KiB
Go
963 lines
27 KiB
Go
// Copyright (c) HashiCorp, Inc.
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// SPDX-License-Identifier: BUSL-1.1
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package topology
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import (
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crand "crypto/rand"
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"encoding/hex"
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"errors"
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"fmt"
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"reflect"
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"regexp"
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"sort"
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"github.com/google/go-cmp/cmp"
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pbauth "github.com/hashicorp/consul/proto-public/pbauth/v2beta1"
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pbcatalog "github.com/hashicorp/consul/proto-public/pbcatalog/v2beta1"
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pbmesh "github.com/hashicorp/consul/proto-public/pbmesh/v2beta1"
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"github.com/hashicorp/consul/proto-public/pbresource"
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"github.com/hashicorp/go-hclog"
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"golang.org/x/exp/maps"
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"github.com/hashicorp/consul/testing/deployer/util"
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)
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const DockerPrefix = "cslc" // ConSuLCluster
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func Compile(logger hclog.Logger, raw *Config) (*Topology, error) {
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return compile(logger, raw, nil)
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}
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func Recompile(logger hclog.Logger, raw *Config, prev *Topology) (*Topology, error) {
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if prev == nil {
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return nil, errors.New("missing previous topology")
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}
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return compile(logger, raw, prev)
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}
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func compile(logger hclog.Logger, raw *Config, prev *Topology) (*Topology, error) {
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var id string
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if prev == nil {
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var err error
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id, err = newTopologyID()
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if err != nil {
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return nil, err
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}
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} else {
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id = prev.ID
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}
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images := DefaultImages().OverrideWith(raw.Images)
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if images.Consul != "" {
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return nil, fmt.Errorf("topology.images.consul cannot be set at this level")
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}
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if len(raw.Networks) == 0 {
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return nil, fmt.Errorf("topology.networks is empty")
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}
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networks := make(map[string]*Network)
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for _, net := range raw.Networks {
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if net.DockerName != "" {
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return nil, fmt.Errorf("network %q should not specify DockerName", net.Name)
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}
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if !IsValidLabel(net.Name) {
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return nil, fmt.Errorf("network name is not valid: %s", net.Name)
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}
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if _, exists := networks[net.Name]; exists {
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return nil, fmt.Errorf("cannot have two networks with the same name %q", net.Name)
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}
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switch net.Type {
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case "":
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net.Type = "lan"
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case "wan", "lan":
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default:
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return nil, fmt.Errorf("network %q has unknown type %q", net.Name, net.Type)
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}
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networks[net.Name] = net
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net.DockerName = DockerPrefix + "-" + net.Name + "-" + id
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}
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if len(raw.Clusters) == 0 {
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return nil, fmt.Errorf("topology.clusters is empty")
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}
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var (
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clusters = make(map[string]*Cluster)
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nextIndex int // use a global index so any shared networks work properly with assignments
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)
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foundPeerNames := make(map[string]map[string]struct{})
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for _, c := range raw.Clusters {
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if c.Name == "" {
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return nil, fmt.Errorf("cluster has no name")
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}
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foundPeerNames[c.Name] = make(map[string]struct{})
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if !IsValidLabel(c.Name) {
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return nil, fmt.Errorf("cluster name is not valid: %s", c.Name)
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}
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if _, exists := clusters[c.Name]; exists {
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return nil, fmt.Errorf("cannot have two clusters with the same name %q; use unique names and override the Datacenter field if that's what you want", c.Name)
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}
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if c.Datacenter == "" {
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c.Datacenter = c.Name
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} else {
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if !IsValidLabel(c.Datacenter) {
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return nil, fmt.Errorf("datacenter name is not valid: %s", c.Datacenter)
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}
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}
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clusters[c.Name] = c
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if c.NetworkName == "" {
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c.NetworkName = c.Name
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}
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c.Images = images.OverrideWith(c.Images).ChooseConsul(c.Enterprise)
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if _, ok := networks[c.NetworkName]; !ok {
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return nil, fmt.Errorf("cluster %q uses network name %q that does not exist", c.Name, c.NetworkName)
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}
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if len(c.Nodes) == 0 {
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return nil, fmt.Errorf("cluster %q has no nodes", c.Name)
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}
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if len(c.Services) == 0 { // always initialize this regardless of v2-ness, because we might late-enable it below
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c.Services = make(map[ID]*pbcatalog.Service)
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}
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var implicitV2Services bool
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if len(c.Services) > 0 {
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c.EnableV2 = true
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for name, svc := range c.Services {
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if svc.Workloads != nil {
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return nil, fmt.Errorf("the workloads field for v2 service %q is not user settable", name)
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}
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}
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} else {
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implicitV2Services = true
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}
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if c.TLSVolumeName != "" {
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return nil, fmt.Errorf("user cannot specify the TLSVolumeName field")
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}
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tenancies := make(map[string]map[string]struct{})
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addTenancy := func(partition, namespace string) {
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partition = PartitionOrDefault(partition)
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namespace = NamespaceOrDefault(namespace)
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m, ok := tenancies[partition]
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if !ok {
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m = make(map[string]struct{})
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tenancies[partition] = m
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}
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m[namespace] = struct{}{}
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}
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for _, ap := range c.Partitions {
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addTenancy(ap.Name, "default")
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for _, ns := range ap.Namespaces {
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addTenancy(ap.Name, ns)
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}
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}
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for _, ce := range c.InitialConfigEntries {
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addTenancy(ce.GetPartition(), ce.GetNamespace())
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}
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if len(c.InitialResources) > 0 {
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c.EnableV2 = true
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}
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for _, res := range c.InitialResources {
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if res.Id.Tenancy == nil {
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res.Id.Tenancy = &pbresource.Tenancy{}
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}
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// TODO(peering/v2) prevent non-local peer resources
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res.Id.Tenancy.Partition = PartitionOrDefault(res.Id.Tenancy.Partition)
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if !util.IsTypePartitionScoped(res.Id.Type) {
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res.Id.Tenancy.Namespace = NamespaceOrDefault(res.Id.Tenancy.Namespace)
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}
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switch {
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case util.EqualType(pbauth.ComputedTrafficPermissionsType, res.Id.GetType()),
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util.EqualType(pbauth.WorkloadIdentityType, res.Id.GetType()):
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fallthrough
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case util.EqualType(pbmesh.ComputedRoutesType, res.Id.GetType()),
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util.EqualType(pbmesh.ProxyStateTemplateType, res.Id.GetType()):
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fallthrough
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case util.EqualType(pbcatalog.HealthChecksType, res.Id.GetType()),
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util.EqualType(pbcatalog.HealthStatusType, res.Id.GetType()),
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util.EqualType(pbcatalog.NodeType, res.Id.GetType()),
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util.EqualType(pbcatalog.ServiceEndpointsType, res.Id.GetType()),
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util.EqualType(pbcatalog.WorkloadType, res.Id.GetType()):
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return nil, fmt.Errorf("you should not create a resource of type %q this way", util.TypeToString(res.Id.Type))
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}
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addTenancy(res.Id.Tenancy.Partition, res.Id.Tenancy.Namespace)
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}
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seenNodes := make(map[NodeID]struct{})
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for _, n := range c.Nodes {
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if n.Name == "" {
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return nil, fmt.Errorf("cluster %q node has no name", c.Name)
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}
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if !IsValidLabel(n.Name) {
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return nil, fmt.Errorf("node name is not valid: %s", n.Name)
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}
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switch n.Kind {
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case NodeKindServer, NodeKindClient, NodeKindDataplane:
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default:
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return nil, fmt.Errorf("cluster %q node %q has invalid kind: %s", c.Name, n.Name, n.Kind)
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}
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if n.Version == NodeVersionUnknown {
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n.Version = NodeVersionV1
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}
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switch n.Version {
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case NodeVersionV1:
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case NodeVersionV2:
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if n.Kind == NodeKindClient {
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return nil, fmt.Errorf("v2 does not support client agents at this time")
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}
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c.EnableV2 = true
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default:
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return nil, fmt.Errorf("cluster %q node %q has invalid version: %s", c.Name, n.Name, n.Version)
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}
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n.Partition = PartitionOrDefault(n.Partition)
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if !IsValidLabel(n.Partition) {
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return nil, fmt.Errorf("node partition is not valid: %s", n.Partition)
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}
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addTenancy(n.Partition, "default")
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if _, exists := seenNodes[n.ID()]; exists {
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return nil, fmt.Errorf("cannot have two nodes in the same cluster %q with the same name %q", c.Name, n.ID())
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}
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seenNodes[n.ID()] = struct{}{}
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if len(n.usedPorts) != 0 {
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return nil, fmt.Errorf("user cannot specify the usedPorts field")
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}
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n.usedPorts = make(map[int]int)
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exposePort := func(v int) bool {
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if _, ok := n.usedPorts[v]; ok {
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return false
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}
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n.usedPorts[v] = 0
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return true
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}
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if n.IsAgent() {
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// TODO: the ux here is awful; we should be able to examine the topology to guess properly
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exposePort(8500)
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if n.IsServer() {
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exposePort(8503)
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} else {
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exposePort(8502)
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}
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}
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if n.Index != 0 {
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return nil, fmt.Errorf("user cannot specify the node index")
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}
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n.Index = nextIndex
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nextIndex++
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n.Images = c.Images.OverrideWith(n.Images.ChooseConsul(c.Enterprise)).ChooseNode(n.Kind)
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n.Cluster = c.Name
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n.Datacenter = c.Datacenter
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n.dockerName = DockerPrefix + "-" + n.Name + "-" + id
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if len(n.Addresses) == 0 {
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n.Addresses = append(n.Addresses, &Address{Network: c.NetworkName})
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}
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var (
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numPublic int
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numLocal int
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)
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for _, addr := range n.Addresses {
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if addr.Network == "" {
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return nil, fmt.Errorf("cluster %q node %q has invalid address", c.Name, n.Name)
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}
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if addr.Type != "" {
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return nil, fmt.Errorf("user cannot specify the address type directly")
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}
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net, ok := networks[addr.Network]
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if !ok {
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return nil, fmt.Errorf("cluster %q node %q uses network name %q that does not exist", c.Name, n.Name, addr.Network)
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}
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if net.IsPublic() {
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numPublic++
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} else if net.IsLocal() {
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numLocal++
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}
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addr.Type = net.Type
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addr.DockerNetworkName = net.DockerName
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}
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if numLocal == 0 {
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return nil, fmt.Errorf("cluster %q node %q has no local addresses", c.Name, n.Name)
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}
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if numPublic > 1 {
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return nil, fmt.Errorf("cluster %q node %q has more than one public address", c.Name, n.Name)
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}
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if len(n.Services) > 0 {
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logger.Warn("please use Node.Workloads instead of Node.Services")
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n.Workloads = append(n.Workloads, n.Services...)
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n.Services = nil
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}
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if n.IsDataplane() && len(n.Workloads) > 1 {
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// Our use of consul-dataplane here is supposed to mimic that
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// of consul-k8s, which ultimately has one IP per Service, so
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// we introduce the same limitation here.
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return nil, fmt.Errorf("cluster %q node %q uses dataplane, but has more than one service", c.Name, n.Name)
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}
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seenServices := make(map[ID]struct{})
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for _, wrk := range n.Workloads {
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if n.IsAgent() {
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// Default to that of the enclosing node.
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wrk.ID.Partition = n.Partition
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}
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wrk.ID.Normalize()
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// Denormalize
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wrk.Node = n
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wrk.NodeVersion = n.Version
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if n.IsV2() {
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wrk.Workload = wrk.ID.Name + "-" + n.Name
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}
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if !IsValidLabel(wrk.ID.Partition) {
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return nil, fmt.Errorf("service partition is not valid: %s", wrk.ID.Partition)
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}
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if !IsValidLabel(wrk.ID.Namespace) {
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return nil, fmt.Errorf("service namespace is not valid: %s", wrk.ID.Namespace)
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}
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if !IsValidLabel(wrk.ID.Name) {
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return nil, fmt.Errorf("service name is not valid: %s", wrk.ID.Name)
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}
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if wrk.ID.Partition != n.Partition {
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return nil, fmt.Errorf("service %s on node %s has mismatched partitions: %s != %s",
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wrk.ID.Name, n.Name, wrk.ID.Partition, n.Partition)
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}
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addTenancy(wrk.ID.Partition, wrk.ID.Namespace)
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if _, exists := seenServices[wrk.ID]; exists {
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return nil, fmt.Errorf("cannot have two services on the same node %q in the same cluster %q with the same name %q", n.ID(), c.Name, wrk.ID)
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}
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seenServices[wrk.ID] = struct{}{}
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if !wrk.DisableServiceMesh && n.IsDataplane() {
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if wrk.EnvoyPublicListenerPort <= 0 {
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if _, ok := n.usedPorts[20000]; !ok {
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// For convenience the FIRST service on a node can get 20000 for free.
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wrk.EnvoyPublicListenerPort = 20000
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} else {
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return nil, fmt.Errorf("envoy public listener port is required")
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}
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}
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}
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// add all of the service ports
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for _, port := range wrk.ports() {
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if ok := exposePort(port); !ok {
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return nil, fmt.Errorf("port used more than once on cluster %q node %q: %d", c.Name, n.ID(), port)
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}
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}
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// TODO(rb): re-expose?
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// switch wrk.Protocol {
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// case "":
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// wrk.Protocol = "tcp"
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// fallthrough
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// case "tcp":
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// if wrk.CheckHTTP != "" {
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// return nil, fmt.Errorf("cannot set CheckHTTP for tcp service")
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// }
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// case "http":
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// if wrk.CheckTCP != "" {
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// return nil, fmt.Errorf("cannot set CheckTCP for tcp service")
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// }
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// default:
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// return nil, fmt.Errorf("service has invalid protocol: %s", wrk.Protocol)
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// }
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defaultDestination := func(dest *Destination) error {
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// Default to that of the enclosing service.
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if dest.Peer == "" {
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if dest.ID.Partition == "" {
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dest.ID.Partition = wrk.ID.Partition
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}
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if dest.ID.Namespace == "" {
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dest.ID.Namespace = wrk.ID.Namespace
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}
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} else {
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if dest.ID.Partition != "" {
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dest.ID.Partition = "" // irrelevant here; we'll set it to the value of the OTHER side for plumbing purposes in tests
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}
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dest.ID.Namespace = NamespaceOrDefault(dest.ID.Namespace)
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foundPeerNames[c.Name][dest.Peer] = struct{}{}
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}
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addTenancy(dest.ID.Partition, dest.ID.Namespace)
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if dest.Implied {
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if dest.PortName == "" {
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return fmt.Errorf("implicit destinations must use port names in v2")
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}
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} else {
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if dest.LocalAddress == "" {
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// v1 defaults to 127.0.0.1 but v2 does not. Safe to do this generally though.
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dest.LocalAddress = "127.0.0.1"
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}
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if dest.PortName != "" && n.IsV1() {
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return fmt.Errorf("explicit destinations cannot use port names in v1")
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}
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if dest.PortName == "" && n.IsV2() {
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// Assume this is a v1->v2 conversion and name it.
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dest.PortName = "legacy"
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}
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}
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return nil
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}
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for _, dest := range wrk.Destinations {
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if err := defaultDestination(dest); err != nil {
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return nil, err
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}
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}
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if n.IsV2() {
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for _, dest := range wrk.ImpliedDestinations {
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dest.Implied = true
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if err := defaultDestination(dest); err != nil {
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return nil, err
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}
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}
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} else {
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if len(wrk.ImpliedDestinations) > 0 {
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return nil, fmt.Errorf("v1 does not support implied destinations yet")
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}
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}
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if err := wrk.Validate(); err != nil {
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return nil, fmt.Errorf("cluster %q node %q service %q is not valid: %w", c.Name, n.Name, wrk.ID.String(), err)
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}
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if wrk.EnableTransparentProxy && !n.IsDataplane() {
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return nil, fmt.Errorf("cannot enable tproxy on a non-dataplane node")
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}
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if n.IsV2() {
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if implicitV2Services {
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wrk.V2Services = []string{wrk.ID.Name}
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var svcPorts []*pbcatalog.ServicePort
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for name, cfg := range wrk.Ports {
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svcPorts = append(svcPorts, &pbcatalog.ServicePort{
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TargetPort: name,
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Protocol: cfg.ActualProtocol,
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})
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}
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v2svc := &pbcatalog.Service{
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Workloads: &pbcatalog.WorkloadSelector{},
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Ports: svcPorts,
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}
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prev, ok := c.Services[wrk.ID]
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if !ok {
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c.Services[wrk.ID] = v2svc
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prev = v2svc
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}
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if prev.Workloads == nil {
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prev.Workloads = &pbcatalog.WorkloadSelector{}
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}
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prev.Workloads.Names = append(prev.Workloads.Names, wrk.Workload)
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} else {
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for _, name := range wrk.V2Services {
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v2ID := NewServiceID(name, wrk.ID.Namespace, wrk.ID.Partition)
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v2svc, ok := c.Services[v2ID]
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if !ok {
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return nil, fmt.Errorf("cluster %q node %q service %q has a v2 service reference that does not exist %q",
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c.Name, n.Name, wrk.ID.String(), name)
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}
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if v2svc.Workloads == nil {
|
|
v2svc.Workloads = &pbcatalog.WorkloadSelector{}
|
|
}
|
|
v2svc.Workloads.Names = append(v2svc.Workloads.Names, wrk.Workload)
|
|
}
|
|
}
|
|
|
|
if wrk.WorkloadIdentity == "" {
|
|
wrk.WorkloadIdentity = wrk.ID.Name
|
|
}
|
|
} else {
|
|
if len(wrk.V2Services) > 0 {
|
|
return nil, fmt.Errorf("cannot specify v2 services for v1")
|
|
}
|
|
if wrk.WorkloadIdentity != "" {
|
|
return nil, fmt.Errorf("cannot specify workload identities for v1")
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if err := assignVirtualIPs(c); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
if c.EnableV2 {
|
|
// Populate the VirtualPort field on all destinations.
|
|
for _, n := range c.Nodes {
|
|
for _, wrk := range n.Workloads {
|
|
for _, dest := range wrk.ImpliedDestinations {
|
|
res, ok := c.Services[dest.ID]
|
|
if ok {
|
|
for _, sp := range res.Ports {
|
|
if sp.Protocol == pbcatalog.Protocol_PROTOCOL_MESH {
|
|
continue
|
|
}
|
|
if sp.MatchesPortId(dest.PortName) {
|
|
dest.VirtualPort = sp.VirtualPort
|
|
}
|
|
}
|
|
}
|
|
}
|
|
for _, dest := range wrk.Destinations {
|
|
res, ok := c.Services[dest.ID]
|
|
if ok {
|
|
for _, sp := range res.Ports {
|
|
if sp.Protocol == pbcatalog.Protocol_PROTOCOL_MESH {
|
|
continue
|
|
}
|
|
if sp.MatchesPortId(dest.PortName) {
|
|
dest.VirtualPort = sp.VirtualPort
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Explode this into the explicit list based on stray references made.
|
|
c.Partitions = nil
|
|
for ap, nsMap := range tenancies {
|
|
p := &Partition{
|
|
Name: ap,
|
|
}
|
|
for ns := range nsMap {
|
|
p.Namespaces = append(p.Namespaces, ns)
|
|
}
|
|
sort.Strings(p.Namespaces)
|
|
c.Partitions = append(c.Partitions, p)
|
|
}
|
|
sort.Slice(c.Partitions, func(i, j int) bool {
|
|
return c.Partitions[i].Name < c.Partitions[j].Name
|
|
})
|
|
|
|
if !c.Enterprise {
|
|
expect := []*Partition{{Name: "default", Namespaces: []string{"default"}}}
|
|
if !reflect.DeepEqual(c.Partitions, expect) {
|
|
return nil, fmt.Errorf("cluster %q references non-default partitions or namespaces but is CE", c.Name)
|
|
}
|
|
}
|
|
}
|
|
|
|
clusteredPeerings := make(map[string]map[string]*PeerCluster) // local-cluster -> local-peer -> info
|
|
addPeerMapEntry := func(pc PeerCluster) {
|
|
pm, ok := clusteredPeerings[pc.Name]
|
|
if !ok {
|
|
pm = make(map[string]*PeerCluster)
|
|
clusteredPeerings[pc.Name] = pm
|
|
}
|
|
pm[pc.PeerName] = &pc
|
|
}
|
|
for _, p := range raw.Peerings {
|
|
dialingCluster, ok := clusters[p.Dialing.Name]
|
|
if !ok {
|
|
return nil, fmt.Errorf("peering references a dialing cluster that does not exist: %s", p.Dialing.Name)
|
|
}
|
|
acceptingCluster, ok := clusters[p.Accepting.Name]
|
|
if !ok {
|
|
return nil, fmt.Errorf("peering references an accepting cluster that does not exist: %s", p.Accepting.Name)
|
|
}
|
|
if p.Dialing.Name == p.Accepting.Name {
|
|
return nil, fmt.Errorf("self peerings are not allowed: %s", p.Dialing.Name)
|
|
}
|
|
|
|
p.Dialing.Partition = PartitionOrDefault(p.Dialing.Partition)
|
|
p.Accepting.Partition = PartitionOrDefault(p.Accepting.Partition)
|
|
|
|
if dialingCluster.Enterprise {
|
|
if !dialingCluster.hasPartition(p.Dialing.Partition) {
|
|
return nil, fmt.Errorf("dialing side of peering cannot reference a partition that does not exist: %s", p.Dialing.Partition)
|
|
}
|
|
} else {
|
|
if p.Dialing.Partition != "default" {
|
|
return nil, fmt.Errorf("dialing side of peering cannot reference a partition when CE")
|
|
}
|
|
}
|
|
if acceptingCluster.Enterprise {
|
|
if !acceptingCluster.hasPartition(p.Accepting.Partition) {
|
|
return nil, fmt.Errorf("accepting side of peering cannot reference a partition that does not exist: %s", p.Accepting.Partition)
|
|
}
|
|
} else {
|
|
if p.Accepting.Partition != "default" {
|
|
return nil, fmt.Errorf("accepting side of peering cannot reference a partition when CE")
|
|
}
|
|
}
|
|
|
|
if p.Dialing.PeerName == "" {
|
|
p.Dialing.PeerName = "peer-" + p.Accepting.Name + "-" + p.Accepting.Partition
|
|
}
|
|
if p.Accepting.PeerName == "" {
|
|
p.Accepting.PeerName = "peer-" + p.Dialing.Name + "-" + p.Dialing.Partition
|
|
}
|
|
|
|
{ // Ensure the link fields do not have recursive links.
|
|
p.Dialing.Link = nil
|
|
p.Accepting.Link = nil
|
|
|
|
// Copy the un-linked data before setting the link
|
|
pa := p.Accepting
|
|
pd := p.Dialing
|
|
|
|
p.Accepting.Link = &pd
|
|
p.Dialing.Link = &pa
|
|
}
|
|
|
|
addPeerMapEntry(p.Accepting)
|
|
addPeerMapEntry(p.Dialing)
|
|
|
|
delete(foundPeerNames[p.Accepting.Name], p.Accepting.PeerName)
|
|
delete(foundPeerNames[p.Dialing.Name], p.Dialing.PeerName)
|
|
}
|
|
|
|
for cluster, peers := range foundPeerNames {
|
|
if len(peers) > 0 {
|
|
var pretty []string
|
|
for name := range peers {
|
|
pretty = append(pretty, name)
|
|
}
|
|
sort.Strings(pretty)
|
|
return nil, fmt.Errorf("cluster[%s] found topology references to peerings that do not exist: %v", cluster, pretty)
|
|
}
|
|
}
|
|
|
|
// after we decoded the peering stuff, we can fill in some computed data in the destinations
|
|
for _, c := range clusters {
|
|
c.Peerings = clusteredPeerings[c.Name]
|
|
for _, n := range c.Nodes {
|
|
for _, wrk := range n.Workloads {
|
|
for _, dest := range wrk.Destinations {
|
|
if dest.Peer == "" {
|
|
dest.Cluster = c.Name
|
|
dest.Peering = nil
|
|
continue
|
|
}
|
|
remotePeer, ok := c.Peerings[dest.Peer]
|
|
if !ok {
|
|
return nil, fmt.Errorf("not possible")
|
|
}
|
|
dest.Cluster = remotePeer.Link.Name
|
|
dest.Peering = remotePeer.Link
|
|
// this helps in generating fortio assertions; otherwise field is ignored
|
|
dest.ID.Partition = remotePeer.Link.Partition
|
|
}
|
|
for _, dest := range wrk.ImpliedDestinations {
|
|
if dest.Peer == "" {
|
|
dest.Cluster = c.Name
|
|
dest.Peering = nil
|
|
continue
|
|
}
|
|
remotePeer, ok := c.Peerings[dest.Peer]
|
|
if !ok {
|
|
return nil, fmt.Errorf("not possible")
|
|
}
|
|
dest.Cluster = remotePeer.Link.Name
|
|
dest.Peering = remotePeer.Link
|
|
// this helps in generating fortio assertions; otherwise field is ignored
|
|
dest.ID.Partition = remotePeer.Link.Partition
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
t := &Topology{
|
|
ID: id,
|
|
Networks: networks,
|
|
Clusters: clusters,
|
|
Images: images,
|
|
Peerings: raw.Peerings,
|
|
NetworkAreas: raw.NetworkAreas,
|
|
}
|
|
|
|
if prev != nil {
|
|
// networks cannot change
|
|
if !sameKeys(prev.Networks, t.Networks) {
|
|
return nil, fmt.Errorf("cannot create or destroy networks")
|
|
}
|
|
|
|
for _, newNetwork := range t.Networks {
|
|
oldNetwork := prev.Networks[newNetwork.Name]
|
|
|
|
// Carryover
|
|
newNetwork.inheritFromExisting(oldNetwork)
|
|
|
|
if err := isSame(oldNetwork, newNetwork); err != nil {
|
|
return nil, fmt.Errorf("networks cannot change: %w", err)
|
|
}
|
|
|
|
}
|
|
|
|
// cannot add or remove an entire cluster
|
|
if !sameKeys(prev.Clusters, t.Clusters) {
|
|
return nil, fmt.Errorf("cannot create or destroy clusters")
|
|
}
|
|
|
|
for _, newCluster := range t.Clusters {
|
|
oldCluster := prev.Clusters[newCluster.Name]
|
|
|
|
// Carryover
|
|
newCluster.inheritFromExisting(oldCluster)
|
|
|
|
if newCluster.Name != oldCluster.Name ||
|
|
newCluster.NetworkName != oldCluster.NetworkName ||
|
|
newCluster.Datacenter != oldCluster.Datacenter ||
|
|
newCluster.Enterprise != oldCluster.Enterprise {
|
|
return nil, fmt.Errorf("cannot edit some cluster fields for %q", newCluster.Name)
|
|
}
|
|
|
|
// WARN on presence of some things.
|
|
if len(newCluster.InitialConfigEntries) > 0 {
|
|
logger.Warn("initial config entries were provided, but are skipped on recompile")
|
|
}
|
|
if len(newCluster.InitialResources) > 0 {
|
|
logger.Warn("initial resources were provided, but are skipped on recompile")
|
|
}
|
|
|
|
// Check NODES
|
|
if err := inheritAndValidateNodes(oldCluster.Nodes, newCluster.Nodes); err != nil {
|
|
return nil, fmt.Errorf("some immutable aspects of nodes were changed in cluster %q: %w", newCluster.Name, err)
|
|
}
|
|
}
|
|
}
|
|
|
|
return t, nil
|
|
}
|
|
|
|
func assignVirtualIPs(c *Cluster) error {
|
|
lastVIPIndex := 1
|
|
for _, svcData := range c.Services {
|
|
lastVIPIndex++
|
|
if lastVIPIndex > 250 {
|
|
return fmt.Errorf("too many ips using this approach to VIPs")
|
|
}
|
|
svcData.VirtualIps = []string{
|
|
fmt.Sprintf("10.244.0.%d", lastVIPIndex),
|
|
}
|
|
|
|
// populate virtual ports where we forgot them
|
|
var (
|
|
usedPorts = make(map[uint32]struct{})
|
|
next = uint32(8080)
|
|
)
|
|
for _, sp := range svcData.Ports {
|
|
if sp.Protocol == pbcatalog.Protocol_PROTOCOL_MESH {
|
|
continue
|
|
}
|
|
if sp.VirtualPort > 0 {
|
|
usedPorts[sp.VirtualPort] = struct{}{}
|
|
}
|
|
}
|
|
for _, sp := range svcData.Ports {
|
|
if sp.Protocol == pbcatalog.Protocol_PROTOCOL_MESH {
|
|
continue
|
|
}
|
|
if sp.VirtualPort > 0 {
|
|
continue
|
|
}
|
|
RETRY:
|
|
attempt := next
|
|
next++
|
|
_, used := usedPorts[attempt]
|
|
if used {
|
|
goto RETRY
|
|
}
|
|
usedPorts[attempt] = struct{}{}
|
|
sp.VirtualPort = attempt
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
const permutedWarning = "use the disabled node kind if you want to ignore a node"
|
|
|
|
func inheritAndValidateNodes(
|
|
prev, curr []*Node,
|
|
) error {
|
|
nodeMap := mapifyNodes(curr)
|
|
|
|
for prevIdx, node := range prev {
|
|
currNode, ok := nodeMap[node.ID()]
|
|
if !ok {
|
|
return fmt.Errorf("node %q has vanished; "+permutedWarning, node.ID())
|
|
}
|
|
// Ensure it hasn't been permuted.
|
|
if currNode.Pos != prevIdx {
|
|
return fmt.Errorf(
|
|
"node %q has been shuffled %d -> %d; "+permutedWarning,
|
|
node.ID(),
|
|
prevIdx,
|
|
currNode.Pos,
|
|
)
|
|
}
|
|
|
|
if currNode.Node.Kind != node.Kind ||
|
|
currNode.Node.Version != node.Version ||
|
|
currNode.Node.Partition != node.Partition ||
|
|
currNode.Node.Name != node.Name ||
|
|
currNode.Node.Index != node.Index ||
|
|
len(currNode.Node.Addresses) != len(node.Addresses) ||
|
|
!sameKeys(currNode.Node.usedPorts, node.usedPorts) {
|
|
return fmt.Errorf("cannot edit some node fields for %q", node.ID())
|
|
}
|
|
|
|
currNode.Node.inheritFromExisting(node)
|
|
|
|
for i := 0; i < len(currNode.Node.Addresses); i++ {
|
|
prevAddr := node.Addresses[i]
|
|
currAddr := currNode.Node.Addresses[i]
|
|
|
|
if prevAddr.Network != currAddr.Network {
|
|
return fmt.Errorf("addresses were shuffled for node %q", node.ID())
|
|
}
|
|
|
|
if prevAddr.Type != currAddr.Type {
|
|
return fmt.Errorf("cannot edit some address fields for %q", node.ID())
|
|
}
|
|
|
|
currAddr.inheritFromExisting(prevAddr)
|
|
}
|
|
|
|
wrkMap := mapifyWorkloads(currNode.Node.Workloads)
|
|
|
|
for _, wrk := range node.Workloads {
|
|
currWrk, ok := wrkMap[wrk.ID]
|
|
if !ok {
|
|
continue // service has vanished, this is ok
|
|
}
|
|
// don't care about index permutation
|
|
|
|
if currWrk.ID != wrk.ID ||
|
|
currWrk.Port != wrk.Port ||
|
|
!maps.Equal(currWrk.Ports, wrk.Ports) ||
|
|
currWrk.EnvoyAdminPort != wrk.EnvoyAdminPort ||
|
|
currWrk.EnvoyPublicListenerPort != wrk.EnvoyPublicListenerPort ||
|
|
isSame(currWrk.Command, wrk.Command) != nil ||
|
|
isSame(currWrk.Env, wrk.Env) != nil {
|
|
return fmt.Errorf("cannot edit some address fields for %q", wrk.ID)
|
|
}
|
|
|
|
currWrk.inheritFromExisting(wrk)
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func newTopologyID() (string, error) {
|
|
const n = 16
|
|
id := make([]byte, n)
|
|
if _, err := crand.Read(id[:]); err != nil {
|
|
return "", err
|
|
}
|
|
return hex.EncodeToString(id)[:n], nil
|
|
}
|
|
|
|
// matches valid DNS labels according to RFC 1123, should be at most 63
|
|
// characters according to the RFC
|
|
var validLabel = regexp.MustCompile(`^[a-zA-Z0-9]([a-zA-Z0-9\-]{0,61}[a-zA-Z0-9])?$`)
|
|
|
|
// IsValidLabel returns true if the string given is a valid DNS label (RFC 1123).
|
|
// Note: the only difference between RFC 1035 and RFC 1123 labels is that in
|
|
// RFC 1123 labels can begin with a number.
|
|
func IsValidLabel(name string) bool {
|
|
return validLabel.MatchString(name)
|
|
}
|
|
|
|
// ValidateLabel is similar to IsValidLabel except it returns an error
|
|
// instead of false when name is not a valid DNS label. The error will contain
|
|
// reference to what constitutes a valid DNS label.
|
|
func ValidateLabel(name string) error {
|
|
if !IsValidLabel(name) {
|
|
return errors.New("a valid DNS label must consist of lower case alphanumeric characters or '-', and must start and end with an alphanumeric character")
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func isSame(x, y any) error {
|
|
diff := cmp.Diff(x, y)
|
|
if diff != "" {
|
|
return fmt.Errorf("values are not equal\n--- expected\n+++ actual\n%v", diff)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func sameKeys[K comparable, V any](x, y map[K]V) bool {
|
|
if len(x) != len(y) {
|
|
return false
|
|
}
|
|
|
|
for kx := range x {
|
|
if _, ok := y[kx]; !ok {
|
|
return false
|
|
}
|
|
}
|
|
return true
|
|
}
|
|
|
|
func mapifyNodes(nodes []*Node) map[NodeID]nodeWithPosition {
|
|
m := make(map[NodeID]nodeWithPosition)
|
|
for i, node := range nodes {
|
|
m[node.ID()] = nodeWithPosition{
|
|
Pos: i,
|
|
Node: node,
|
|
}
|
|
}
|
|
return m
|
|
}
|
|
|
|
type nodeWithPosition struct {
|
|
Pos int
|
|
Node *Node
|
|
}
|
|
|
|
func mapifyWorkloads(workloads []*Service) map[ID]*Service {
|
|
m := make(map[ID]*Service)
|
|
for _, wrk := range workloads {
|
|
m[wrk.ID] = wrk
|
|
}
|
|
return m
|
|
}
|