|
| 1 | +// Copyright 2020 The Prometheus Authors |
| 2 | +// Licensed under the Apache License, Version 2.0 (the "License"); |
| 3 | +// you may not use this file except in compliance with the License. |
| 4 | +// You may obtain a copy of the License at |
| 5 | +// |
| 6 | +// http://www.apache.org/licenses/LICENSE-2.0 |
| 7 | +// |
| 8 | +// Unless required by applicable law or agreed to in writing, software |
| 9 | +// distributed under the License is distributed on an "AS IS" BASIS, |
| 10 | +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 11 | +// See the License for the specific language governing permissions and |
| 12 | +// limitations under the License. |
| 13 | + |
| 14 | +package kind |
| 15 | + |
| 16 | +import ( |
| 17 | + "context" |
| 18 | + "fmt" |
| 19 | + "strings" |
| 20 | + |
| 21 | + "github.com/pkg/errors" |
| 22 | + "github.com/prometheus/test-infra/pkg/provider" |
| 23 | + k8sProvider "github.com/prometheus/test-infra/pkg/provider/k8s" |
| 24 | + "gopkg.in/alecthomas/kingpin.v2" |
| 25 | + "k8s.io/apimachinery/pkg/runtime" |
| 26 | + "k8s.io/client-go/kubernetes/scheme" |
| 27 | + "k8s.io/client-go/tools/clientcmd" |
| 28 | + "k8s.io/client-go/util/homedir" |
| 29 | + "sigs.k8s.io/kind/pkg/cluster" |
| 30 | + "sigs.k8s.io/kind/pkg/cmd" |
| 31 | +) |
| 32 | + |
| 33 | +type Resource = provider.Resource |
| 34 | + |
| 35 | +// KIND holds the fields used to generate an API request. |
| 36 | +type KIND struct { |
| 37 | + |
| 38 | + // The k8s provider used when we work with the manifest files. |
| 39 | + k8sProvider *k8sProvider.K8s |
| 40 | + // The kind provider used to instantiate a new provider. |
| 41 | + kindProvider *cluster.Provider |
| 42 | + // Final DeploymentFiles files. |
| 43 | + DeploymentFiles []string |
| 44 | + // Final DeploymentVars. |
| 45 | + DeploymentVars map[string]string |
| 46 | + // DeployResource to construct DeploymentVars and DeploymentFiles |
| 47 | + DeploymentResource *provider.DeploymentResource |
| 48 | + // Content bytes after parsing the template variables, grouped by filename. |
| 49 | + kindResources []Resource |
| 50 | + // K8s resource.runtime objects after parsing the template variables, grouped by filename. |
| 51 | + k8sResources []k8sProvider.Resource |
| 52 | + |
| 53 | + ctx context.Context |
| 54 | + // KIND kuberconfig file |
| 55 | + kubeconfig string |
| 56 | +} |
| 57 | + |
| 58 | +// New is the KIND constructor. |
| 59 | +func New(dr *provider.DeploymentResource) *KIND { |
| 60 | + return &KIND{ |
| 61 | + DeploymentResource: dr, |
| 62 | + kindProvider: cluster.NewProvider( |
| 63 | + cluster.ProviderWithLogger(cmd.NewLogger()), |
| 64 | + ), |
| 65 | + ctx: context.Background(), |
| 66 | + kubeconfig: homedir.HomeDir() + "/.kube/config", |
| 67 | + } |
| 68 | +} |
| 69 | + |
| 70 | +// SetupDeploymentResources Sets up DeploymentVars and DeploymentFiles |
| 71 | +func (c *KIND) SetupDeploymentResources(*kingpin.ParseContext) error { |
| 72 | + customDeploymentVars := map[string]string{ |
| 73 | + "NGINX_SERVICE_TYPE": "NodePort", |
| 74 | + "LOADGEN_SCALE_UP_REPLICAS": "2", |
| 75 | + } |
| 76 | + |
| 77 | + c.DeploymentFiles = c.DeploymentResource.DeploymentFiles |
| 78 | + c.DeploymentVars = provider.MergeDeploymentVars( |
| 79 | + c.DeploymentResource.DefaultDeploymentVars, |
| 80 | + customDeploymentVars, |
| 81 | + c.DeploymentResource.FlagDeploymentVars, |
| 82 | + ) |
| 83 | + return nil |
| 84 | +} |
| 85 | + |
| 86 | +// KINDDeploymentsParse parses the environment/kind deployment files and saves the result as bytes grouped by the filename. |
| 87 | +// Any DeploymentVar will be replaced in the resources files following the golang text template format. |
| 88 | +func (c *KIND) KINDDeploymentsParse(*kingpin.ParseContext) error { |
| 89 | + if err := c.checkDeploymentVarsAndFiles(); err != nil { |
| 90 | + return err |
| 91 | + } |
| 92 | + |
| 93 | + deploymentResource, err := provider.DeploymentsParse(c.DeploymentFiles, c.DeploymentVars) |
| 94 | + if err != nil { |
| 95 | + return err |
| 96 | + } |
| 97 | + c.kindResources = deploymentResource |
| 98 | + return nil |
| 99 | +} |
| 100 | + |
| 101 | +func (c *KIND) K8SDeploymentsParse(*kingpin.ParseContext) error { |
| 102 | + if err := c.checkDeploymentVarsAndFiles(); err != nil { |
| 103 | + return err |
| 104 | + } |
| 105 | + |
| 106 | + deploymentResource, err := provider.DeploymentsParse(c.DeploymentFiles, c.DeploymentVars) |
| 107 | + if err != nil { |
| 108 | + return err |
| 109 | + } |
| 110 | + for _, deployment := range deploymentResource { |
| 111 | + |
| 112 | + decode := scheme.Codecs.UniversalDeserializer().Decode |
| 113 | + k8sObjects := make([]runtime.Object, 0) |
| 114 | + |
| 115 | + for _, text := range strings.Split(string(deployment.Content), provider.Separator) { |
| 116 | + text = strings.TrimSpace(text) |
| 117 | + if len(text) == 0 { |
| 118 | + continue |
| 119 | + } |
| 120 | + |
| 121 | + resource, _, err := decode([]byte(text), nil, nil) |
| 122 | + if err != nil { |
| 123 | + return errors.Wrapf(err, "decoding the resource file:%v, section:%v...", deployment.FileName, text[:100]) |
| 124 | + } |
| 125 | + if resource == nil { |
| 126 | + continue |
| 127 | + } |
| 128 | + k8sObjects = append(k8sObjects, resource) |
| 129 | + } |
| 130 | + if len(k8sObjects) > 0 { |
| 131 | + c.k8sResources = append(c.k8sResources, k8sProvider.Resource{FileName: deployment.FileName, Objects: k8sObjects}) |
| 132 | + } |
| 133 | + } |
| 134 | + return nil |
| 135 | +} |
| 136 | + |
| 137 | +// checkDeploymentVarsAndFiles checks whether the requied deployment vars are passed. |
| 138 | +func (c *KIND) checkDeploymentVarsAndFiles() error { |
| 139 | + reqDepVars := []string{"CLUSTER_NAME"} |
| 140 | + for _, k := range reqDepVars { |
| 141 | + if v, ok := c.DeploymentVars[k]; !ok || v == "" { |
| 142 | + return fmt.Errorf("missing required %v variable", k) |
| 143 | + } |
| 144 | + } |
| 145 | + if len(c.DeploymentFiles) == 0 { |
| 146 | + return fmt.Errorf("missing deployment file(s)") |
| 147 | + } |
| 148 | + return nil |
| 149 | +} |
| 150 | + |
| 151 | +// ClusterCreate create a new cluster or applies changes to an existing cluster. |
| 152 | +func (c *KIND) ClusterCreate(*kingpin.ParseContext) error { |
| 153 | + for _, deployment := range c.kindResources { |
| 154 | + CreateWithConfigFile := cluster.CreateWithRawConfig(deployment.Content) |
| 155 | + |
| 156 | + err := c.kindProvider.Create(c.DeploymentVars["CLUSTER_NAME"], CreateWithConfigFile) |
| 157 | + if err != nil { |
| 158 | + return err |
| 159 | + } |
| 160 | + } |
| 161 | + return nil |
| 162 | +} |
| 163 | + |
| 164 | +// ClusterDelete deletes a k8s cluster. |
| 165 | +func (c *KIND) ClusterDelete(*kingpin.ParseContext) error { |
| 166 | + err := c.kindProvider.Delete(c.DeploymentVars["CLUSTER_NAME"], c.kubeconfig) |
| 167 | + if err != nil { |
| 168 | + return err |
| 169 | + } |
| 170 | + return nil |
| 171 | +} |
| 172 | + |
| 173 | +// NewK8sProvider sets the k8s provider used for deploying k8s manifests. |
| 174 | +func (c *KIND) NewK8sProvider(*kingpin.ParseContext) error { |
| 175 | + var err error |
| 176 | + apiConfig, err := clientcmd.LoadFromFile(c.kubeconfig) |
| 177 | + if err != nil { |
| 178 | + return err |
| 179 | + } |
| 180 | + |
| 181 | + c.k8sProvider, err = k8sProvider.New(c.ctx, apiConfig) |
| 182 | + if err != nil { |
| 183 | + return err |
| 184 | + } |
| 185 | + return nil |
| 186 | +} |
| 187 | + |
| 188 | +// ResourceApply calls k8s.ResourceApply to apply the k8s objects in the manifest files. |
| 189 | +func (c *KIND) ResourceApply(*kingpin.ParseContext) error { |
| 190 | + if err := c.k8sProvider.ResourceApply(c.k8sResources); err != nil { |
| 191 | + return err |
| 192 | + } |
| 193 | + return nil |
| 194 | +} |
| 195 | + |
| 196 | +// ResourceDelete calls k8s.ResourceDelete to apply the k8s objects in the manifest files. |
| 197 | +func (c *KIND) ResourceDelete(*kingpin.ParseContext) error { |
| 198 | + if err := c.k8sProvider.ResourceDelete(c.k8sResources); err != nil { |
| 199 | + return err |
| 200 | + } |
| 201 | + return nil |
| 202 | +} |
| 203 | + |
| 204 | +// GetDeploymentVars shows deployment variables. |
| 205 | +func (c *KIND) GetDeploymentVars(parseContext *kingpin.ParseContext) error { |
| 206 | + fmt.Print("-------------------\n DeploymentVars \n------------------- \n") |
| 207 | + for key, value := range c.DeploymentVars { |
| 208 | + fmt.Println(key, ": ", value) |
| 209 | + } |
| 210 | + return nil |
| 211 | +} |
0 commit comments