feat: rework cache package - add gcs cache - add cache purge command

README.md

@@ -595,19 +595,29 @@ _Adding a remote cache_
 
  * AWS S3
    *  _As a prerequisite `AWS_ACCESS_KEY_ID` and `AWS_SECRET_ACCESS_KEY` are required as environmental variables._
-   * Configuration, ``` k8sgpt cache add --region <aws region> --bucket <name> ```
+   * Configuration, ``` k8sgpt cache add s3 --region <aws region> --bucket <name> ```
      * K8sGPT will create the bucket if it does not exist
  * Azure Storage
    * We support a number of [techniques](https://learn.microsoft.com/en-us/azure/developer/go/azure-sdk-authentication?tabs=bash#2-authenticate-with-azure) to authenticate against Azure
-   * Configuration, ``` k8sgpt cache add --storageacc <storage account name> --container <container name> ```
+   * Configuration, ``` k8sgpt cache add azure --storageacc <storage account name> --container <container name> ```
      * K8sGPT assumes that the storage account already exist and it will create the container if it does not exist
-     * It's **users'** responsibility have to grant specific permissions to their identity in order to be able to upload blob files and create SA containers (e.g Storage Blob Data Contributor)       
+     * It is the **user** responsibility have to grant specific permissions to their identity in order to be able to upload blob files and create SA containers (e.g Storage Blob Data Contributor) 
+  * Google Cloud Storage
+    * _As a prerequisite `GOOGLE_APPLICATION_CREDENTIALS` are required as environmental variables._
+    * Configuration, ``` k8sgpt cache add gcs --region <gcp region> --bucket <name> --projectid <project id>```
+      * K8sGPT will create the bucket if it does not exist   
 
 _Listing cache items_
 ```
 k8sgpt cache list
 ```
 
+_Purging an object from the cache_
+Note: purging an object using this command will delete upstream files, so it requires appropriate permissions.
+```
+k8sgpt cache purge $OBJECT_NAME
+```
+
 _Removing the remote cache_
 Note: this will not delete the upstream S3 bucket or Azure storage container
 ```

cmd/cache/add.go

@@ -28,20 +28,31 @@ var (
 	bucketName     string
 	storageAccount string
 	containerName  string
+	projectId      string
 )
 
 // addCmd represents the add command
 var addCmd = &cobra.Command{
-	Use:   "add",
+	Use:   "add [cache type]",
 	Short: "Add a remote cache",
 	Long: `This command allows you to add a remote cache to store the results of an analysis.
 	The supported cache types are:
 	- Azure Blob storage
+	- Google Cloud storage
 	- S3`,
 	Run: func(cmd *cobra.Command, args []string) {
+		if len(args) == 0 {
+			color.Red("Error: Please provide a value for cache types. Run k8sgpt cache add --help")
+			os.Exit(1)
+		}
 		fmt.Println(color.YellowString("Adding remote based cache"))
-		remoteCache := cache.NewCacheProvider(bucketname, region, storageAccount, containerName)
-		err := cache.AddRemoteCache(remoteCache)
+		cacheType := args[0]
+		remoteCache, err := cache.NewCacheProvider(cacheType, bucketname, region, storageAccount, containerName, projectId)
+		if err != nil {
+			color.Red("Error: %v", err)
+			os.Exit(1)
+		}
+		err = cache.AddRemoteCache(remoteCache)
 		if err != nil {
 			color.Red("Error: %v", err)
 			os.Exit(1)
@@ -51,9 +62,10 @@ var addCmd = &cobra.Command{
 
 func init() {
 	CacheCmd.AddCommand(addCmd)
-	addCmd.Flags().StringVarP(&region, "region", "r", "", "The region to use for the AWS S3 cache")
+	addCmd.Flags().StringVarP(&region, "region", "r", "", "The region to use for the AWS S3 or GCS cache")
 	addCmd.Flags().StringVarP(&bucketname, "bucket", "b", "", "The name of the AWS S3 bucket to use for the cache")
 	addCmd.MarkFlagsRequiredTogether("region", "bucket")
+	addCmd.Flags().StringVarP(&projectId, "projectid", "p", "", "The GCP project ID")
 	addCmd.Flags().StringVarP(&storageAccount, "storageacc", "s", "", "The Azure storage account name of the container")
 	addCmd.Flags().StringVarP(&containerName, "container", "c", "", "The Azure container name to use for the cache")
 	addCmd.MarkFlagsRequiredTogether("storageacc", "container")
@@ -62,4 +74,6 @@ func init() {
 	addCmd.MarkFlagsMutuallyExclusive("region", "container")
 	addCmd.MarkFlagsMutuallyExclusive("bucket", "storageacc")
 	addCmd.MarkFlagsMutuallyExclusive("bucket", "container")
+	addCmd.MarkFlagsMutuallyExclusive("projectid", "storageacc")
+	addCmd.MarkFlagsMutuallyExclusive("projectid", "container")
 }

cmd/cache/list.go

@@ -16,9 +16,11 @@ package cache
 
 import (
 	"os"
+	"reflect"
 
 	"github.com/fatih/color"
 	"github.com/k8sgpt-ai/k8sgpt/pkg/cache"
+	"github.com/olekukonko/tablewriter"
 	"github.com/spf13/cobra"
 )
 
@@ -30,22 +32,32 @@ var listCmd = &cobra.Command{
 	Run: func(cmd *cobra.Command, args []string) {
 
 		// load remote cache if it is configured
-		remoteCacheEnabled, err := cache.RemoteCacheEnabled()
+		c, err := cache.GetCacheConfiguration()
 		if err != nil {
 			color.Red("Error: %v", err)
 			os.Exit(1)
 		}
-		c := cache.New(false, remoteCacheEnabled)
-		// list the contents of the cache
 		names, err := c.List()
 		if err != nil {
 			color.Red("Error: %v", err)
 			os.Exit(1)
 		}
 
-		for _, name := range names {
-			println(name)
+		var headers []string
+		obj := cache.CacheObjectDetails{}
+		objType := reflect.TypeOf(obj)
+		for i := 0; i < objType.NumField(); i++ {
+			field := objType.Field(i)
+			headers = append(headers, field.Name)
 		}
+
+		table := tablewriter.NewWriter(os.Stdout)
+		table.SetHeader(headers)
+
+		for _, v := range names {
+			table.Append([]string{v.Name, v.UpdatedAt.String()})
+		}
+		table.Render()
 	},
 }
 

cmd/cache/purge.go

@@ -0,0 +1,54 @@
+/*
+Copyright 2023 The K8sGPT Authors.
+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 cache
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/fatih/color"
+	"github.com/k8sgpt-ai/k8sgpt/pkg/cache"
+	"github.com/spf13/cobra"
+)
+
+var purgeCmd = &cobra.Command{
+	Use:   "purge [object name]",
+	Short: "Purge a remote cache",
+	Long:  "This command allows you to delete/purge one object from the cache",
+	Run: func(cmd *cobra.Command, args []string) {
+		if len(args) == 0 {
+			color.Red("Error: Please provide a value for object name. Run k8sgpt cache purge --help")
+			os.Exit(1)
+		}
+		objectKey := args[0]
+		fmt.Println(color.YellowString("Purging a remote cache."))
+		c, err := cache.GetCacheConfiguration()
+		if err != nil {
+			color.Red("Error: %v", err)
+			os.Exit(1)
+		}
+
+		err = c.Remove(objectKey)
+		if err != nil {
+			color.Red("Error: %v", err)
+			os.Exit(1)
+		}
+		fmt.Println(color.GreenString("Object deleted."))
+	},
+}
+
+func init() {
+	CacheCmd.AddCommand(purgeCmd)
+}

go.mod

@@ -24,15 +24,22 @@ require (
 require github.com/adrg/xdg v0.4.0
 
 require (
-	buf.build/gen/go/k8sgpt-ai/k8sgpt/grpc/go v1.3.0-20231002095256-194bc640518b.1
-	buf.build/gen/go/k8sgpt-ai/k8sgpt/protocolbuffers/go v1.31.0-20231002095256-194bc640518b.1
+	buf.build/gen/go/k8sgpt-ai/k8sgpt/grpc/go v1.3.0-20231116211251-9f5041346631.2
+	buf.build/gen/go/k8sgpt-ai/k8sgpt/protocolbuffers/go v1.28.1-20231116211251-9f5041346631.4
+	cloud.google.com/go/storage v1.30.1
 	github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.4.0
 	github.com/Azure/azure-sdk-for-go/sdk/storage/azblob v1.2.0
 	github.com/aws/aws-sdk-go v1.48.0
 	github.com/cohere-ai/cohere-go v0.2.0
+	github.com/olekukonko/tablewriter v0.0.5
+	google.golang.org/api v0.143.0
 )
 
 require (
+	cloud.google.com/go v0.110.7 // indirect
+	cloud.google.com/go/compute v1.23.0 // indirect
+	cloud.google.com/go/compute/metadata v0.2.3 // indirect
+	cloud.google.com/go/iam v1.1.1 // indirect
 	github.com/Azure/azure-sdk-for-go/sdk/azcore v1.8.0 // indirect
 	github.com/Azure/azure-sdk-for-go/sdk/internal v1.3.0 // indirect
 	github.com/AzureAD/microsoft-authentication-library-for-go v1.1.1 // indirect
@@ -41,13 +48,20 @@ require (
 	github.com/cohere-ai/tokenizer v1.1.1 // indirect
 	github.com/dlclark/regexp2 v1.4.0 // indirect
 	github.com/golang-jwt/jwt/v5 v5.0.0 // indirect
+	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
 	github.com/google/gnostic-models v0.6.9-0.20230804172637-c7be7c783f49 // indirect
+	github.com/google/s2a-go v0.1.7 // indirect
+	github.com/googleapis/enterprise-certificate-proxy v0.3.1 // indirect
+	github.com/googleapis/gax-go/v2 v2.12.0 // indirect
 	github.com/jmespath/go-jmespath v0.4.0 // indirect
 	github.com/kylelemons/godebug v1.1.0 // indirect
 	github.com/pkg/browser v0.0.0-20210911075715-681adbf594b8 // indirect
 	github.com/sagikazarmark/locafero v0.3.0 // indirect
 	github.com/sagikazarmark/slog-shim v0.1.0 // indirect
 	github.com/sourcegraph/conc v0.3.0 // indirect
+	go.opencensus.io v0.24.0 // indirect
+	google.golang.org/genproto v0.0.0-20230913181813-007df8e322eb // indirect
+	google.golang.org/genproto/googleapis/api v0.0.0-20230913181813-007df8e322eb // indirect
 	google.golang.org/genproto/googleapis/rpc v0.0.0-20230920204549-e6e6cdab5c13 // indirect
 )