|
| 1 | +package catalognext |
| 2 | + |
| 3 | +import ( |
| 4 | + "context" |
| 5 | + "encoding/json" |
| 6 | + "fmt" |
| 7 | + "sort" |
| 8 | + "strings" |
| 9 | + |
| 10 | + "github.com/goccy/go-yaml" |
| 11 | + |
| 12 | + "github.com/docker/mcp-gateway/pkg/db" |
| 13 | + "github.com/docker/mcp-gateway/pkg/workingset" |
| 14 | +) |
| 15 | + |
| 16 | +type serverFilter struct { |
| 17 | + key string |
| 18 | + value string |
| 19 | +} |
| 20 | + |
| 21 | +// ListServers lists servers in a catalog with optional filtering |
| 22 | +func ListServers(ctx context.Context, dao db.DAO, catalogRef string, filters []string, format workingset.OutputFormat) error { |
| 23 | + parsedFilters, err := parseFilters(filters) |
| 24 | + if err != nil { |
| 25 | + return err |
| 26 | + } |
| 27 | + |
| 28 | + // Get the catalog |
| 29 | + dbCatalog, err := dao.GetCatalog(ctx, catalogRef) |
| 30 | + if err != nil { |
| 31 | + return fmt.Errorf("failed to get catalog %s: %w", catalogRef, err) |
| 32 | + } |
| 33 | + |
| 34 | + catalog := NewFromDb(dbCatalog) |
| 35 | + |
| 36 | + // Apply name filter |
| 37 | + var nameFilter string |
| 38 | + for _, filter := range parsedFilters { |
| 39 | + switch filter.key { |
| 40 | + case "name": |
| 41 | + nameFilter = filter.value |
| 42 | + default: |
| 43 | + return fmt.Errorf("unsupported filter key: %s", filter.key) |
| 44 | + } |
| 45 | + } |
| 46 | + |
| 47 | + // Filter servers |
| 48 | + servers := filterServers(catalog.Servers, nameFilter) |
| 49 | + |
| 50 | + // Output results |
| 51 | + return outputServers(catalog.Ref, catalog.Title, servers, format) |
| 52 | +} |
| 53 | + |
| 54 | +func parseFilters(filters []string) ([]serverFilter, error) { |
| 55 | + parsed := make([]serverFilter, 0, len(filters)) |
| 56 | + for _, filter := range filters { |
| 57 | + parts := strings.SplitN(filter, "=", 2) |
| 58 | + if len(parts) != 2 { |
| 59 | + return nil, fmt.Errorf("invalid filter format: %s (expected key=value)", filter) |
| 60 | + } |
| 61 | + parsed = append(parsed, serverFilter{ |
| 62 | + key: parts[0], |
| 63 | + value: parts[1], |
| 64 | + }) |
| 65 | + } |
| 66 | + return parsed, nil |
| 67 | +} |
| 68 | + |
| 69 | +func filterServers(servers []Server, nameFilter string) []Server { |
| 70 | + if nameFilter == "" { |
| 71 | + return servers |
| 72 | + } |
| 73 | + |
| 74 | + nameLower := strings.ToLower(nameFilter) |
| 75 | + filtered := make([]Server, 0) |
| 76 | + |
| 77 | + for _, server := range servers { |
| 78 | + if matchesNameFilter(server, nameLower) { |
| 79 | + filtered = append(filtered, server) |
| 80 | + } |
| 81 | + } |
| 82 | + |
| 83 | + return filtered |
| 84 | +} |
| 85 | + |
| 86 | +func matchesNameFilter(server Server, nameLower string) bool { |
| 87 | + if server.Snapshot == nil { |
| 88 | + return false |
| 89 | + } |
| 90 | + serverName := strings.ToLower(server.Snapshot.Server.Name) |
| 91 | + return strings.Contains(serverName, nameLower) |
| 92 | +} |
| 93 | + |
| 94 | +func outputServers(catalogRef, catalogTitle string, servers []Server, format workingset.OutputFormat) error { |
| 95 | + // Sort servers by name |
| 96 | + sort.Slice(servers, func(i, j int) bool { |
| 97 | + if servers[i].Snapshot == nil || servers[j].Snapshot == nil { |
| 98 | + return false |
| 99 | + } |
| 100 | + return servers[i].Snapshot.Server.Name < servers[j].Snapshot.Server.Name |
| 101 | + }) |
| 102 | + |
| 103 | + var data []byte |
| 104 | + var err error |
| 105 | + |
| 106 | + switch format { |
| 107 | + case workingset.OutputFormatHumanReadable: |
| 108 | + printServersHuman(catalogRef, catalogTitle, servers) |
| 109 | + return nil |
| 110 | + case workingset.OutputFormatJSON: |
| 111 | + output := map[string]any{ |
| 112 | + "catalog": catalogRef, |
| 113 | + "title": catalogTitle, |
| 114 | + "servers": servers, |
| 115 | + } |
| 116 | + data, err = json.MarshalIndent(output, "", " ") |
| 117 | + case workingset.OutputFormatYAML: |
| 118 | + output := map[string]any{ |
| 119 | + "catalog": catalogRef, |
| 120 | + "title": catalogTitle, |
| 121 | + "servers": servers, |
| 122 | + } |
| 123 | + data, err = yaml.Marshal(output) |
| 124 | + default: |
| 125 | + return fmt.Errorf("unsupported format: %s", format) |
| 126 | + } |
| 127 | + |
| 128 | + if err != nil { |
| 129 | + return fmt.Errorf("failed to format servers: %w", err) |
| 130 | + } |
| 131 | + |
| 132 | + fmt.Println(string(data)) |
| 133 | + return nil |
| 134 | +} |
| 135 | + |
| 136 | +func printServersHuman(catalogRef, catalogTitle string, servers []Server) { |
| 137 | + if len(servers) == 0 { |
| 138 | + fmt.Println("No servers found") |
| 139 | + return |
| 140 | + } |
| 141 | + |
| 142 | + fmt.Printf("Catalog: %s\n", catalogRef) |
| 143 | + fmt.Printf("Title: %s\n", catalogTitle) |
| 144 | + fmt.Printf("Servers (%d):\n\n", len(servers)) |
| 145 | + |
| 146 | + for _, server := range servers { |
| 147 | + if server.Snapshot == nil { |
| 148 | + continue |
| 149 | + } |
| 150 | + srv := server.Snapshot.Server |
| 151 | + fmt.Printf(" %s\n", srv.Name) |
| 152 | + if srv.Title != "" { |
| 153 | + fmt.Printf(" Title: %s\n", srv.Title) |
| 154 | + } |
| 155 | + if srv.Description != "" { |
| 156 | + fmt.Printf(" Description: %s\n", srv.Description) |
| 157 | + } |
| 158 | + fmt.Printf(" Type: %s\n", server.Type) |
| 159 | + switch server.Type { |
| 160 | + case workingset.ServerTypeImage: |
| 161 | + fmt.Printf(" Image: %s\n", server.Image) |
| 162 | + case workingset.ServerTypeRegistry: |
| 163 | + fmt.Printf(" Source: %s\n", server.Source) |
| 164 | + case workingset.ServerTypeRemote: |
| 165 | + fmt.Printf(" Endpoint: %s\n", server.Endpoint) |
| 166 | + } |
| 167 | + if len(srv.Tools) > 0 { |
| 168 | + fmt.Printf(" Tools: %d\n", len(srv.Tools)) |
| 169 | + } |
| 170 | + fmt.Println() |
| 171 | + } |
| 172 | +} |
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