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1 | 1 | package main |
2 | 2 |
|
3 | 3 | import ( |
| 4 | + "bytes" |
| 5 | + "encoding/json" |
| 6 | + "fmt" |
| 7 | + "io" |
| 8 | + "net/http" |
| 9 | + "os" |
| 10 | + "path/filepath" |
| 11 | + "strings" |
| 12 | + |
| 13 | + "github.com/RussellLuo/orchestrator" |
| 14 | + "github.com/RussellLuo/orchestrator/builtin" |
4 | 15 | "github.com/alecthomas/kong" |
| 16 | + "github.com/chzyer/readline" |
| 17 | + "sigs.k8s.io/yaml" |
5 | 18 | ) |
6 | 19 |
|
7 | 20 | type ServeCmd struct { |
8 | 21 | Addr string `help:"The TCP network address to listen on." default:":8888"` |
9 | 22 | } |
10 | 23 |
|
11 | 24 | func (cmd *ServeCmd) Run() error { |
12 | | - return startServer(cmd.Addr) |
| 25 | + return startServer(cmd.Addr, false, make(chan int)) |
13 | 26 | } |
14 | 27 |
|
15 | | -type RunCmd struct{ |
| 28 | +type RunCmd struct { |
16 | 29 | Filename string `help:"Filename or URL to a file that represents a flow." arg:""` |
17 | 30 | } |
18 | 31 |
|
19 | 32 | func (cmd *RunCmd) Run() error { |
| 33 | + stopC := make(chan int) |
| 34 | + go func() { |
| 35 | + _ = startServer(":8888", true, stopC) |
| 36 | + }() |
| 37 | + |
| 38 | + var f flow |
| 39 | + switch ext := filepath.Ext(cmd.Filename); ext { |
| 40 | + case ".yaml": |
| 41 | + if err := cmd.readFlow("application/yaml", cmd.Filename, &f); err != nil { |
| 42 | + return err |
| 43 | + } |
| 44 | + |
| 45 | + case ".json": |
| 46 | + if err := cmd.readFlow("application/json", cmd.Filename, &f); err != nil { |
| 47 | + return err |
| 48 | + } |
| 49 | + |
| 50 | + default: |
| 51 | + return fmt.Errorf("unsupported format: %q", ext) |
| 52 | + } |
| 53 | + |
| 54 | + if err := cmd.addFlow(f); err != nil { |
| 55 | + return err |
| 56 | + } |
| 57 | + |
| 58 | + rl, err := readline.NewEx(&readline.Config{ |
| 59 | + Prompt: ">>> ", |
| 60 | + InterruptPrompt: "^C", |
| 61 | + EOFPrompt: "exit", |
| 62 | + }) |
| 63 | + if err != nil { |
| 64 | + return err |
| 65 | + } |
| 66 | + defer rl.Close() |
| 67 | + //rl.CaptureExitSignal() |
| 68 | + |
| 69 | +Next: |
| 70 | + for { |
| 71 | + var query string |
| 72 | + query, err = rl.Readline() |
| 73 | + if err != nil { |
| 74 | + if err == io.EOF { |
| 75 | + return nil |
| 76 | + } |
| 77 | + return err |
| 78 | + } |
| 79 | + |
| 80 | + // TODO: Support messages. |
| 81 | + data := map[string]string{"query": query} |
| 82 | + body, err := json.Marshal(data) |
| 83 | + if err != nil { |
| 84 | + return err |
| 85 | + } |
| 86 | + |
| 87 | + url := fmt.Sprintf("http://localhost:8888/api/flows/%s:run", f.Name) |
| 88 | + resp, err := http.Post(url, "application/json", bytes.NewBuffer(body)) |
| 89 | + if err != nil { |
| 90 | + return err |
| 91 | + } |
| 92 | + defer resp.Body.Close() |
| 93 | + |
| 94 | + reader := builtin.NewEventStreamReader(resp.Body, 1<<16) |
| 95 | + for { |
| 96 | + event, err := reader.ReadEvent() |
| 97 | + if err != nil { |
| 98 | + if err == io.EOF { |
| 99 | + // Reach the end of the response payload. |
| 100 | + continue Next |
| 101 | + } |
| 102 | + return err |
| 103 | + } |
| 104 | + // Show the event data. |
| 105 | + if len(event.Data) > 0 { |
| 106 | + // TODO: Support other output format? |
| 107 | + var eventData struct { |
| 108 | + Content string `json:"content"` |
| 109 | + } |
| 110 | + if err := json.Unmarshal(event.Data, &eventData); err != nil { |
| 111 | + return err |
| 112 | + } |
| 113 | + fmt.Printf(eventData.Content) |
| 114 | + } |
| 115 | + } |
| 116 | + } |
| 117 | + |
20 | 118 | return nil |
21 | 119 | } |
22 | 120 |
|
| 121 | +func (cmd *RunCmd) readFlow(mimetype string, filename string, f *flow) error { |
| 122 | + var data []byte |
| 123 | + if strings.HasPrefix(filename, "http://") || strings.HasPrefix(filename, "https://") { |
| 124 | + resp, err := http.Get(filename) |
| 125 | + if err != nil { |
| 126 | + return err |
| 127 | + } |
| 128 | + defer resp.Body.Close() |
| 129 | + content, err := io.ReadAll(resp.Body) |
| 130 | + if err != nil { |
| 131 | + return err |
| 132 | + } |
| 133 | + data = content |
| 134 | + } else { |
| 135 | + content, err := os.ReadFile(filename) |
| 136 | + if err != nil { |
| 137 | + return err |
| 138 | + } |
| 139 | + data = content |
| 140 | + } |
| 141 | + |
| 142 | + switch mimetype { |
| 143 | + case "application/yaml": |
| 144 | + return yaml.Unmarshal(data, f) |
| 145 | + case "application/json": |
| 146 | + return json.Unmarshal(data, f) |
| 147 | + } |
| 148 | + return nil |
| 149 | +} |
| 150 | + |
| 151 | +func (cmd *RunCmd) addFlow(f flow) error { |
| 152 | + data, err := json.Marshal(f) |
| 153 | + if err != nil { |
| 154 | + return err |
| 155 | + } |
| 156 | + |
| 157 | + req, err := http.NewRequest("PUT", "http://localhost:8888/api/flows/"+f.Name, bytes.NewBuffer(data)) |
| 158 | + if err != nil { |
| 159 | + return err |
| 160 | + } |
| 161 | + req.Header.Set("Content-Type", "application/json") |
| 162 | + |
| 163 | + resp, err := http.DefaultClient.Do(req) |
| 164 | + if err != nil { |
| 165 | + return err |
| 166 | + } |
| 167 | + defer resp.Body.Close() |
| 168 | + |
| 169 | + return nil |
| 170 | +} |
| 171 | + |
| 172 | +type flow struct { |
| 173 | + orchestrator.TaskHeader |
| 174 | + Input map[string]any `json:"input"` |
| 175 | +} |
| 176 | + |
23 | 177 | var cli struct { |
24 | 178 | Serve ServeCmd `cmd:"" help:"Start LLMFlow."` |
25 | 179 | Run RunCmd `cmd:"" help:"Run a flow."` |
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