1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
|
package llm
import (
"bytes"
"context"
"encoding/json"
"errors"
"fmt"
"net/http"
"strings"
"time"
"hexai/internal/logging"
)
// ollamaClient implements Client against a local Ollama server.
type ollamaClient struct {
httpClient *http.Client
baseURL string
defaultModel string
}
func newOllama(baseURL, model string) Client {
if strings.TrimSpace(baseURL) == "" {
baseURL = "http://localhost:11434"
}
if strings.TrimSpace(model) == "" {
model = "qwen2.5-coder:latest"
}
return &ollamaClient{
httpClient: &http.Client{Timeout: 30 * time.Second},
baseURL: strings.TrimRight(baseURL, "/"),
defaultModel: model,
}
}
type ollamaChatRequest struct {
Model string `json:"model"`
Messages []oaMessage `json:"messages"`
Stream bool `json:"stream"`
Options any `json:"options,omitempty"`
}
type ollamaChatResponse struct {
Message struct {
Role string `json:"role"`
Content string `json:"content"`
} `json:"message"`
Done bool `json:"done"`
Error string `json:"error,omitempty"`
}
func (c *ollamaClient) Chat(ctx context.Context, messages []Message, opts ...RequestOption) (string, error) {
o := Options{Model: c.defaultModel}
for _, opt := range opts {
opt(&o)
}
if o.Model == "" {
o.Model = c.defaultModel
}
start := time.Now()
logging.Logf("llm/ollama ", "chat start model=%s temp=%.2f max_tokens=%d stop=%d messages=%d", o.Model, o.Temperature, o.MaxTokens, len(o.Stop), len(messages))
for i, m := range messages {
logging.Logf("llm/ollama ", "msg[%d] role=%s size=%d preview=%s%s%s", i, m.Role, len(m.Content), logging.AnsiCyan, logging.PreviewForLog(m.Content), logging.AnsiBase)
}
req := ollamaChatRequest{Model: o.Model, Stream: false}
req.Messages = make([]oaMessage, len(messages))
for i, m := range messages {
req.Messages[i] = oaMessage{Role: m.Role, Content: m.Content}
}
// Build options map only if any option is set
optsMap := map[string]any{}
if o.Temperature != 0 {
optsMap["temperature"] = o.Temperature
}
if o.MaxTokens > 0 {
optsMap["num_predict"] = o.MaxTokens
}
if len(o.Stop) > 0 {
optsMap["stop"] = o.Stop
}
if len(optsMap) > 0 {
req.Options = optsMap
}
body, err := json.Marshal(req)
if err != nil {
return "", err
}
endpoint := c.baseURL + "/api/chat"
logging.Logf("llm/ollama ", "POST %s", endpoint)
httpReq, err := http.NewRequestWithContext(ctx, http.MethodPost, endpoint, bytes.NewReader(body))
if err != nil {
return "", err
}
httpReq.Header.Set("Content-Type", "application/json")
resp, err := c.httpClient.Do(httpReq)
if err != nil {
logging.Logf("llm/ollama ", "%shttp error after %s: %v%s", logging.AnsiRed, time.Since(start), err, logging.AnsiBase)
return "", err
}
defer resp.Body.Close()
if resp.StatusCode < 200 || resp.StatusCode >= 300 {
var apiErr ollamaChatResponse
_ = json.NewDecoder(resp.Body).Decode(&apiErr)
if strings.TrimSpace(apiErr.Error) != "" {
logging.Logf("llm/ollama ", "%sapi error status=%d msg=%s duration=%s%s", logging.AnsiRed, resp.StatusCode, apiErr.Error, time.Since(start), logging.AnsiBase)
return "", fmt.Errorf("ollama error: %s (status %d)", apiErr.Error, resp.StatusCode)
}
logging.Logf("llm/ollama ", "%shttp non-2xx status=%d duration=%s%s", logging.AnsiRed, resp.StatusCode, time.Since(start), logging.AnsiBase)
return "", fmt.Errorf("ollama http error: status %d", resp.StatusCode)
}
var out ollamaChatResponse
if err := json.NewDecoder(resp.Body).Decode(&out); err != nil {
logging.Logf("llm/ollama ", "%sdecode error after %s: %v%s", logging.AnsiRed, time.Since(start), err, logging.AnsiBase)
return "", err
}
if strings.TrimSpace(out.Message.Content) == "" {
logging.Logf("llm/ollama ", "%sempty content returned duration=%s%s", logging.AnsiRed, time.Since(start), logging.AnsiBase)
return "", errors.New("ollama: empty content")
}
content := out.Message.Content
logging.Logf("llm/ollama ", "success size=%d preview=%s%s%s duration=%s", len(content), logging.AnsiGreen, logging.PreviewForLog(content), logging.AnsiBase, time.Since(start))
return content, nil
}
// Provider metadata
func (c *ollamaClient) Name() string { return "ollama" }
func (c *ollamaClient) DefaultModel() string { return c.defaultModel }
|
