数据模型

为了说明 Zipkin 展现的追踪数据，让我们把 Zipkin 中的信息与其对应的数据进行关联。通过对比，我们可以发现：
带内和带外请求在不同的跨度中
包含 cs 的跨度可以记录一个它要去哪里的 sa 的标记这有助于当目标没有 Zipkin 装配的时候，比如 MySQL
首先，让我们看一下在 Zipkin 追踪视图里的展现的一条追踪数据：
相同数据在 Zipkin 数据模型中：

1. [
2. {
3. "traceId": "bd7a977555f6b982",
4. "name": "get",
5. "id": "bd7a977555f6b982",
6. "timestamp": 1458702548467000,
7. "duration": 386000,
8. "annotations": [
9. {
10. "endpoint": {
11. "serviceName": "zipkin-query",
12. "ipv4": "192.168.1.2",
13. "port": 9411
14. },
15. "timestamp": 1458702548467000,
16. "value": "sr"
17. },
18. {
19. "endpoint": {
20. "serviceName": "zipkin-query",
21. "ipv4": "192.168.1.2",
22. "port": 9411
23. },
24. "timestamp": 1458702548853000,
25. "value": "ss"
26. }
27. ],
28. "binaryAnnotations": []
29. },
30. {
31. "traceId": "bd7a977555f6b982",
32. "name": "get-traces",
33. "id": "ebf33e1a81dc6f71",
34. "parentId": "bd7a977555f6b982",
35. "timestamp": 1458702548478000,
36. "duration": 354374,
37. "annotations": [],
38. "binaryAnnotations": [
39. {
40. "key": "lc",
41. "value": "JDBCSpanStore",
42. "endpoint": {
43. "serviceName": "zipkin-query",
44. "ipv4": "192.168.1.2",
45. "port": 9411
46. }
47. },
48. {
49. "key": "request",
50. "value": "QueryRequest{serviceName=zipkin-query, spanName=null, annotations=[], binaryAnnotations={}, minDuration=null, maxDuration=null, endTs=1458702548478, lookback=86400000, limit=1}",
51. "endpoint": {
52. "serviceName": "zipkin-query",
53. "ipv4": "192.168.1.2",
54. "port": 9411
55. }
56. }
57. ]
58. },
59. {
60. "traceId": "bd7a977555f6b982",
61. "name": "query",
62. "id": "be2d01e33cc78d97",
63. "parentId": "ebf33e1a81dc6f71",
64. "timestamp": 1458702548786000,
65. "duration": 13000,
66. "annotations": [
67. {
68. "endpoint": {
69. "serviceName": "zipkin-query",
70. "ipv4": "192.168.1.2",
71. "port": 9411
72. },
73. "timestamp": 1458702548786000,
74. "value": "cs"
75. },
76. {
77. "endpoint": {
78. "serviceName": "zipkin-query",
79. "ipv4": "192.168.1.2",
80. "port": 9411
81. },
82. "timestamp": 1458702548799000,
83. "value": "cr"
84. }
85. ],
86. "binaryAnnotations": [
87. {
88. "key": "jdbc.query",
89. "value": "select distinct `zipkin_spans`.`trace_id` from `zipkin_spans` join `zipkin_annotations` on (`zipkin_spans`.`trace_id` = `zipkin_annotations`.`trace_id` and `zipkin_spans`.`id` = `zipkin_annotations`.`span_id`) where (`zipkin_annotations`.`endpoint_service_name` = ? and `zipkin_spans`.`start_ts` between ? and ?) order by `zipkin_spans`.`start_ts` desc limit ?",
90. "endpoint": {
91. "serviceName": "zipkin-query",
92. "ipv4": "192.168.1.2",
93. "port": 9411
94. }
95. },
96. {
97. "key": "sa",
98. "value": true,
99. "endpoint": {
100. "serviceName": "spanstore-jdbc",
101. "ipv4": "127.0.0.1",
102. "port": 3306
103. }
104. }
105. ]
106. },
107. {
108. "traceId": "bd7a977555f6b982",
109. "name": "query",
110. "id": "13038c5fee5a2f2e",
111. "parentId": "ebf33e1a81dc6f71",
112. "timestamp": 1458702548817000,
113. "duration": 1000,
114. "annotations": [
115. {
116. "endpoint": {
117. "serviceName": "zipkin-query",
118. "ipv4": "192.168.1.2",
119. "port": 9411
120. },
121. "timestamp": 1458702548817000,
122. "value": "cs"
123. },
124. {
125. "endpoint": {
126. "serviceName": "zipkin-query",
127. "ipv4": "192.168.1.2",
128. "port": 9411
129. },
130. "timestamp": 1458702548818000,
131. "value": "cr"
132. }
133. ],
134. "binaryAnnotations": [
135. {
136. "key": "jdbc.query",
137. "value": "select `zipkin_spans`.`trace_id`, `zipkin_spans`.`id`, `zipkin_spans`.`name`, `zipkin_spans`.`parent_id`, `zipkin_spans`.`debug`, `zipkin_spans`.`start_ts`, `zipkin_spans`.`duration` from `zipkin_spans` where `zipkin_spans`.`trace_id` in (?)",
138. "endpoint": {
139. "serviceName": "zipkin-query",
140. "ipv4": "192.168.1.2",
141. "port": 9411
142. }
143. },
144. {
145. "key": "sa",
146. "value": true,
147. "endpoint": {
148. "serviceName": "spanstore-jdbc",
149. "ipv4": "127.0.0.1",
150. "port": 3306
151. }
152. }
153. ]
154. },
155. {
156. "traceId": "bd7a977555f6b982",
157. "name": "query",
158. "id": "37ee55f3d3a94336",
159. "parentId": "ebf33e1a81dc6f71",
160. "timestamp": 1458702548827000,
161. "duration": 2000,
162. "annotations": [
163. {
164. "endpoint": {
165. "serviceName": "zipkin-query",
166. "ipv4": "192.168.1.2",
167. "port": 9411
168. },
169. "timestamp": 1458702548827000,
170. "value": "cs"
171. },
172. {
173. "endpoint": {
174. "serviceName": "zipkin-query",
175. "ipv4": "192.168.1.2",
176. "port": 9411
177. },
178. "timestamp": 1458702548829000,
179. "value": "cr"
180. }
181. ],
182. "binaryAnnotations": [
183. {
184. "key": "jdbc.query",
185. "value": "select `zipkin_annotations`.`trace_id`, `zipkin_annotations`.`span_id`, `zipkin_annotations`.`a_key`, `zipkin_annotations`.`a_value`, `zipkin_annotations`.`a_type`, `zipkin_annotations`.`a_timestamp`, `zipkin_annotations`.`endpoint_ipv4`, `zipkin_annotations`.`endpoint_port`, `zipkin_annotations`.`endpoint_service_name` from `zipkin_annotations` where `zipkin_annotations`.`trace_id` in (?) order by `zipkin_annotations`.`a_timestamp` asc, `zipkin_annotations`.`a_key` asc",
186. "endpoint": {
187. "serviceName": "zipkin-query",
188. "ipv4": "192.168.1.2",
189. "port": 9411
190. }
191. },
192. {
193. "key": "sa",
194. "value": true,
195. "endpoint": {
196. "serviceName": "spanstore-jdbc",
197. "ipv4": "127.0.0.1",
198. "port": 3306
199. }
200. }
201. ]
202. }
203. ]