![Protocol Stack - libmodbus
modbus_t *mb;
uint16_t tab_reg[32];
mb = modbus_new_tcp("127.0.0.1", 1502);
modbus_connect(mb);
/* Read 5 registers from the address 0 */
modbus_read_registers(mb, 0, 5, tab_reg);
modbus_close(mb);
modbus_free(mb);](https://image.slidesharecdn.com/20161027-edgepro-part2-240319193239-31b5c47a/85/20161027-edge-part2-8-320.jpg)
![Protocol Stack - libmodbus
modbus_t *mb;
uint16_t tab_reg[32];
mb = modbus_new_tcp("127.0.0.1", 1502);
modbus_connect(mb);
/* Read 5 registers from the address 0 */
modbus_read_registers(mb, 0, 5, tab_reg);
modbus_close(mb);
modbus_free(mb);
The modbus_t context is an opaque
structure containing all necessary
information to establish a connection
with others Modbus devices
according to the selected variant](https://image.slidesharecdn.com/20161027-edgepro-part2-240319193239-31b5c47a/85/20161027-edge-part2-9-320.jpg)
![Protocol Stack - libmodbus
modbus_t *mb;
uint16_t tab_reg[32];
mb = modbus_new_tcp("127.0.0.1", 1502);
modbus_connect(mb);
/* Read 5 registers from the address 0 */
modbus_read_registers(mb, 0, 5, tab_reg);
modbus_close(mb);
modbus_free(mb);
The modbus_t context is an opaque
structure containing all necessary
information to establish a connection
with others Modbus devices
according to the selected variant
以Modbus TCP為例，
實際的實作就是TCP Socket，
Modbus Master就是TCP Client，
Modbus Slave就是TCP Server](https://image.slidesharecdn.com/20161027-edgepro-part2-240319193239-31b5c47a/85/20161027-edge-part2-10-320.jpg)
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20161027 - edge part2
- 1. Design of Proactive Modbus Services 2016/10/27 Taka Wang
- 2. Problem Domain modbus slave modbus slave modbus slave Node-Red Web portal Cloud PaaS
- 3. Problem Domain ? 由HMI觸發Modbus資料讀寫 ? 主動回報Modbus資料的數值變化 ? 支 援不同類型的數值解讀 ? 支 援多個Slave的讀寫 ? 紀錄Modbus資料的歷史紀錄 modbus slave modbus slave modbus slave Node-Red Web portal Cloud PaaS
- 4. Modbus is a master-slave/ request-reply protocol Modbus RTU Master Modbus RTU Slave Modbus TCP Client Modbus TCP Server Serial TCP
- 5. Modbus is a master-slave/ request-reply protocol Modbus RTU Master Modbus RTU Slave Modbus TCP Client Modbus TCP Server request request Serial TCP
- 6. Modbus is a master-slave/ request-reply protocol Modbus RTU Master Modbus RTU Slave Modbus TCP Client Modbus TCP Server request request response response Serial TCP
- 7. Modbus Working Model Master Slave Registers 1. 對哪個 Slave 2. 的哪些 Registers (從哪開始，多長) 3. 做什麼操作(R/W)
- 8. Protocol Stack - libmodbus modbus_t *mb; uint16_t tab_reg[32]; mb = modbus_new_tcp("127.0.0.1", 1502); modbus_connect(mb); /* Read 5 registers from the address 0 */ modbus_read_registers(mb, 0, 5, tab_reg); modbus_close(mb); modbus_free(mb);
- 9. Protocol Stack - libmodbus modbus_t *mb; uint16_t tab_reg[32]; mb = modbus_new_tcp("127.0.0.1", 1502); modbus_connect(mb); /* Read 5 registers from the address 0 */ modbus_read_registers(mb, 0, 5, tab_reg); modbus_close(mb); modbus_free(mb); The modbus_t context is an opaque structure containing all necessary information to establish a connection with others Modbus devices according to the selected variant
- 10. Protocol Stack - libmodbus modbus_t *mb; uint16_t tab_reg[32]; mb = modbus_new_tcp("127.0.0.1", 1502); modbus_connect(mb); /* Read 5 registers from the address 0 */ modbus_read_registers(mb, 0, 5, tab_reg); modbus_close(mb); modbus_free(mb); The modbus_t context is an opaque structure containing all necessary information to establish a connection with others Modbus devices according to the selected variant 以Modbus TCP為例， 實際的實作就是TCP Socket， Modbus Master就是TCP Client， Modbus Slave就是TCP Server
- 11. Toward a microservice model ? 由HMI觸發Modbus資料讀寫 ? 主動回報Modbus資料的數值變化 ? 支 援不同類型的數值解讀 ? 支 援多個Slave的讀寫 ? 紀錄Modbus資料的歷史紀錄 modbus slave modbus slave modbus slave Node-Red Web portal Cloud PaaS
- 12. Toward a microservice model ? 由HMI觸發Modbus資料讀寫 ? 主動回報Modbus資料的數值變化 ? 支 援不同類型的數值解讀 ? 支 援多個Slave的讀寫 ? 紀錄Modbus資料的歷史紀錄 modbus slave modbus slave modbus slave Node-Red Web portal Cloud PaaS Loose Coupling High Cohesion
- 13. Toward a microservice model ? 由HMI觸發Modbus資料讀寫 ? 主動回報Modbus資料的數值變化 ? 支 援不同類型的數值解讀 ? 支 援多個Slave的讀寫 ? 紀錄Modbus資料的歷史紀錄 modbus slave modbus slave modbus slave Node-Red Web portal Cloud PaaS Loose Coupling High Cohesion De fi ne bounded context (BC)
- 14. De fi ne boundary ? 由HMI觸發Modbus資料讀寫 ? 主動回報Modbus資料的數值變化 ? 支 援不同類型的數值解讀 ? 支 援多個Slave的讀寫 ? 紀錄Modbus資料的歷史紀錄
- 15. De fi ne boundary Modbus Master ? 由HMI觸發Modbus資料讀寫 ? 主動回報Modbus資料的數值變化 ? 支 援不同類型的數值解讀 ? 支 援多個Slave的讀寫 ? 紀錄Modbus資料的歷史紀錄
- 16. De fi ne boundary Modbus Master Modbus Master ? 由HMI觸發Modbus資料讀寫 ? 主動回報Modbus資料的數值變化 ? 支 援不同類型的數值解讀 ? 支 援多個Slave的讀寫 ? 紀錄Modbus資料的歷史紀錄
- 17. De fi ne boundary Modbus Master Modbus Master Scheduler ? 由HMI觸發Modbus資料讀寫 ? 主動回報Modbus資料的數值變化 ? 支 援不同類型的數值解讀 ? 支 援多個Slave的讀寫 ? 紀錄Modbus資料的歷史紀錄
- 18. De fi ne boundary Modbus Master Modbus Master Scheduler ? 由HMI觸發Modbus資料讀寫 ? 主動回報Modbus資料的數值變化 ? 支 援不同類型的數值解讀 ? 支 援多個Slave的讀寫 ? 紀錄Modbus資料的歷史紀錄 Database
- 19. De fi ne boundary Modbus Master Modbus Master Scheduler ? 由HMI觸發Modbus資料讀寫 ? 主動回報Modbus資料的數值變化 ? 支 援不同類型的數值解讀 ? 支 援多個Slave的讀寫 ? 紀錄Modbus資料的歷史紀錄 Database Data Converter
- 20. De fi ne boundary Modbus Master Modbus Master Scheduler ? 由HMI觸發Modbus資料讀寫 ? 主動回報Modbus資料的數值變化 ? 支 援不同類型的數值解讀 ? 支 援多個Slave的讀寫 ? 紀錄Modbus資料的歷史紀錄 Database Data Converter Data Filter
- 21. De fi ne boundary Modbus Master Modbus Master Scheduler ? 由HMI觸發Modbus資料讀寫 ? 主動回報Modbus資料的數值變化 ? 支 援不同類型的數值解讀 ? 支 援多個Slave的讀寫 ? 紀錄Modbus資料的歷史紀錄 Database Data Converter Web Server Data Filter
- 22. De fi ne boundary Modbus Master Modbus Master Scheduler ? 由HMI觸發Modbus資料讀寫 ? 主動回報Modbus資料的數值變化 ? 支 援不同類型的數值解讀 ? 支 援多個Slave的讀寫 ? 紀錄Modbus資料的歷史紀錄 Database Data Converter Web Server MQTT Client Data Filter
- 23. Proposal 2016.05 Proactive Server Golang/C/Python Restful Service Node.js/Golang MQTT Client Golang/C OPC-UA Server Java/C Node Red Typescript Web GUI Typescript/ HTML5 Modbus TCP Master Libmodbus/C Websocket Service Node.js/Golang Persistence MQTT OPC-UA
- 24. mb-web psmb modbusd Services Mgr. Modbus Master Scheduler Database Adapter Data Converter REST WEB Server Data Filter IPC IPC IPC mb-socket MQTT Client IPC c-modbus-slave Modbus Slave https://github.com/taka-wang/modbusd https://github.com/taka-wang/c-modbus-slave https://github.com/taka-wang/psmb https://github.com/taka-wang/mb-socket https://github.com/taka-wang/mb-web
- 25. Different Model Extract from MS IoT Expo 2016
- 27. Docker & CI ? Docker container - single process service. separate of concern. ? Public CI Server - Travis, CircleCI, Jenkins, Drone, and so on. ? 重現性， 自 動化，持續改善。
- 28. drone server drone agent dockerhub consul.cmwang.net drone.cmwang.net taka-wang git repository SaaS code push trigger ci poll task push pull consul
- 29. Design Principles ? Pluggable package Design ? Object-oriented Design ? Contract-First Design ? API-First Design ? Test-Driven Design ? Microservice Design/ Container ready ? 12-Factor App Design ? Documentations
- 30. Implementations
- 31. Modbusd
- 32. Proactive Service ? IProactiveService: proactive service ? IReaderTaskDataStore: read/poll task data store ? IWriterTaskDataStore: write task data store ? IHistoryDataStore: history data store ? IFilterDataStore: fi lter data store ? ICon fi g: con fi g management Interfaces
- 35. How to design mb-web and mb-socket?
- 36. mb-web & mb-socket router worker con fi guration con fi guration dependency injection separate of concern go channel
- 37. REST Testing
- 38. REST Testing
- 39. REST Testing
- 40. REST Testing
- 41. More details
- 42. Smart Con fi guration ? Setting defaults ? Reading from JSON, TOML, YAML ? Reading from remote con fi g server ? Setting explicit values
- 44. Logger ? Structural logger ? To File, Color Console ? JSON format ? Singleton Pattern log.Infof("uploading %q for %s", filename, user.ID) log.Info(log.Fields{ "file": filename, "user": user.ID, }).Info("upload")
- 45. Some snapshots
- 46. CI in Action
- 47. Docker hub Link
- 48. Circle CI
- 49. Travis CI
- 50. Drone for armhf
- 51. OpenAPI Document
- 53. Go Document Link
- 54. UML Full Size
- 55. Try It ? git clone https://github.com/taka-wang/mb- web.git ? cd mb-web ? docker-compose -f docker-compose.x86 up ? import node-red example (http://localhost:1880) https://raw.githubusercontent.com/taka-wang/mb-web/master/docs/node-red.json
- 56. Thank you