Research on Mission Hot-Swapping and Dynamic Replacement Mechanism of Mission Component

Abstract

It's urgently necessary for many mission-critical systems with high availability to implement online updating, fault recovery and environmental adaptability of software. Therefore, the idea of mission hot-swapping is proposed, in which, related problems and key technologies of mission component's dynamic replacement is analyzed. A dynamic replacement mechanism of mission component based on interceptor and component container is put forward. The research results show that the dynamic replacement of mission component is feasible and the idea of mission hotswapping is correct.

Dynamic software updating: a systematic mapping study

“…Also, number of authors have highlighted additional DSU approaches including dynamic replacement [22, 54, 66, 75, 86, 92, 93 ], dynamic instrumentation [52, 59, 60, 74, 84, 94 ], dynamic linking [37, 39, 53, 75, 83, 85 ], lust‐in‐time compilation [30, 44, 55, 58, 76, 95 ], wrapper [4, 40, 42, 44, 52 ], dynamic aspect‐oriented [35, 41, 50, 96, 97 ], extension of features [98, 99 ], dynamic adaptation [43, 59 ], rolling update [84 ], object transformer [49 ], data‐driven programming [92 ], distributed DSU [38 ], dynamic core library update [56 ], using run time to support DSU [92 ], procedure‐oriented [30 ], micro‐language‐based [100 ], and dynamic rebinding [5 ].…”

“…Current techniques to define statesA number of studies have demonstrated 12 techniques to define states in DSU including state transformer [45, 73, 83, 95, 115 ], formalise as state machine [9, 61, 83, 120 ], adaptation [41, 65 ], prepare ready tainted states [101 ], state convergence algorithm [126 ], state‐based specification language [83 ], enforcing restrictions [116 ], model checkers [83 ], using check points [37 ], custom state transfer [116 ], convert states bi‐directionally [42 ], and event‐based [66 ]. C. Existing techniques to transfer states in DSUBefore we list the identified states transformations techniques, it is interesting to mention number of techniques utilised in DSU to assist in states transformations in the selected primary studies, the techniques are including wrappers [16, 22, 43, 46, 52, 77, 94, 95 ], adaptation [4, 38, 41, 43, 59, 100, 129 ], refactoring [47, 50, 55, 74, 86, 99, 123 ], proxies [41, 46, 53, 113, 119, 131 ], class loaders [55, 85, 86, 123 ], in‐Place Proxification [43, 55, 91 ], adjustment [41, …”

“…Also, as demonstrated in the selected primary studies, other techniques are utilised to support states transformations including virtual classes [116 ], XML‐based configuration [68 ], meta‐object protocol [35 ], Object Translation Table [86 ], type name map file [80 ], type conversion file [80 ], position‐independent code [53 ], relocatable code [53 ]. symbol resolution [53 ], interface code file [80 ], and producer/consumer pattern [118 ], modular solution [54 ], introspection [99 ], pre‐compile [4 ], reconfiguration scheduler [67 ], Object replacement [105 ], shared libraries [53 ], and function cloning [78 ].…”

“…For the states transformations, a group of studies have highlighted state transformation techniques in DSU including state mapping [9, 16, 43, 51, 52, 60, 94, 101, 104, 115, 122, 128 ], transformation function [9, 36, 37, 41, 43, 83, 91, 95, 131 ], state migration [52, 55, 105, 114 ], targeted object synthesis [9, 35, 36 ], relinking [29, 117 ], primitive support [39, 116 ], synchronisation [93, 116 ], and dynamic loading [86, 91 ].…”

“…Existing techniques to transfer states in DSUBefore we list the identified states transformations techniques, it is interesting to mention number of techniques utilised in DSU to assist in states transformations in the selected primary studies, the techniques are including wrappers [16, 22, 43, 46, 52, 77, 94, 95 ], adaptation [4, 38, 41, 43, 59, 100, 129 ], refactoring [47, 50, 55, 74, 86, 99, 123 ], proxies [41, 46, 53, 113, 119, 131 ], class loaders [55, 85, 86, 123 ], in‐Place Proxification [43, 55, 91 ], adjustment [41, 68 ], reflection [85, 86 ], and publisher subscriber pattern [66, 121 ].Also, as demonstrated in the selected primary studies, other techniques are utilised to support states transformations including virtual classes [116 ], XML‐based configuration [68 ], meta‐object protocol [35 ], Object Translation Table [86 ], type name map file [80 ], type conversion file [80 ], position‐independent code [53 ], relocatable code [53 ]. symbol resolution [53 ], interface code file [80 ], and producer/consumer pattern [118 ], modular solution [54 ], introspection [99 ], pre‐compile [4 ], reconfigura...…”