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Original file line number | Diff line number | Diff line change |
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package quickfix | ||
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import "github.com/quickfixgo/quickfix/config" | ||
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const ( | ||
WildcardPattern string = "*" | ||
) | ||
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type AcceptorSessionProvider interface { | ||
GetSession(SessionID) (*session, error) | ||
} | ||
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type StaticAcceptorSessionProvider struct { | ||
sessions map[SessionID]*session | ||
} | ||
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func (p *StaticAcceptorSessionProvider) GetSession(sessionID SessionID) (*session, error) { | ||
s, ok := p.sessions[sessionID] | ||
if !ok { | ||
return nil, errUnknownSession | ||
} | ||
return s, nil | ||
} | ||
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// DynamicAcceptorSessionProvider dynamically defines sessions for an acceptor. This can be useful for | ||
// applications like simulators that want to accept any connection and | ||
// dynamically create an associated session. | ||
// | ||
// For more complex situations, you can use this class as a starting | ||
// point for implementing your own AcceptorSessionProvider. | ||
type DynamicAcceptorSessionProvider struct { | ||
settings *Settings | ||
messageStoreFactory MessageStoreFactory | ||
logFactory LogFactory | ||
sessionFactory *sessionFactory | ||
application Application | ||
templateMappings []*TemplateMapping | ||
} | ||
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func NewDynamicAcceptorSessionProvider(settings *Settings, messageStoreFactory MessageStoreFactory, logFactory LogFactory, | ||
application Application, templateMappings []*TemplateMapping, | ||
) *DynamicAcceptorSessionProvider { | ||
return &DynamicAcceptorSessionProvider{ | ||
settings: settings, | ||
messageStoreFactory: messageStoreFactory, | ||
logFactory: logFactory, | ||
sessionFactory: &sessionFactory{}, | ||
application: application, | ||
templateMappings: templateMappings, | ||
} | ||
} | ||
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func (p *DynamicAcceptorSessionProvider) FindTemplateID(sessionID SessionID) *SessionID { | ||
return p.lookupTemplateID(sessionID) | ||
} | ||
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func (p *DynamicAcceptorSessionProvider) GetSession(sessionID SessionID) (*session, error) { | ||
s, ok := lookupSession(sessionID) | ||
if !ok { | ||
templateID := p.lookupTemplateID(sessionID) | ||
if templateID == nil { | ||
return nil, errUnknownSession | ||
} | ||
dynamicSessionSettings := p.settings.globalSettings.clone() | ||
templateSettings := p.settings.sessionSettings[*templateID] | ||
dynamicSessionSettings.overlay(templateSettings) | ||
dynamicSessionSettings.Set(config.BeginString, sessionID.BeginString) | ||
dynamicSessionSettings.Set(config.SenderCompID, sessionID.SenderCompID) | ||
dynamicSessionSettings.Set(config.SenderSubID, sessionID.SenderSubID) | ||
dynamicSessionSettings.Set(config.SenderLocationID, sessionID.SenderLocationID) | ||
dynamicSessionSettings.Set(config.TargetCompID, sessionID.TargetCompID) | ||
dynamicSessionSettings.Set(config.TargetSubID, sessionID.TargetSubID) | ||
dynamicSessionSettings.Set(config.TargetLocationID, sessionID.TargetLocationID) | ||
var err error | ||
s, err = p.sessionFactory.createSession(sessionID, | ||
p.messageStoreFactory, | ||
dynamicSessionSettings, | ||
p.logFactory, | ||
p.application, | ||
) | ||
if err != nil { | ||
return nil, err | ||
} | ||
} | ||
return s, nil | ||
} | ||
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func (provider *DynamicAcceptorSessionProvider) lookupTemplateID(sessionID SessionID) *SessionID { | ||
for _, mapping := range provider.templateMappings { | ||
if isTemplateMatching(mapping.Pattern, sessionID) { | ||
return &mapping.TemplateID | ||
} | ||
} | ||
return nil | ||
} | ||
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func isTemplateMatching(pattern SessionID, sessionID SessionID) bool { | ||
return matches(pattern.BeginString, sessionID.BeginString) && | ||
matches(pattern.SenderCompID, sessionID.SenderCompID) && | ||
matches(pattern.SenderSubID, sessionID.SenderSubID) && | ||
matches(pattern.SenderLocationID, sessionID.SenderLocationID) && | ||
matches(pattern.TargetCompID, sessionID.TargetCompID) && | ||
matches(pattern.TargetSubID, sessionID.TargetSubID) && | ||
matches(pattern.TargetLocationID, sessionID.TargetLocationID) | ||
} | ||
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func matches(pattern string, value string) bool { | ||
return WildcardPattern == pattern || pattern == value | ||
} | ||
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// TemplateMapping mapping from a sessionID pattern to a session template ID. | ||
type TemplateMapping struct { | ||
Pattern SessionID | ||
TemplateID SessionID | ||
} |
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