George McIntyre
92 lines
3.4 KiB
C++
92 lines
3.4 KiB
C++
/*
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* Copyright - See the COPYRIGHT that is included with this distribution.
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* pvxs is distributed subject to a Software License Agreement found
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* in file LICENSE that is included with this distribution.
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*
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* Author George S. McIntyre <george@level-n.com>, 2023
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*
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*/
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#ifndef PVXS_GROUPSOURCE_H
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#define PVXS_GROUPSOURCE_H
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#include "dbeventcontextdeleter.h"
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#include "groupsrcsubscriptionctx.h"
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#include "iocserver.h"
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#include "iocsource.h"
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#include "securityclient.h"
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namespace pvxs {
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namespace ioc {
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class GroupSource : public server::Source {
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public:
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GroupSource();
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void onCreate(std::unique_ptr<server::ChannelControl>&& channelControl) final;
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/**
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* Implementation of the onList() interface of pvxs::server::Source to return a list of all records
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* managed by this source.
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*
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* @return all records managed by this source
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*/
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List onList() final {
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return allRecords;
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}
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void onSearch(Search& searchOperation) final;
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void show(std::ostream& outputStream) final;
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private:
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// List of all database records that this single source serves
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List allRecords;
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// The event context for all subscriptions
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DBEventContext eventContext;
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// Create request and subscription handlers for single record sources
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void createRequestAndSubscriptionHandlers(std::unique_ptr<server::ChannelControl>& channelControl,
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Group& group);
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// Handles all get, put and subscribe requests
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static void onOp(Group& group, std::unique_ptr<server::ConnectOp>&& channelConnectOperation);
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//////////////////////////////
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// Get
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//////////////////////////////
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static void get(Group& group, std::unique_ptr<server::ExecOp>& getOperation);
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static void groupGet(Group& group, const std::function<void(Value&)>& returnFn,
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const std::function<void(const char*)>& errorFn);
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static bool getGroupField(const Field& field, Value valueTarget, const std::string& groupName,
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const std::function<void(const char*)>& errorFn);
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//////////////////////////////
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// Put
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//////////////////////////////
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static void putGroup(Group& group, std::unique_ptr<server::ExecOp>& putOperation, const Value& value,
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const GroupSecurityCache& groupSecurityCache);
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//////////////////////////////
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// Subscriptions
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//////////////////////////////
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// Called when values are requested by a subscription
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static void
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subscriptionValueCallback(void* userArg, dbChannel* pDbChannel, int eventsRemaining, db_field_log* pDbFieldLog);
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static void
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subscriptionPropertiesCallback(void* userArg, dbChannel* pDbChannel, int eventsRemaining,
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db_field_log* pDbFieldLog);
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static void
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subscriptionCallback(FieldSubscriptionCtx* fieldSubscriptionCtx,
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GetOperationType getOperationType, struct db_field_log* pDbFieldLog);
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static void onDisableSubscription(const std::shared_ptr<GroupSourceSubscriptionCtx>& groupSubscriptionCtx);
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static void onStartSubscription(const std::shared_ptr<GroupSourceSubscriptionCtx>& groupSubscriptionCtx);
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void onSubscribe(const std::shared_ptr<GroupSourceSubscriptionCtx>& groupSubscriptionCtx,
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std::unique_ptr<server::MonitorSetupOp>&& subscriptionOperation) const;
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static void onStart(const std::shared_ptr<GroupSourceSubscriptionCtx>& groupSubscriptionCtx, bool isStarting);
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static void putGroupField(const Value& value, const Field& field, const SecurityClient& securityClient);
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};
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} // ioc
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} // pvxs
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#endif //PVXS_GROUPSOURCE_H
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