Validation

• At startup time the M2MBridge validates it configuration with the cloud is an error occurrences the application aborts
• To simplify the process of validation configuration there is an option at Sensor network to validate a configuration for a M2MBridge instance

• Bridge type must produce crud observations (Check on thing type)
• Bridge instance must be valid for its metadata (and all its links too)
• When adding observation production config, thing types must be one of the types of the bridgeInstances
• All thing types configured to produce observations must have at least one observation type that they produce in the config (targe things is not required though)
• Topics in config cannot be empty
• Topics in config must start with an explicit topic, and may have placeholders only after that (Ex. /topic1/…./#{deviceId}/…)
• Topics in config must have a root topic owned by the creator of the activity (this validation only applies for creators)
• There must be instances in the bridgeInstances for all types that produce observations (it is not doable via UI, only via DAP)
• All links explicitly included in the property bridgeInstances
• Clone can be performed (access to external links used in proximityArea)

12- Validate aggregation types (there must be at least one instance in bridgeInstances for those types in the aggregationTypes) warning if the bridge has no property aggtypes (not via UI) 13- Validate aggregation instances (instances in aggregationInstances must be included in the bridgeInstances) warning if the bridge has no property aggInstances (not via UI) 14- A bridge may have bridge instances whose type is not configured to produce observations (ex. Instances behind the bridge that will only receive command, not send any observation) 15- A bridge may be valid without having observation production (ex. A bridge with instances that receives commands only) 16- Do not allow to configure crud inside bridge obs production 17- If follower, validate it has access for types used in AggregationTypes and AggregationInstances 18- Share bridge observationProduction with the bridge guest tenant and guest users when the bridge is validated 19- Warning when there is no obs to validate (just warning, it may be that the creator added the obs production after sharing the bridge, but did not validate , and then the follower validates) Network errors Only one bridge in the network can be “aggregator” for a type (ex. BLEbeaconsScanner) A bridge can not be aggregator and aggregator source aggregator of type Reader => bridge has the type Reader in its aggregationTypes) Aggregator source => bridge has the instance Reader1 in its aggregationInstances

Note : Validation can be performed selecting multiple bridges, with the goal of getting validation errors for the network of bridges being validated