NOTE: As of now, this page contents are copied from Casablanca PoC. It will be updated for Dublin shortly.

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This is a PostgreSQL DB, and is intended to persist information such as the following:

• PCI-Handler MS Config information (e.g., thresholds, timer values, OOF algorithm name, etc.)
• Pre-processing results and other related information (e.g., neighbor list)
• Buffered notifications (i.e., notifications not yet processed at all)
• State information
• Association between pnf-name and CellId

1.3. DMaaP Client

This is responsible for registering with the DMaaP client for the DMaaP notifications from SDN-R, and to Policy.

2. Core Logic components and Pre-processing algorithm

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The state transition diagram is illustrated below: Gliffynamemain_threadpagePin6

The main actions in the various states are listed below:

2.1.1. Initialization

In this state, the following actions are performed:

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Upon receiving a terminate request clean up all resources.

2.2. Child Thread(s)

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2.2.1 Initialization

In this state, perform initialization, and transition to Cluster formation state.

2.2.2. Cluster formation

• Store details of the cell (which sent the neighbor list change notification) and its neighbors in DB.
• For each of the neighbors, fetch the neighbor list (via REST API) from SDN-R Config DB (i.e., fetch neighbor of neighbors of the cell that sent the neighbor list change notification).
• Form a cluster with the cell, its neighbors and neighbors of each of the neighbors.
• Assign a cluster id.
• Determine collision/confusion by calling method determine_collision_confusion.
• Based on number of collisions/confusions and config policy, determine if OOF has to be triggered or more notifications should be awaited (handle also timeout case).

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