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Request for Top Level Categories

Client fires an Ajax request to the confluence server. Confluence server collects category information from all LASes in the system. Request for Top Level Categories. ESG Gateway Node. Confluence Server. F-TDS. LAS. Client wants to see all the top level categories available.

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Request for Top Level Categories

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  1. Client fires an Ajax request to the confluence server. Confluence server collects category information from all LASes in the system. Request for Top Level Categories ESG Gateway Node Confluence Server F-TDS LAS Client wants to see all the top level categories available. Confluence server returns combined results as one big JSON object. Product Requests Data Node 1 Data Node 2 LAS LAS Ajax Requests F-TDS F-TDS

  2. Request for the Grid of a Variable Client fires an Ajax request to the confluence server. Confluence server requests the info from the remote LAS. This avoids cross-site scripting problems. ESG Gateway Node Confluence Server F-TDS LAS Client needs the grid of a particular variable. Confluence server returns the requested grid JSON object. Product Requests Data Node 1 Data Node 2 LAS LAS Ajax Requests F-TDS F-TDS

  3. Request a product from a remote LAS: Client fires an LAS Product Request to the confluence server. Confluence Server directs the product request to the LAS server that holds the data. The remote LAS produces the product (including any analysis via F-TDS) and returns it to the confluence server. ESG Gateway Node Confluence Server F-TDS LAS User wants to see plot of one data variable. The confluence server returns the product to the client. Product Requests Data Node 1 Data Node 2 LAS LAS Ajax Requests F-TDS F-TDS

  4. Difference of two varaibles, two data nodes: Gateway LAS gets F-TDS URLs from remote LASes. Confluence Server forwards the product request to local LAS. Client fires an LAS Product Request to the confluence server. Gateway LAS gets data (including regridding) from remote F-TDSes. ESG Gateway Node Confluence Server F-TDS LAS Use wants to compare two variables from different data nodes. Gateway LAS makes product and returns it to the client. URL resolution Data Node 1 Data Node 2 Product Requests LAS LAS OPeNDAP Requests F-TDS F-TDS

  5. Notes • Capability for slides 1 – 3 is finished and ready to be tested. • Capability for slide 4 is still being built. • I think the Authentication and Authorization will be a call-out to the gateway from the “confluence server”.

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