The WSO2 Governance Registry (G-Reg) is an SOA-integrated registry-repository for storing and managing data or metadata related to services and other artifacts. It consists of two Web-based interfaces: the G-Reg Publisher and G-Reg Store. The Publisher is used t o create and manage assets, while the Store is used to search for and subscribe to assets.
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Introducing the sample
BuyMore is a fictitious supermarket chain with more than 200 retail branches. Given below is a snapshot of the existing services of BuyMore with their lifecycle states:
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You now have sample services and other artifacts related to BuyMore along with two users (a developer called Smith and a DevOps engineer called Mark ) deployed in the G-Reg. Next, let's log in to the G-Reg Store as Smith and subscribe to an asset.
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Subscribing to an asset
Smith is a developer at BuyMore. Smith comes to the G-Reg Store searching for the asset BuyMoreBillCalculateRESTAPI version 1.0.0 to calculate bill values of the products being purchased at BuyMore. Smith can search for the asset using the following alternative methods.
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| title | Search using search bar |
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, and subscribes to it to receive notifications regarding any changes that happen to the asset later.
- Log in to the G-Reg Store (https://localhost:9443/store/) as Smith. Smith's credentials are smith/smith@bm.
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- Click Rest Services in the left menu.
- Search for the asset by typing "name:
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- BuyMoreBillCalculateRESTAPI" in the search field and clicking the search icon.
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| title | Search using filters |
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Smith can follow the steps below to search for the BuyMoreBillCalculateRESTAPI version 1.0.0 asset using the pre-defined search filters.
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- Expand the Teams filter in the Filter by menu, expand the Boston menu, and click the icon with the plus sign next to Think Tank to select it.
- Expand the DataCenters filter in the Filter by
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- menu, and click the icon with the plus sign next to Vancouver to select it.
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For more information, see the tutorial on Searching for Assets Using Filters. |
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Smith can follow the steps below to search for the
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Subscribing to an asset
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- The service
BuyMoreBillCalculateRESTAPIversion 1.0.0
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- The service
BuyMoreBillCalculateRESTAPIappears in the search results. Click it to open it.
The asset openopens. Scroll down to see the following links:
- Swagger UI: Opens a Swagger console where you can invoke the REST asset.
- Download: Downloads the Swagger definition of the REST asset to a given location in your machine.
- Copy URL: Gives you the option to copy the URL of the Swagger definition.
Smith has now discovered the REST asset that can be called from other applications to calculate bill values. Next, Smith subscribes to receive notifications for this asset. A notification is an alert that you get via email and/or the G-Reg Store regarding an asset's lifecycle and/or information change.
Click the ->OPTIONS button in the top right-hand corner of the screen to expand the notification settings.
You can subscribe to receive notifications through emails or through the G-Reg Store. You can also opt to receive notifications when an asset is changed and/or when it goes through a lifecycle state change.Enable the option to receive notifications related to lifecycle state changes via the G-Reg Store.
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- Log in to the G-Reg Publisher ( https://localhost:9443/publisher/ ) as Mark. Mark's credentials are mark/ mark@bm.
Use the following text to search for the service to be promoted to production, and then click the asset to open it.
name:BuyMoreBillCalculateRESTAPI version:2.0.0
Once the asset opens in the StorePublisher, go to its LIFECYCLE tab, add a comment to explain why you are changing its lifecycle state, and then click Promote .
Note that the lifecycle state of the service is changed from
TESTINGtoPRODUCTION, and the comment you added appears under history. Any user who goes to the LIFECYCLE tab of this service can see the comments history.
Now that a new version of the asset is in production, Mark deprecates the older version (i.e., version 1). This triggers an alert to Smith, who is subscribed to it to receive notifications.- Click the GOVERNANCE CENTER - PUBLISHER label at the top of the console to go to the publisher's Homepage, search for the term "BuyMoreBillCalculateRESTAPI", and click version 1.0.0 of the asset to open it.
Once the asset is opened, go to its LIFECYCLE tab and click Deprecate.
Note that the lifecycle state of the asset is updated successfully.
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- Sign in to the G-Reg Store (https://localhost:9443/store/) as Smith (smith/smith@bm).
- Click any one of the menus (such as REST Services) and note the new notification icon in the upper right-hand corner of the G-Reg Store.
- Click the icon to expand and read the notification.
Upon seeing the notification, Smith searches for a new version of the asset.In the G-Reg Store, click the BuyMore tag under the Tags section. - Log in to the G-Reg Store (https://localhost:9443/store/) as Smith. Smith's credentials are smith/smith@bm.
- Click Rest Services in the left menu.
- Search for the asset by typing "name:BuyMoreBillCalculateRESTAPI" in the search field and clicking the search icon.
- Select java under Language in the Refine by menu.
- Select gold under Throttling Tier in the Refine by menu.
The service
BuyMoreBillCalculateRESTAPIversion 2.0.0appears in the search results. Click it to open it.
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Alternatively, you can search for an asset using |
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tags.
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Reviewing the new version of the asset
In the previous step, Smith opened BuyMoreBillCalculateRESTAPI Version 2.0.0 in the G-Reg Store.
- Go to the User Reviews tab of the asset and add a rating (let's say 5). Also add a review comment (such as "This version of the asset is recommended as it implements the company's new loyalty scheme"), and then click Post Review.
- Note that the review that Smith just added appears on the console, under the NEWEST category. You can filter reviews according to popularity and the date added.
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