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Phil (aka MP3Monster)'s Blog

~ from Technology to Music

Phil (aka MP3Monster)'s Blog

Tag Archives: IDCS

API Platform – Developer Portal Delegated Authentication

18 Monday Nov 2019

Posted by mp3monster in API Platform CS, Oracle, Technology

≈ 2 Comments

Tags

API, APIPlatformCS, Cloud Service, configuration, developer, federated, IDCS, login, OAuth, Oracle, portal

The API Platform when you configure IDCS to provide the option to authenticate users against a corporate Identity Provider such as Active Directory will automatically update the Management Portal Login screen accordingly. However today it doesn’t automatically update the Developer Portal login page.  Whilst perhaps an oversight, it is very easy to fix manually when you know how. As result you can have a login that looks like:

The rest of this blog will show what’s needed to fix the problem.

Continue reading →

Notifications from Oracle API Platform Cloud Service

11 Monday Nov 2019

Posted by mp3monster in API Platform CS, General, Oracle, Technology, tools

≈ 2 Comments

Tags

API, Cloud, CS, IDCS, Notifications, nudge, Oracle, Owasp, platform, slack, utility

There are circumstances in which notifications from the Oracle API Platform CS could be seen as desirable.  For example, if you wish to ensure that the developers are defining good APIs and not accidentally implementing APIs that hit the OWASP Top 10 for APIs. Then you will probably configure things such that developer users can design the APIs, configure the policies, but only request an API to be deployed.

However, presently notifications through mechanisms such as email or via collaboration platforms such as Slack aren’t available.  But implementing a solution isn’t difficult.  For the rest of this blog we’ll explore how this might be implemented, complete with a Slack implementation.

Continue reading →

Managing API Gateway Costs with Oracle API Platform

03 Wednesday Jul 2019

Posted by mp3monster in API Platform CS, APIs & microservices, General, Oracle, Technology

≈ 2 Comments

Tags

API, cost, gateway, Groovy, IDCS, Licensing, Oracle, scripting

The Oracle API Platform adopted an intelligent pricing model by basing costs on API call volumes and Logical gateway node groupings per hour. In our book about the API Platform (more here). We suggested that a good logical grouping would be to reflect the development, test, pre-production and production model. This makes it nice and easy to use gateway based routing to different environments without needing to change the API policy configuration as you promote your solution through environments.

We have also leveraged naming and Role/Group Based Access Controls to make it easy to operate the API Platform as a shared service, rather than each team having its own complete instance. In doing so the number of logical gateways needed is limited (I.e. not logical gateway divisions on per team models needed). Group management is very easy through the leveraging of Oracle’s Identity Cloud Service – which is free for managing users on the Oracle solutions, and also happens to a respected product in its own right.

Most organisations are not conducting development and testing 365 days a year, for 24 hours a day (yes in an ideal world prolonged soak and load tests would be run to help tease out cumulative issues such as memory leaks, but even then it isn’t perpetual). As a result, it would be ideal to not be using logical gateways for part of the day such as outside the typical development day, and weekends.

Whilst out of the out of hours traffic may drop to zero calls and we may even shutdown the gateway nodes, this alone doesn’t effectively reduce the number of logical gateways as the logical gateway aspect of the platform counts as soon as you create the logical group in the management portal. This in itself isn’t a problem as the API Platform drinks it’s own Champagne as the saying goes, and everything in the UI is actually available as a published REST endpoint. Something covered in the book, and in previous blog posts (for example Making Scripts Work with IDCS Deployed PaaS and Analytics and Stats for APIs). Rather than providing all the code, you can see pretty much all the calls necessary in the other utilities published.

Before defining the steps, there are a couple of things to consider. Firstly, the version of the API deployed to a specific logical gateway may not necessarily be the latest version (iteration) and when to delete the logical gateway this information is lost, so before deleting the logical gateway we should record this information to allow us to reinstate the logical gateway later.

As deleting logical gateways will remove the gateway from the system, when recreating the gateway we can use the same name, but the gateway is not guaranteed to get the same Id as before, as a result, we should when rebuilding always discover the Id from the name to be safe.

A logical gateway can not be deleted until all the physical nodes are reallocated, so we need to iterate through the nodes removing them. When it comes to reconnecting the nodes, this is a little more tricky as reconnecting the gateway appears to only be achievable with information known to the gateway node. Therefore the simplest thing is when bringing the node back online we take the information from the gateway-props.json file and run a script that determines whether the management tier knows about the node. If not then just re-run the create, start, join cycle., otherwise just run the start command.

As with the logical gateway, re-running the create, deploy, start cycle will result in the node having a new Id. This does mean that whilst the logical gateway name and even the node names will remain the same, the analytics data is likely to become unavailable, so you may wish to extract the analytics data. But then, for development and test, this data is unlikely to provide much long term value.

So based on this, our sequence for releasing the logical gateway needs to be…

  1. Capture the deployed APIs and the iteration numbers,
  2. Ideally shutdown the gateway node process itself,
  3. Delete all the gateway nodes from the logical gateway,
  4. Delete the logical gateway,

Recover would then be …

  1. Construct the logical gateway,
  2. Redeploy the APIs with the correct iteration numbers to the logical gateway using the recorded information- if no nodes are connected at this stage, the UI will provide a warning
  3. As gateway nodes, come back online, determine if it is necessary to execute the create, start, join or just start

Of course, these processes can be all linked to scheduling such as a cron job and/or server startup and shutdown processes.

Making Scripts Work with IDCS Deployed PaaS

09 Saturday Feb 2019

Posted by mp3monster in API Platform CS, APIs & microservices, General, Oracle, Technology, tools

≈ 5 Comments

Tags

API Platform, GitHub, Groovy, IDCS, OAuth, Script, tokens

A while back I made some utilities I developed to help with managing the API Platform. At the time we didn’t have access to an IDCS based environment, so credentials worked using basic auth (I.e. user name and password). But with environments managed by IDCS tokens are used.

As a developer with a Java background I have to admit to liking Groovy over Python for scripting, not to mention for the API Platform groovy is part of the gateway deployment and SDK. Meaning it is readily available in its 2.x form (3.x is relatively recent and aligning to the latest Java idioms). We haven’t tested against Groovy 3.0

Thank you to Andy Knight for sharing with us some Java code which I adapted to be pure Groovy (removing external dependencies for processing JSON). The result is a script that can be taken can be taken and worked into other scripts (which is what we have done for our previously provided scripts – Understanding API Deployment State on API Platform, Managing API Policy Versioning in Oracle API Platform, Documenting APIs on the Oracle API Platform). But this script can be used to get a token and display it on the command line or write it to file. Writing tokens to files is generally not good practise, but as a temporary measure when working on developing scripts arguably a managed risk.

The script can be found at https://github.com/mp3monster/API-Platform-Utils/tree/master/getToken and all the details on using the script can be obtained by passing -h as a parameter. The important thing is to understand how to obtain the Client ID and Client Secret, the details of which are described at https://docs.oracle.com/en/cloud/paas/api-platform-cloud/apfad/find-your-client-id-and-client-secret.html

Oracle Dev Meetup

24 Tuesday Apr 2018

Posted by mp3monster in Dev Meetup, General

≈ Leave a comment

Tags

Atul Kumar, dev, IDCS, identity, meetup, messaging, Oracle

Another month and another Meetup.  Last night was the quietest session we’ve had. But then we covered Identity Management and whilst the subject is so important it isn’t too popular.

Tanks to Atul Kumar for taking on the task of presenting on this subject.  You can find out more about Atul at:

  • Atul Kumar on LinkedIn
  • K21 Academy

The content covering use of Messaging Cloud and our drone project can be seen here:

Oracle Ace Director

TOGAF 9

Logging in Action

Oracle Cloud Integration Book

API Platform Book

Oracle Dev Meetup London

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