Attachments (including meeting recording)
private group aai-dev on Rocketchat server: http://onap-integration.eastus.cloudapp.azure.com:3000/group/aai-dev
|AAI Tutorial updates|
Following updates for AAI Developer Environment Setup - Casablanca need to update the link in step 14:
Harish will update the documentation - the section Tutorial: Making and Testing a Schema Change in A&AI
Need to distinguish on the wiki tutorials for:
James Forsyth will check if we still need to support HEAT deployment for Dublin
|aai-cassandra performance issues||Keong Lim|
Michael O'Brien has documented performance issues in aai-cassandra:
hector has discovered that the stress test jar (liveness probe?) in aai-cassandra is hammering the cpu/ram/hd on the vm that aai is on - this breaks the etcd cluster (not the latency/network issues we suspected that may cause pod rescheduling)
Is there something that should be tweaked in AAI config? Or documentation on the recommended setup to run the VM?
I'll come to the next AAI meet (conflicts with pomba meet) -
|29th Nov 2018|
Discuss about the Schema Microservice
11th Oct: Suggested Use Case Proposals for Dynamic AAI Schema Changes based on CCVPN usecase experience
8th Nov: Added AAI Schema Service Use Case Proposals for discussion and planning
15th Nov: Reviewed the Requirements section in AAI Schema Service again.
|29th Nov 2018|
Looks like an API to reflect on the schema from an instance in the database.
Is there some overlap with the AAI Schema Services?
Is this leveraging AAI Schema Services e.g. as client? proxy? facade? implementation detail?
Is it an alternative to AAI Schema Services?
Update: Keong Lim I do see an overlap with the schema service mainly for the retrieval of the data, but GraphgGraph will offer more on top of that(UI, NLP), during the POC code for GraphGaph there was no schema service. Implementation details can be discussed on our call for how exactly to leverage the schema service, the poc code, and where the core logic resides for this functionality.
Do we need the “production” profile?
Pavel Paroulek - creating JIRA task to remove the profile (resources, traversal, cacher, graphadmin, oom, testconfig, schema-service)
|AAI HAProxy and 2-way-TLS|
Technical solution to either decommission the proxy or make design changes to AAF to enable client side certificates.
After VF2F we will know if this is a requirement in Dublin. We discuss after this date.
question raised: MSB - would client authentication be supported?
|Some of our top level OOM deployment artifacts are not unique (i.e. don’t take namespace into account as all other deployables), is that intentional?|
|Return codes and messages for WS|
|Is there a guide for the description of the error message and the error codes? How are new error states (message + code) added?|
|Copyright license header restricted to 1 company|
In the copyright
* Copyright © 2017-2018 AT&T Intellectual Property. All rights reserved.
If there is a company other than AT&T the build fails saying the license header is wrong
|AAI Traversal queries|
|The AAI Traversal API is fairly complex, are there examples and descriptions of what the inputs and outputs of the rest api are, or alternative way to gain know-how? Code is quite difficult to read.|
|AAI test data bootstrap||Keong Lim|
Similarly, Scott Seabolt and J Armstrong / Joss Armstrong wrote for APPC Sample A&AI Data Setup for vLB/vDNS for APPC Consumption and Script to load vLB into AAI:
One for VIM: How-To: Register a VIM/Cloud Instance to ONAP and - AAI-1928Getting issue details... STATUS
|AAI to slow for OOF/HAS||Keong Lim|
Similarly to the "AAI too slow for Holmes" item below, this introduction of extra caching of AAI data is a worrisome development and sad indictment of the performance of the system architecture.
What can we do about this?
|Relationship between POMBA Common Model and AAI schema?||Keong Lim|
Curious to know what is the relationship between the POMBA Common Model and the AAI schema? There seems to be an overlap in these object definitions and relationships.
Is POMBA a potential client for AAI schema services?
15th Nov: As per Geora's and Sharon's comments:
POMBA is a client of AAI APIs. It retrieves certain objects from AAI and transforms it into POMBA COMMON model which is aimed to represent flat structure of service instance representation.
The POMBA model enables us to normalize data from different data sources to facilitate auditing. To save time and work, we often use A&AI as our starting point, but conceptually, this model can have more than is currently or makes sense to have in A&AI.
So, POMBA needs to evolve independently of AAI, even though it has common ancestry.
As we are having discussions about the AAI Schema Services with a view to future dynamic schema updates, e.g. via SDC modelling, we will need to be aware of the downstream impacts of such a change.
I think this needs to be added to the use cases for AAI Schema Services (and GraphGraph?) behaviours.
|Postel's Law / Robustness Principle for AAI data inputs||Keong Lim|
While helping UUI team to debug a family of related issues such as - AAI-1915Getting issue details... STATUS , found that their JSON request bodies had inserted extra lines that were not acceptable to AAI, e.g.
Initially, I thought this could be due to XML-to-JSON translation error, but it could also have been a copy-paste from the output of a GET, e.g.
In the spirit of Postel's Law ("be liberal in what you accept"), could/should AAI accept both variations of the input data above?
There could be additional validation that the element name inside the request body matches the element name in the URL of the API (similar validation is already performed for the key ID value).
It would also allow for simple methods of data transfer/migration, where AAI output is directly accepted as AAI input.
|MultiCloud usage of AAI for HPA telemetry/time-series data to OOF|
HPA telemetry data collection and make it persistent in A&AI, from which OOF can leverage during its decision making process.and
The reason why we propose here is that VES mechanism doesn't store the telemetry data into A&AI. And OOF now can only get those kind of data from A&AI.
|Purpose of fields in AAI|
Dénes Németh wrote in - AAI-1104Getting issue details... STATUS :
In think it would be good to answer what is the meaning of the field (collection of PEMs of the CA xor URL)
1. Is AAI intended to strictly prescribe how the fields are used and what contents are in the values?
Even if (1) is true, AAI is not really in any position to enforce how clients use the data, so really (2) is always true and we need to consult the original producers of the data and the ultimate consumers of the data to document their intended meanings.
How do we push to have documentation on the purpose and meaning of the fields in AAI?
Where does all this documentation go?
Should the documentation be backed up by validation code?
See also discussion about AAI in 2018-11-28 ExtAPI Meeting notes
|HAproxy in OOM|
1st Nov 2018
Why is the pod for HAproxy not named (hard to figure out that there is a proxy), unsure how it is logging and where
James Forsyth creates JIRA tasks to 1. to have the pod named 2. add logging to the proxy
|Modeling team R4 discussion, including extra AAI attributes in a model-driven way|
|15th Nov 2018|
Also referred from comments on ONAP R4+ Service Modeling Discussion Calls
9)“vhn-portal-url”?“Bandwidth”,"QoS","SLA",etc, attribtutes that not all the services need but still need to be stored in certain service instance: stored as a schemaless field on the service-instance vertex (Chesla will follow up) (my concerns: according to the call, is that ok if we set a "global-type of service" and a "customized-type of service", then mapped it with internal descriptor, and A&AI's model only stores global type in service instance's schema, but stores the customer-faced attributes of service in a schemaless way? Chesla Wechsler Kevin Scaggs Andy Mayer)
See also Modeling 2018-11-13
The service-instance already uses a "metadata" relationship, which can store an arbitrary list of key-value pairs, but perhaps AAI should extend the use of the "properties" element, which is also an arbitrary list of name-value pairs or the "extra-properties" element, which is also an arbitrary list of name-value pairs.
15th Nov: Having seen Chesla's presentation, it should be called "Model-driven schema" rather than "schemaless" behaviour, since the idea is that the changes are controlled by SDC modelling. Seems aligned to the eventual goal in AAI Schema Service Use Case Proposals and AAI Schema Service.
|1st Nov 2018|
Security subcommittee has recommended teams move away from jackson, and will be presenting alternatives and asking for an assessment from each project. Our team will need to do an analysis - this would not be trivial, especially given how many of our repos are impacted. As of now, this would be a very high LOE for the team, we need to understand what the recommendation from the SECCOM is before we can provide better details on what the LOE would be.
10th Oct: Present to Seccom meeting
15th Oct: Present to PTL meeting
31st Oct: Debatable whether the cost of swapping Cassandra and changing code is worth the benefit of removing Jackson from the vulnerabilities list.
|AAI too slow for Holmes|
|1st Nov 2018|
The problem for caching is how to know when to update the cached data. Even though the access time may be fast for Holmes, the risk is using out-of-date data, so the correlations will be wrong anyway. Also, duplicating the AAI data outside of AAI is probably a bad architectural decision. Making AAI faster for these use cases would be better.
Has there been a performance analysis of where the time is spent? Could it help to use ElasticSearch (e.g. as in sparky)? Should Holmes have a batch interface to get more AAI data in fewer calls? Or a better correlation API that results in fewer calls?
|2 Types of logging in A&AI WS|
|1st Nov 2018|
There are 2 types of logging in the services
Is that correct? Shouldn't there be just 1 type?
After Casablanca release investigate logging guidelines and figure out what library to use in order to unify logging within A&AI
26th Nov: See also ONAP Application Logging Specification - Post Dublin
|Disable unused web services|
|1st Nov 2018|
Could we disable unused (i.e. not integrated) A&AI web services, so that the deployment is faster and the resource footprint is smaller? e.g. Champ (any other ws?)
Motivation: Decrease the resource footprint for A&AI (ONAP) deployments
Idea: we could support 2 different deployments 1. full (normal) deployment and 2. barebones deployment. The point of the "barebone" deployment would be to deploy only the essential services necessary for proper functioning of A&AI (leaving out services like cacher, sparky, graphadmin, having 1 cassandra node instead of 3 or 5 etc).
In order to reduce hardware/cloud costs (mainly the memory footprint) it could be beneficial to support a minimalistic A&AI deployment.
Venkata Harish Kajur and Pavel Paroulek - investigate how to disable/enable charts in A&AI so we can create a core group of pods which handle the use-cases and than extended group will all the services. Consider a group of unused/unintegrated services (like Champ). Consider other possible groups (like GUI?)
|1st Nov 2018|
|Dublin 5G Use Case|
|25th Oct 2018|
Dublin AAI changes in support of 5g use cases.
Link for presentation: 5G - PNF Plug and Play (Casablanca carry-over items)