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A better way of understanding our yuuvis® Momentum microservices - graphical overviews of the architecture and basic use case flows 
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titlereview
Priority1
Note
AssigneeMax (+DEV), Inga
Excerpt
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Resources & Remarks

Modification History

NameDateProduct VersionAction
Max/Inga2020
Page created.
Antje08 FEB 20212.4New page properties macro.
Antje17 MAY 20212021 Summerrenamed for new structure



Excerpt

Graphical overviews describing the interaction of the yuuvis® Momentum core services in exemplary basic use case flows. 


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Table of Contents

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Introduction

By chunking up the system into microservices it can be tough to keep the overview of all available services, their relationships and dependencies to each other. The following graphical overview of our microservice architecture offers you a first entry point into the yuuvis® Momentum landscape. By providing further and more detailed examples based on special use cases (flows) you'll get a better and easy way of understanding our entire landscape.

Graphical Overview

For visualizing the topology of our microservices the following overview shows - on a higher level - many of our core microservices. 
For understanding various flows - on a more granular level - check out the detailed diagrams visualizing special use case. 

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graphicalOverview_LoginCoreAPI
graphicalOverview_LoginCoreAPI

Login to the Core API - Authentication (Browser / Application)

...

To interact with yuuvis® it is necessary to log in with a user account. The user accounts are managed by at least one external identity provider.

...

1. - HTTP request to any API endpoint, sending basic authentication or bearer token

2. - verify credentials externally

3. - receive auth code to authentication with auth code

4. - request roleset acquisition

5. - query user roleset externally

6. - receive user roleset

7. - present roleset

8. - provide authentication token and proceed with initial API request

9. - request information from other parts of the system

10. - obtain requested information

11. - produce API response

12. - send HTTP response to user

Webhook entry points

*1 - user.info

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Authentication Flow (Application)
Authentication Flow (Application)


1. - HTTP request to any API endpoint

2. - Redirect to Identification Provider

3. - Verify Credentials externally

4. - Redirect to authentication with Auth code

5. - Send Auth code to Authentication Service

6. - Retrieve UserId using Auth code

7. - Recieve UserId

8. - Request roleset acquisition

9. - Query user roleset

10. - Recieve user roleset

11. - Present roleset

12. - Provide authentication token and Proceed with initial API request

13. - Request information from other parts of the System

14. - Obtain requested information

15. - Produce API response

16. - Send HTTP response to User

Webhook entry points

*1 - user.info

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titleClick here to show the authentication flow (browser) >>

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Authentication Flow (Browser)
Authentication Flow (Browser)


Note

The authentication flow is always part of all described flows. It is used to get a valid authentication token for further processing.

To interact with yuuvis® Momentum, it is necessary to log in with a user account. The user accounts are managed by at least one external identity provider.
>> Concept: Authentication against the Core API
>> Example Tutorial: Login to the Core API (Java)

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graphicalOverview_ImportingDocuments
graphicalOverview_ImportingDocuments

Importing Documents

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titleClick here to show the import flow >>

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Importing Documents
Importing Documents

Documents can be imported into a yuuvis® Momentum system using the provided core API's HTTP requests for importing documents (POST /api/dms/objects). >>  
>> Example Tutorial: Importing Documents via Core API

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graphicalOverview_RetrievalContent
graphicalOverview_RetrievalContent

Retrieval of Content by ID / Older Version

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titleClick here to show the import content retrieval flow by ID >>

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1. - HTTP Post request containing metadata and content

2. - enrichment of request with authentication token

3. - defer content to storage services

3.1 - analyze content file

3.2 - skip content analyzer

4. - content storage handling

4.1 - using custom storage via archive service

4.2 - using s3 interface of repository

5. - create metadata based on previous steps

6. - write metadata to storage / index instances

7. - index new object in ES

8. - create initial audit entry

9. - create API response from metadata

10. - return metadata as HTTP response

During asynchronous import operations, the controller service provides messaging for the boxed in services

Webhook entry points

*1 - dms.request.import.storage.before

*2 - dms.response.objects

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Retrieval of Content by ID
Retrieval of Content by ID


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titleClick here to show the content retrieval flow by ID (older version) >>

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Retrieval of Content by ID / Older Version
Retrieval of Content by ID / Older Version

The content of already imported documents into the yuuvis® Momentum system can be retrieved using the provided core API's HTTP requests for retrieving content files (GET /api/dms/objects/{objectId}/contents/file). If a specific version of the document's content is to be requested, the endpoint to be called changes and includes the specific version (GET /api/dms/objects/{objectId}/versions/{versionNr}/contents/file). >>  
>> Example Tutorial: Retrieving Documents via Core API


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graphicalOverview_RetrievalMetadata
graphicalOverview_RetrievalMetadata

Retrieval of Metadata by ID / Older Version

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titleClick here to show the content metadata retrieval flow by ID >>

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1. - HTTP get request to object URL

2. - Enrichment of request with authentication Token

3. - Check for User Authorization using search service query

4. - Query elastic search for object ID

5. - Elasticsearch metadata response (if user is authorized)

6. - Repository url of objectId

7. - Request content of objectID

8. - Query objectId in Storage Provider

9. - Storage Provider binary content response

10. - Return object binary content

11. - Write CONTENT_ACCESSED audit entry

12. - Create API response from binary content

13. - Return HTTP binary content response

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Retrieval of Metadata by ID
Retrieval of Metadata by ID


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titleClick here to show the content metadata retrieval flow by ID (older version) >>

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1. - HTTP get request to object URL

2. - Enrichment of request with authentication Token

3. - Check for User Authorization using search service query

4. - Query elastic search for object ID

5. - Elasticsearch metadata response (if user is authorized)

6. - Verify that user has object access rights

7. - Retrieve metadata version using Registry Service

8. - Query object metadata version from database

9. - Return metadata including Repository URL of content

10. - Return content Repo URL

11. - Request content of objectID

12. - Query objectId in Storage Provider

13. - Storage Provider binary content response

14. - Return object binary content

15. - Write CONTENT_ACCESSED audit entry

16. - Create API response from binary content

17. - Return HTTP binary content response

...

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Retrieval of Metadataby ID / Older Version
Retrieval of Metadataby ID / Older Version

The metadata of already imported documents into the yuuvis® Momentum system can be retrieved using the provided core API's HTTP requests for retrieving the metadata (GET /api/dms/objects/{objectId}). If a specific version or all versions of the document's metadata is to be requested, the endpoint to be called changes and includes the specific version (GET /api/dms/objects/{objectId}/versions / GET /api/dms/objects/{objectId}/versions/{versionNr}). >>  
>> Example Tutorial: Retrieving Documents via Core API

...


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titleClick here to show the metadata retrieval flow by ID >>

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1. - HTTP get request to object URL

2. - Enrichment of request with authentication Token

3. - Request metadata

4. - Query objectId in database

5. - DB metadata response

6. - Write METADATA_ACCESSED audit entry

7. - Return metadata object metadata

8. - Create API response from metadata

9. - Return HTTP metadata response

Webhook entry points

*1 - dms.response.objects

graphicalOverview_SearchQueries
graphicalOverview_SearchQueries

Search Queries

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titleClick here to show the metadata retrieval flow by ID (older version) >>

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1. - HTTP get request to object URL

2. - Enrichment of request with authentication Token

3. - Query Metadata availability using Search Service

4. - Query objectId in ES

5. - Elastic Search version data response

6. - Return registry link if user is authorized for to access the object

7. - Retrieve metadata version using Registry Service

8. - Retrieve object version from data base

9. - Database object metadata response

10. - Return metadata object metadata

11.- Write METADATA_ACCESSED audit entry

12. - Create API response from metadata

13. - Return HTTP metadata response

Webhook entry points

*1 - dms.response.objects

search queries flow >>

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Search Queries
Search Queries

Already imported objects into the yuuvis® Momentum system can be queried using the provided core API's HTTP request with the search query as request body (POST /api/dms/objects/search). >> CMIS-Based
>> Concept: Search Query Language


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graphicalOverview_UpdateContent
graphicalOverview_UpdateContent

Update Content

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titleClick here to show the search queries update content flow >>

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1. - HTTP get request to object URL

2. - Enrichment of request with authentication Token

3. - Request query execution

4. - Translate and send ES query

5. - Receive ES query results

6. - Return metadata object list

7. - Create API response from metadata

8. - Return HTTP metadata response

Webhook entry points

*1 - dms.request.search

*2 - dms.response.objects

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Update Content
Update Content

The content of an already imported document into the yuuvis® Momentum system can be updated using the provided core API's HTTP requests for updating the content (POST /api/dms/objects/{objectId}/contents/file). >>  
>> Example Tutorial: Updating Documents via Core API


Anchor
graphicalOverview_UpdateMetadata
graphicalOverview_UpdateMetadata

Update Metadata

1. - HTTP post request to content url of object

2. - Enrichment of the Request with authentication token

3. - Verify user has writing permissions on object using Search Service

4. - Query object in Elastic Search

5. - Return ElasticSearch query results

6. - Return User Authorization Verification results

7. - Infer analysis of new content item

8. - Commit new content to storage

9. - Content Storage Handling

9.1 - Using custom storage via Archive Service

9.2 - Using s3 interface of repository

10. - Update object metadata contentstream attribute

11. - Commit updated metadata to database and index

12. - Index the updated metadata in ES

13. - Write CONTENT_UPDATED audit entry

14. - Return updated metadata

15. - Create API response from metadata

16. - Return updated metadata

Webhook entry points

*1 - dms.response.objects

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titleClick here to show the update content metadate flow >>

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Update Metadata
Update Metadata

The metadata of an already imported document into the yuuvis® Momentum system can be updated using the provided core API's HTTP requests for updating the metadata (POST /api/dms/objects/{objectId} / PATCH /api/dms/objects/{objectId}). >>  
>> Example Tutorial: Updating Documents via Core API

Anchor
graphicalOverview_Deletion
graphicalOverview_Deletion

Deletion

Expand
titleClick here to show the update metadate deletion flow >>

Image Removed

1. - HTTP post request to object id URL

2. - Enrichment of request with authentication token

3. - Query for objectId using Search Service to verify user Authorization

4. - Query Elasticsearch for object

5. - Elasticsearch object response (if user is properly authenticated)

6. - Authorization Test query response

7. - Infer metadata validation and update

8. - Commit updated metadata to index

9. - Index updated metadata in ES

10. - If Expiration Date has changed: update content storage via Archive Service

11. - Update metadata in Database

12. - Write METADATA_UPDATED audit entry

13. - Return updated metadata

14. - Create API response from metadata

15. - Return metadata HTTP response

Webhook entry points

*1 - dms.request.update.metadat

*2 - dms.response.objects

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Deletion
Deletion

An already imported document into the yuuvis® Momentum system can be deleted using the provided core API's HTTP requests for deleting documents (DELETE /api/dms/objects/{objectId}). >>  
>> Example Tutorial: Deleting Documents via Core API

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titleClick here to show the deletion flow >>

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1. - HTTP delete request to object id URL

2. - Enrichment of request with authentication token

3. - Query object using Search Service to verify user Authorization

4. - Query object in ElasticSearch

5. - ElasticSearch object reponse

6. - Authorization Verification Results

7. - Infer deletion of content

...

9. - Flag as deleted across Storage Providers

10. - Flag as deleted in Database

11. - Return deletion Status Code

12. - OBJECT_DELETED audit entry

13. - Return Deletion Results

Webhook entry points

*1 - dms.response.objects


Summary

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Core Services

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Core Services

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Additional Services and Custom Clients

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Endpoints

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