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REST API Synchronous Mode
In this format, the response to a signature request is the detail of the signature operation which, when successful, means returning the signed documents.
This mode is tipically used in situations where API integration is preferred, the number of files/request signing is low (<100) considering an average size of 200KB and with a synchronous response of the signed documents.
Architecture
The Sign’Stash Proxy components are in gray background, the Sign’Stash SaaS is on a green background, and the blue background respects the client service.
Hardware Requirements
This section describes the minimum and recommended hardware requirements for running the service based on a common and an extreme scenario .
A minimum of disk space (container volume) equal to 5x the total payload size must be guaranteed but it is recommended 10x.
This value is applicable to a single request and must be extrapolated according to the total number of requests being processed.
Ideally, the processor used by this service must have intensive processing capacities such as the following models:
Intel Xeon Skylake
Intel Xeon Broadwell
Scenario | 1 to 2 simultaneous requests (container memory) | Several simultaneous requests (container memory) |
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Common use case of ~10MB of payload (e.q. list of 50 files of 200KB each) |
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Extreme use case of ~500MB of payload (e.q. list of 25 files of 20MB each) |
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Based on internal stress tests, there are significant improvements in the metrics related to signature time when a request aggregates multiple documents. It means that it is significantly worse to create 50 requests with just one document each than to create a single request with 50 documents. This aspect must be considered in order to optimize the performance and the load of the systems involved. |
Software Requirements
Docker Engine 19+ for running the provided Docker image.
Running Docker image
Start the Sign’Stash Proxy service by setting the docker command according to the following format:
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docker run -d --mount source=vol[UID],target=/tmp -p [PORT]:8080 --memory=[MEMORY] [IMAGE_ID] --einvoice-integration-client.service.domain=[SAAS_DOMAIN] --einvoice-integration-client.rest.provider.proxy.hostname=[PROXY_HOSTNAME] --einvoice-integration-client.rest.provider.proxy.port=[PROXY_PORT] |
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Please refer to Docker run documentation for additional information |
Execution example using staging environment:
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docker run -d --mount source=vol1,target=/tmp -p 8081:8080 --memory=4g teammust/einvoice:integration-client-ws-f8ebf1180e7f430a147b84536e523fe85bdb362d-80 --einvoice-integration-client.service.domain=https://staging.must.digital/ |
API Methods
The methods supporting this mode are:
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Full API REST Swagger documentation is exposed by your locally deployed docker service in: http://[HOST]:[PORT]/signstash/einvoice-integration-client-ws/swagger-ui.html |
Signature integration scheme
Typical interactions between systems in this mode are presented in the following sequence diagram:
Signature response handling
General response handling overview: