• How do we identify and access the Dockerfile ?
• How do we identify and access the Docker image ?
• Why the complicated git clone/pull in the Dockerfile ?

Describe/define a request block for describing the data requirements for a task.

Describe/define the minimum canIdoThis request/response.

Make a start on an IVOA note describing the basic UWS-docker service.

Define a minimal Registry entry for the ExecutionPlanner.

Make a start on the AstroDesktop container, with deployment scripts for

• TopCat
• Aladin
• Splat
• AstroPy

Describe/define how parser-mode would change the way that the parser interprets a request.

parser-mode: [lenient|strict]

• lenient allows/skips unknown elements in the request

  • Postel's law, "lenient on inputs, strict on outputs"
  • Reply should include a warning message with xpath (or jpath) of the skipped elements
  • WARN - unknown request element [xxxx]

• strict must understand and handle all the elements of a request

  • Fail-fast design, "fail fast, fail early"
  • Rejects any unknown or unhandled elements with an error message
  • FAIL - unknown request element [xxxx]

Create a simple registry deployment using Grégory's TAP service in a container.

Define a request block for describing the computing resources required for a task.

Create a containerised version of Grégory's TAP service.

Describe/define how partial fulfilment works.

In general:

• The client sends a partial set of requirements, with minimum values for things like computing resources and maximum values for things like expected execution time.
• The service responds with an updated set of requirements, adding maximum values for things like computing resources and minimum values for things like the expected startup time.

Each property is defined as a maximal, minimal or variable value, which indicates whether the property may be adjusted up or down.

• Max and min values for computing resources like cpu cores and memory are both minimal values. If they are set by the client they cannot be adjusted down by the server. However, the server may offer more than the requested resources, adjusting the values up in the response.
• Max and min values for startup time are maximal values. If they are set by the client they cannot be adjusted up by the server. However, the server may offer a shorter startup time, adjusting the value down in the response.

Get permission from DPAC to use the Gaia eDR3 Parquet data as a test case for ESCAPE.
See also wfau/gaia-dmp#582

Plan to migrate parts of this project into an IVOA project, documenting the process for reference.

Make a start on the IVOA standard document for the ExecutionPlanner service.

Create a list of questions for OSSR and submit them as issues in their GitLab system.

• How do I find entries with Docker containers ?

• How do I know if has a Dockerfile or container image ?

• How do I get the Dockerfile for ?

• How do I know what type of container images has ?

• How do I get the container image for ?

• How do I find out what resources a container image needs ?

• How do I find out what data a container image needs ?

Define the Java interface for a Handler for a Request|Response pair.

Handler - Accepts a request, responds with PASS/FAIL.
HandlerChain - linked list of Handlers, passing a Request|Response pair to each in turn until one fails, or we reach the end.

Each Handler applies some kind of rule to the request, and either rejects it (FAIL) or accepts it and optionally adjusts the request before passing it on to the next Handler.

Each Handler adds elements to the response as they go.