owner | Get rid of the boilerplate code | REST library

Use inheritance very carefully. Prefer association over inheritance whenever your inheritance is not a permanent truth from the birth to the death of an object. ANd keep in mind that dependencies between classes do not make any promises about objects of those classes.

Some clarifications on the UML syntax:

• I understand that your plain thick lines ended with a small hollow triangle represent a specialization/generalization relationship (aka inheritance). If this is correct, the triangle should be larger to avoid visual confusion. Moreover multiplicity makes no sense with inheritance and should be removed.
• I understand that with the dotted line you intend to represent an association with multiplicity. If this is correct:
  • the association should be plain lines, because dotted lines are for dependencies, and multiplicity would make no sense.
  • the meaning you give to the arrow head would be unclear. Do you use them to document navigability? In case of doubt, remove them. If you want to document ownership of the association end, use the dot notation instead. (we cannot say if it’s right or wrong, since it’s a decision on how your model sees the associations)

In view of your comments and the third model linked therein, there are some key UML semantics you need to keep in mind:

• Inheritance is an ultra-strong relationship which means "is (always) a". In your example, you may say that an Actor is always a Person, and hence, everything you say about a Person is also true for an Actor. By the way, you should avoid repeating inherited properties or methods, since it could create some ambiguity.
• Inheritance is not a substitute for aggregation, composition or association. You can for example not say that a CrewMember (one person) is always a Crew (a group of persons). A CrewMember belongs to a Crew but there are things that the crew can do together that the individual member can't.
• Inheritance is not suitable if it's not always true. A Character for example may often be a Person. But not always;: you can have ghost characters, comic characters, robot characters, or animals.
• Association means that there is some structural relation between some instances of the associated classes. For example, that one ore several persons live in one city, seems a very relevant assocaition.
• Dependency means that a class is dependent on another, i.e. without the other class it would not work or something would be missing. It's a statement about the classes and not the objects. I.e. If you meant to say that Person is dependent on City you just say that the class Person would not work without knowing about City (for example, because the operation sendPostCardFrom(city: City) needs an argument of that type) but you do not say anything about persons X, Y and Z. If you want that X, Y and Z are related to city a, b, and c, you need an association.

About the model content, I'll not decide for you and there is no single truth. I therefore prefer to draw your attention at potential issues. I raise them in form of a question, up-to you to adjust the model based on your own answer:

• Common issues between the both variants:

  • Are Actor and Director really Persons ? In this case, what with the Persons that are Actors and Directors at the same time (g.g. Clint Eastwood) ? Or are Actor and Director just roles that a Persons takes for a given Movie ?
  • Is a Character really related only to 1 Movie? What to do with Indiana Jones, where the same character appears in several movies?
  • In a similar way, I wonder if there's really a single Person who lives in a City or if this should not be a many-to-many association?

• Issues regarding the differences: `

  • Is a Person in version 1 a Character (inheritance) ? Or is a Character a representation of a Person (association: represents) ?
  • Is a Character in version 2 really an Actor and by transitivity also a Person (inheritance)? Or is the Character only associated with an Actor (association: plays) ?

It's up to you to decide, but wherever I asked a question about association or inheritance, you should better think twice before using inheritance (i.e. prefer association/composition over inheritance)

Your first problem can be that you use word ref in url.

It has to be (probably) branch name or empty string for master/main branch.

Other problem can be that your repo is empty so there is nothing to download. But I couldn't check it because I don't have empty repo and I was using Private Token to access only my repos.

Minimal working code which I used for tests.

You can get the phone number even without clicking on that button.

To achieve the "expected" output given the "actual" output, you could use the following filter:

Because you have an "OR" clause that will both return a record, you need to make sure you return "distinct" records

The houses list Hs is not empty at all, ever. It is created right at the very beginning with

try this

Support for _PIP_ADDITIONAL_REQUIREMENTS environment variable has not been released yet. It is only supported by the developer/unreleased version of the docker image. It is planned that this feature will be available in Airflow 2.1.1. For more information, see: Adding extra requirements for build and runtime of the PROD image.

For the older version, you should build a new image and set this image in the docker-compose.yaml. To do this, you need to follow a few steps.

1. Create a new Dockerfile with the following content:

The reason you want to change the ownership of some part of the app directory is that your app wants to modify some files or create new ones inside it at runtime. Generally speaking, it is considered a good practice to build an image to be immutable as much as possible.

Since you mentioned /app/logs, I suspect that your app generates log files while it is running. On some modern container orchestration platforms (such as Kubernetes), apps are usually designed to output logs to stdout and stderr.

The best practice is to write your application logs to the standard output (stdout) and standard error (stderr) streams.

Think about it: if your app generates logs files at /app/logs inside a container (there will be multiple containers of the same image running), how would you collect and monitor them in a unified way? What if different apps generate log files at different file system locations? But more importantly, if your container crashes, you'll just lose the log files. By writing logs to stdout and stderr, the platform will take care of all the complexities of managing and co-relating logs from all pods.

If you cannot change your app about the log files, at least you should mount a volume at /app/logs at runtime. For any container runtime (be it k8s or Docker), this is easily configurable. The mounted directory will be usually world-writable, so you won't need to change the ownership. But you'll still have to think about how to collect and manage the log files.

Likewise, if it is not for log files but that your app needs a file system to create a temporary file inside the app directory and you cannot change the location for some reason, at least you should try to mount an ephemeral volume before falling back to the last-resort of using the Jib Ownership Extension you mentioned.

Conclusively, give a careful assessment of why you have to change the ownership first. If the app wants to mutate itself at runtime, usually it's not a good practice for containerization and there must be some root cause that you may need to resolve in a proper way.