package once

import (
	"context"
	"sync"
	"sync/atomic"
)

// Inspired from Golang sync.Once but it is only marked
// initialized when the provided function returns nil.

// Init represents the structure.
type Init struct {
	done uint32
	m    sync.Mutex
}

// Do is similar to sync.Once.Do - makes one successful
// call to the function. ie, it invokes the function
// if it is not successful yet.

/**
 * Represents the packaging of a Maven project.
 *
 * <p>The {@code Packaging} class defines the type of artifact that a Maven project produces during the build process.
 * The packaging type determines the structure of the project's output and how Maven will treat the resulting artifact.</p>
 *
 * <p>Common packaging types include {@code jar}, {@code war}, {@code pom}, {@code maven-plugin}, {@code ear}, and others.

  </parent>

  <groupId>inheritance</groupId>
  <artifactId>child-artifact-id</artifactId>
  <version>11-SNAPSHOT</version>
  <name>Model urls inheritance test child</name>
  <description>Flat directory structure case: module = ../child directory path + child directory path != child-artifact-id</description>

  <!-- 5 inherited urls with ../${project.artifactId} added to parent -->

In a real application, you probably would have your tests in a different file.

And your **FastAPI** application might also be composed of several files/modules, etc.

### **FastAPI** app file

Let's say you have a file structure as described in [Bigger Applications](bigger-applications.md){.internal-link target=_blank}:

```
.
├── app
│   ├── __init__.py
│   └── main.py
```

In the file `main.py` you have your **FastAPI** app:

type PostPolicyForm struct {
	Expiration time.Time // Expiration date and time of the POST policy.
	Conditions struct {  // Conditional policy structure.
		Policies []struct {
			Operator string
			Key      string
			Value    string
		}
		ContentLengthRange contentLengthRange
	}
}

// implemented to ensure that duplicate keys in JSON

        int start = bufferIndex;
        int structureSize = SMBUtil.readInt2(buffer, bufferIndex);
        if ( structureSize != 16 ) {
            throw new SMBProtocolDecodingException("Structure size is not 16");
        }

        this.shareType = buffer[ bufferIndex + 2 ];
        bufferIndex += 4;
        this.shareFlags = SMBUtil.readInt4(buffer, bufferIndex);
        bufferIndex += 4;

<font color="#3465A4">INFO    </font> Resolved absolute path <font color="#75507B">/home/user/code/awesomeapp/</font><font color="#AD7FA8">main.py</font>
<font color="#3465A4">INFO    </font> Searching for package file structure from directories with <font color="#3465A4">__init__.py</font> files
<font color="#3465A4">INFO    </font> Importing from <font color="#75507B">/home/user/code/</font><font color="#AD7FA8">awesomeapp</font>

// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package notify

import (
	"github.com/minio/minio/internal/event/target"
)

// Config - notification target configuration structure, holds
// information about various notification targets.
type Config struct {
	AMQP          map[string]target.AMQPArgs          `json:"amqp"`
	Elasticsearch map[string]target.ElasticsearchArgs `json:"elasticsearch"`

        int start = bufferIndex;

        int structureSize = SMBUtil.readInt2(buffer, bufferIndex);
        if ( structureSize != 9 ) {
            throw new SMBProtocolDecodingException("Structure size != 9");
        }

        this.sessionFlags = SMBUtil.readInt2(buffer, bufferIndex + 2);
        bufferIndex += 4;

        int securityBufferOffset = SMBUtil.readInt2(buffer, bufferIndex);

        In the rare cases where this is infeasible, we will also accept a detailed set of instructions.
        You can also use [Gradle Project Replicator](https://github.com/android/project-replicator) to reproduce the structure of your project.
    validations:
      required: true
  - type: input
    id: gradle-version
    attributes:
      label: Gradle version
      description: What version of Gradle are you running?