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63 lines
2.1 KiB
Python
63 lines
2.1 KiB
Python
import uuid
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from django.db import models
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from django.utils import timezone
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class OutboxStatus(models.TextChoices):
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PENDING = "PENDING", "Pending"
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PROCESSING = "PROCESSING", "Processing"
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PROCESSED = "PROCESSED", "Processed"
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FAILED = "FAILED", "Failed"
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DEAD_LETTER = "DEAD_LETTER", "Dead letter"
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class OutboxEvent(models.Model):
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id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
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aggregate_type = models.CharField(max_length=128)
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aggregate_id = models.CharField(max_length=128)
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event_type = models.CharField(max_length=128)
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payload = models.JSONField(default=dict)
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status = models.CharField(
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max_length=32,
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choices=OutboxStatus.choices,
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default=OutboxStatus.PENDING,
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db_index=True,
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)
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attempts = models.PositiveIntegerField(default=0)
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next_attempt_at = models.DateTimeField(default=timezone.now, db_index=True)
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correlation_id = models.CharField(max_length=128, blank=True)
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last_error = models.TextField(blank=True)
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created_at = models.DateTimeField(auto_now_add=True)
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processed_at = models.DateTimeField(null=True, blank=True)
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class Meta:
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ordering = ["created_at"]
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indexes = [
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models.Index(fields=["status", "next_attempt_at"]),
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models.Index(fields=["aggregate_type", "aggregate_id"]),
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]
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def __str__(self) -> str:
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return f"{self.event_type}:{self.id}"
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class InboxEvent(models.Model):
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id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
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source = models.CharField(max_length=128)
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external_event_id = models.CharField(max_length=256)
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payload_hash = models.CharField(max_length=128)
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received_at = models.DateTimeField(auto_now_add=True)
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processed_at = models.DateTimeField(null=True, blank=True)
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class Meta:
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constraints = [
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models.UniqueConstraint(
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fields=["source", "external_event_id"],
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name="uniq_inbox_source_external_event_id",
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)
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]
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def __str__(self) -> str:
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return f"{self.source}:{self.external_event_id}"
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