openapi: 3.2.0
info:
  description: Use the Queue API to produce and consume messages, create queues, and manage related items. For more information, see [Queue](/iaas/Content/queue/overview.htm).
  title: Queue API
  version: '20210201'
  x-provenance:
    method: harvested
    first_party: true
    publisher: Oracle
    source: https://docs.oracle.com/en-us/iaas/api/specs/49b73908fe2a44b79dc0e48d624a171339887f6587b79da8d22e48eeae28a8ce.yaml
    harvested: '2026-08-04'
    note: Published by Oracle as the contract for the Queue API OCI service and stored verbatim; API Evangelist added only this provenance block.
  x-evidence:
  - url: https://docs.oracle.com/en-us/iaas/api/specs/index.json
    what: Oracle's own index of every OCI service specification
  - url: https://docs.oracle.com/en-us/iaas/api/specs/49b73908fe2a44b79dc0e48d624a171339887f6587b79da8d22e48eeae28a8ce.yaml
    what: the harvested document for Queue API
servers:
- url: http://127.0.0.1/20210201
- url: https://127.0.0.1/20210201
tags:
- name: queue
paths:
  /queues/{queueId}/channels:
    get:
      description: "Gets the list of IDs of non-empty channels.\nIt will return an approximate list of IDs of non-empty channels. That information is based on the queue level statistics. \nAPI supports optional channelFilter parameter which will filter the returned results according to the specified filter.\nList of channel IDs is approximate, because statistics is refreshed once per-second, and that list represents a snapshot of the past information. API is paginated.\n"
      operationId: ListChannels
      parameters:
      - $ref: '#/components/parameters/QueueIdentifierPathParam'
      - $ref: '#/components/parameters/ConsumerGroupQueryParam'
      - $ref: '#/components/parameters/RequestIdHeader'
      - $ref: '#/components/parameters/PaginationLimitQueryParam'
      - $ref: '#/components/parameters/PaginationTokenQueryParam'
      - $ref: '#/components/parameters/ChannelFilter'
      responses:
        200:
          description: The list of IDs of non-empty channels.
          headers:
            opc-next-page:
              description: 'For pagination of a list of items. When paging through a list, if this header appears in the response,

                then a partial list might have been returned. Include this value as the `page` parameter for the

                subsequent GET request to get the next batch of items.

                '
              schema:
                type: string
            opc-request-id:
              description: 'Unique Oracle-assigned identifier for the request. If you need to contact

                Oracle about a particular request, please provide the request ID.

                '
              schema:
                type: string
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ChannelCollection'
        400:
          $ref: '#/components/responses/400'
        401:
          $ref: '#/components/responses/401'
        404:
          $ref: '#/components/responses/404'
        429:
          $ref: '#/components/responses/429'
        500:
          $ref: '#/components/responses/500'
        default:
          $ref: '#/components/responses/default'
      summary: Gets the list of IDs of non-empty channels.
      tags:
      - queue
      x-obmcs-client-retries-enabled: true
      x-related-resource: '#/definitions/ChannelCollection'
  /queues/{queueId}/messages:
    get:
      description: 'Consumes messages from the queue.

        You must use the [messages endpoint](/iaas/Content/queue/messages.htm#messages__messages-endpoint) to consume messages.

        The messages endpoint may be different for different queues. Use [`GetQueue`](#/en/queue/latest/Queue/GetQueue/) to find the queue''s `messagesEndpoint`.

        GetMessages accepts optional channelFilter query parameter that can filter source channels of the messages.

        When channelFilter is present, service will return available messages from the channel which ID exactly matched the filter.

        When filter is not specified, messages will be returned from a random non-empty channel within a queue.

        '
      operationId: GetMessages
      parameters:
      - $ref: '#/components/parameters/QueueIdentifierPathParam'
      - $ref: '#/components/parameters/VisibilityQueryParam'
      - $ref: '#/components/parameters/TimeoutQueryParam'
      - $ref: '#/components/parameters/LimitQueryParam'
      - $ref: '#/components/parameters/RequestIdHeader'
      - $ref: '#/components/parameters/ChannelFilter'
      - $ref: '#/components/parameters/ConsumerGroupQueryParam'
      responses:
        200:
          description: A list of messages.
          headers:
            opc-request-id:
              description: 'Unique Oracle-assigned identifier for the request. If you need to contact

                Oracle about a particular request, please provide the request ID.

                '
              schema:
                type: string
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/GetMessages'
        400:
          $ref: '#/components/responses/400'
        401:
          $ref: '#/components/responses/401'
        404:
          $ref: '#/components/responses/404'
        429:
          $ref: '#/components/responses/429'
        500:
          $ref: '#/components/responses/500'
        default:
          $ref: '#/components/responses/default'
      summary: Consumes message from the queue.
      tags:
      - queue
      x-related-resource: '#/definitions/GetMessage'
    post:
      description: 'Puts messages into the queue.

        You must use the [messages endpoint](/iaas/Content/queue/messages.htm#messages__messages-endpoint) to produce messages.

        The messages endpoint may be different for different queues. Use [`GetQueue`](#/en/queue/latest/Queue/GetQueue/) to find the queue''s `messagesEndpoint`.

        '
      operationId: PutMessages
      parameters:
      - $ref: '#/components/parameters/QueueIdentifierPathParam'
      - $ref: '#/components/parameters/RequestIdHeader'
      responses:
        200:
          description: The messages have been published in the queue.
          headers:
            opc-request-id:
              description: 'Unique Oracle-assigned identifier for the request. If you need to contact

                Oracle about a particular request, please provide the request ID.

                '
              schema:
                type: string
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PutMessages'
        400:
          $ref: '#/components/responses/400'
        401:
          $ref: '#/components/responses/401'
        404:
          $ref: '#/components/responses/404'
        409:
          $ref: '#/components/responses/409'
        429:
          $ref: '#/components/responses/429'
        500:
          $ref: '#/components/responses/500'
        default:
          $ref: '#/components/responses/default'
      summary: Puts messages in the queue.
      tags:
      - queue
      x-related-resource: '#/definitions/PutMessage'
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/PutMessagesDetails'
        description: Details for the messages to publish.
        required: true
  /queues/{queueId}/messages/actions/deleteMessages:
    post:
      description: 'Deletes multiple messages from the queue or the consumer group. Only messages from the same queue/consumer group can be deleted at once.

        You must use the [messages endpoint](/iaas/Content/queue/messages.htm#messages__messages-endpoint) to delete messages.

        The messages endpoint may be different for different queues. Use [`GetQueue`](#/en/queue/latest/Queue/GetQueue/) to find the queue''s `messagesEndpoint`.

        '
      operationId: DeleteMessages
      parameters:
      - $ref: '#/components/parameters/QueueIdentifierPathParam'
      - $ref: '#/components/parameters/ConsumerGroupQueryParam'
      - $ref: '#/components/parameters/RequestIdHeader'
      responses:
        200:
          description: The request has been processed. Receiving a 200 error code does not mean that all messages have been deleted. Instead you have to look at the response body.
          headers:
            opc-request-id:
              description: 'Unique Oracle-assigned identifier for the request. If you need to contact

                Oracle about a particular request, please provide the request ID.

                '
              schema:
                type: string
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/DeleteMessagesResult'
        400:
          $ref: '#/components/responses/400'
        401:
          $ref: '#/components/responses/401'
        404:
          $ref: '#/components/responses/404'
        429:
          $ref: '#/components/responses/429'
        500:
          $ref: '#/components/responses/500'
        default:
          $ref: '#/components/responses/default'
      summary: Deletes multiple messages from the queue.
      tags:
      - queue
      x-obmcs-client-retries-enabled: true
      x-related-resource: '#/definitions/GetMessage'
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/DeleteMessagesDetails'
        description: Details for the messages to delete.
        required: true
  /queues/{queueId}/messages/actions/updateMessages:
    post:
      description: 'Updates multiple messages in the queue or the consumer group. Only messages from the same queue/consumer group can be updated at once.

        You must use the [messages endpoint](/iaas/Content/queue/messages.htm#messages__messages-endpoint) to update messages.

        The messages endpoint may be different for different queues. Use [`GetQueue`](#/en/queue/latest/Queue/GetQueue/) to find the queue''s `messagesEndpoint`.

        '
      operationId: UpdateMessages
      parameters:
      - $ref: '#/components/parameters/QueueIdentifierPathParam'
      - $ref: '#/components/parameters/ConsumerGroupQueryParam'
      - $ref: '#/components/parameters/RequestIdHeader'
      responses:
        200:
          description: The request has been processed. Receiving a 200 error code does not mean that all messages have been updated. Instead you have to look at the response body.
          headers:
            opc-request-id:
              description: 'Unique Oracle-assigned identifier for the request. If you need to contact

                Oracle about a particular request, please provide the request ID.

                '
              schema:
                type: string
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/UpdateMessagesResult'
        400:
          $ref: '#/components/responses/400'
        401:
          $ref: '#/components/responses/401'
        404:
          $ref: '#/components/responses/404'
        429:
          $ref: '#/components/responses/429'
        500:
          $ref: '#/components/responses/500'
        default:
          $ref: '#/components/responses/default'
      summary: Updates multiple messages in the queue.
      tags:
      - queue
      x-obmcs-client-retries-enabled: true
      x-related-resource: '#/definitions/GetMessage'
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/UpdateMessagesDetails'
        description: Details for the messages to update.
        required: true
  /queues/{queueId}/messages/{messageReceipt}:
    delete:
      description: 'Deletes the message represented by the receipt from the queue.

        You must use the [messages endpoint](/iaas/Content/queue/messages.htm#messages__messages-endpoint) to delete messages.

        The messages endpoint may be different for different queues. Use [`GetQueue`](#/en/queue/latest/Queue/GetQueue/) to find the queue''s `messagesEndpoint`.

        '
      operationId: DeleteMessage
      parameters:
      - $ref: '#/components/parameters/QueueIdentifierPathParam'
      - $ref: '#/components/parameters/MessageReceiptPathParam'
      - $ref: '#/components/parameters/RequestIdHeader'
      - $ref: '#/components/parameters/ConsumerGroupQueryParam'
      responses:
        204:
          description: The message has been deleted.
          headers:
            opc-request-id:
              description: 'Unique Oracle-assigned identifier for the request. If you need to contact

                Oracle about a particular request, please provide the request ID.

                '
              schema:
                type: string
        400:
          $ref: '#/components/responses/400'
        401:
          $ref: '#/components/responses/401'
        404:
          $ref: '#/components/responses/404'
        409:
          $ref: '#/components/responses/409'
        429:
          $ref: '#/components/responses/429'
        500:
          $ref: '#/components/responses/500'
        default:
          $ref: '#/components/responses/default'
      summary: Deletes a message from the queue.
      tags:
      - queue
      x-obmcs-client-retries-enabled: true
      x-related-resource: '#/definitions/GetMessage'
    put:
      description: 'Updates the visibility of the message represented by the receipt.

        You must use the [messages endpoint](/iaas/Content/queue/messages.htm#messages__messages-endpoint) to update messages.

        The messages endpoint may be different for different queues. Use [`GetQueue`](#/en/queue/latest/Queue/GetQueue/) to find the queue''s `messagesEndpoint`.

        '
      operationId: UpdateMessage
      parameters:
      - $ref: '#/components/parameters/QueueIdentifierPathParam'
      - $ref: '#/components/parameters/MessageReceiptPathParam'
      - $ref: '#/components/parameters/RequestIdHeader'
      - $ref: '#/components/parameters/ConsumerGroupQueryParam'
      responses:
        200:
          description: The visibility of the message has been updated.
          headers:
            opc-request-id:
              description: 'Unique Oracle-assigned identifier for the request. If you need to contact

                Oracle about a particular request, please provide the request ID.

                '
              schema:
                type: string
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/UpdatedMessage'
        400:
          $ref: '#/components/responses/400'
        401:
          $ref: '#/components/responses/401'
        404:
          $ref: '#/components/responses/404'
        409:
          $ref: '#/components/responses/409'
        429:
          $ref: '#/components/responses/429'
        500:
          $ref: '#/components/responses/500'
        default:
          $ref: '#/components/responses/default'
      summary: Updates the visibility of a message to extend (or reduce) it.
      tags:
      - queue
      x-obmcs-client-retries-enabled: true
      x-related-resource: '#/definitions/UpdatedMessage'
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/UpdateMessageDetails'
        description: Details for the message to update.
        required: true
  /queues/{queueId}/stats:
    get:
      description: 'Gets the statistics for the queue and its dead letter queue.

        You must use the [messages endpoint](/iaas/Content/queue/messages.htm#messages__messages-endpoint) to get a queue''s statistics.

        The messages endpoint may be different for different queues. Use [`GetQueue`](#/en/queue/latest/Queue/GetQueue/) to find the queue''s `messagesEndpoint`.

        '
      operationId: GetStats
      parameters:
      - $ref: '#/components/parameters/QueueIdentifierPathParam'
      - $ref: '#/components/parameters/RequestIdHeader'
      - $ref: '#/components/parameters/ChannelId'
      - $ref: '#/components/parameters/ConsumerGroupQueryParam'
      responses:
        200:
          description: The stats for the queue and its dead letter queue.
          headers:
            opc-request-id:
              description: 'Unique Oracle-assigned identifier for the request. If you need to contact

                Oracle about a particular request, please provide the request ID.

                '
              schema:
                type: string
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/QueueStats'
        400:
          $ref: '#/components/responses/400'
        401:
          $ref: '#/components/responses/401'
        404:
          $ref: '#/components/responses/404'
        429:
          $ref: '#/components/responses/429'
        500:
          $ref: '#/components/responses/500'
        default:
          $ref: '#/components/responses/default'
      summary: Gets the statistics for the queue and its dead letter queue.
      tags:
      - queue
      x-obmcs-client-retries-enabled: true
      x-related-resource: '#/definitions/QueueStats'
components:
  parameters:
    TimeoutQueryParam:
      description: 'If the `timeoutInSeconds parameter` isn''t set or it is set to a value greater than 0, the request is using the long-polling mode and will only return when a message is available for consumption (it does not wait for limit messages but still only returns at-most limit messages) or after `timeoutInSeconds` seconds (in which case it will return an empty response), whichever comes first.


        If the parameter is set to 0, the request is using the short-polling mode and immediately returns whether messages have been retrieved or not.

        In same rare-cases a long-polling request could be interrupted (returned with empty response) before the end of the timeout.

        '
      in: query
      name: timeoutInSeconds
      x-default-description: If the parameter isn't set, or it is set to a value greater than 0, the request is using the long-polling mode.
      schema:
        type: integer
        default: 30
        maximum: 30
        minimum: 0
    PaginationTokenQueryParam:
      description: For list pagination. The value of the opc-next-page response header from the previous "List" call. For important details about how pagination works, see [List Pagination](/iaas/Content/API/Concepts/usingapi.htm#nine).
      in: query
      name: page
      schema:
        type: string
        minLength: 1
    QueueIdentifierPathParam:
      description: The unique queue identifier.
      in: path
      name: queueId
      required: true
      schema:
        type: string
    ConsumerGroupQueryParam:
      description: Optional parameter to specify a consumer group.
      in: query
      name: consumerGroupId
      required: false
      x-default-description: 'null'
      schema:
        type: string
    ChannelId:
      description: Id to specify channel.
      in: query
      name: channelId
      required: false
      x-default-description: 'null'
      schema:
        type: string
        maxLength: 64
        minLength: 1
    PaginationLimitQueryParam:
      description: For list pagination. The maximum number of results per page, or items to return in a paginated "List" call. For important details about how pagination works, see [List Pagination](/iaas/Content/API/Concepts/usingapi.htm#nine).
      in: query
      name: limit
      schema:
        type: integer
        default: 10
        maximum: 1000
        minimum: 1
    LimitQueryParam:
      description: 'The limit parameter controls how many messages is returned at-most.

        '
      in: query
      name: limit
      schema:
        type: integer
        default: 1
        maximum: 20
        minimum: 1
    ChannelFilter:
      description: Optional parameter to filter the channels.
      in: query
      name: channelFilter
      required: false
      x-default-description: 'null'
      schema:
        type: string
    MessageReceiptPathParam:
      description: The receipt of the message retrieved from a GetMessages call.
      in: path
      name: messageReceipt
      required: true
      schema:
        type: string
    RequestIdHeader:
      description: Unique Oracle-assigned identifier for the request. If you need to contact Oracle about a particular request, please provide the request ID.
      in: header
      name: opc-request-id
      schema:
        type: string
    VisibilityQueryParam:
      description: 'If the `visibilityInSeconds` parameter is set, messages will be hidden for `visibilityInSeconds` seconds and won''t be consumable by other consumers during that time.

        If it isn''t set it defaults to the value set at the queue level.


        Using a `visibilityInSeconds` value of 0 effectively acts as a peek functionality.

        Messages retrieved that way aren''t meant to be deleted because they will most likely be delivered to another consumer as their visibility won''t change, but will still increase the delivery count by one.

        '
      in: query
      name: visibilityInSeconds
      x-default-description: If the parameter isn't set it defaults to the value set at the queue level.
      schema:
        type: integer
        maximum: 43200
        minimum: 0
  schemas:
    UpdatedMessage:
      description: An updated message with the new visibility.
      properties:
        id:
          description: The ID of the message that's been updated.
          format: int64
          type: integer
        visibleAfter:
          description: 'The time after which the message will be visible to other consumers, expressed in [RFC 3339](https://tools.ietf.org/rfc/rfc3339) timestamp format.


            Example: `2018-04-20T00:00:07.405Z`

            '
          format: date-time
          type: string
      required:
      - id
      - visibleAfter
      type: object
    Error:
      description: Error Information.
      properties:
        code:
          description: A short error code that defines the error, meant for programmatic parsing.
          type: string
        message:
          description: A human-readable error string.
          type: string
      required:
      - code
      - message
    GetMessages:
      description: A list of messages from a queue.
      properties:
        messages:
          description: List of messages from a queue.
          items:
            $ref: '#/components/schemas/GetMessage'
          type: array
      required:
      - messages
      type: object
    GetMessage:
      description: A message consumed from a queue.
      properties:
        content:
          description: The content of the message.
          type: string
        createdAt:
          description: 'The time when message was created in queue.


            Example: `2018-04-20T00:00:07.405Z`

            '
          format: date-time
          type: string
        deliveryCount:
          description: The number of times that the message has been delivered to a consumer.
          type: integer
        expireAfter:
          description: 'The time after which the message will be automatically deleted, expressed in [RFC 3339](https://tools.ietf.org/rfc/rfc3339) timestamp format.


            Example: `2018-04-20T00:00:07.405Z`

            '
          format: date-time
          type: string
        id:
          description: The ID of the message. This ID is only used for tracing and debugging purposes and isn't used as a parameter in any request.
          format: int64
          type: integer
        metadata:
          $ref: '#/components/schemas/MessageMetadata'
        receipt:
          description: 'A receipt is a base64urlencode opaque token, uniquely representing a message.

            The receipt can be used to delete a message or update its visibility.

            '
          type: string
        visibleAfter:
          description: 'The time after which the message will be visible to other consumers, expressed in [RFC 3339](https://tools.ietf.org/rfc/rfc3339) timestamp format.


            Example: `2018-04-20T00:00:07.405Z`

            '
          format: date-time
          type: string
      required:
      - id
      - content
      - receipt
      - deliveryCount
      - visibleAfter
      - expireAfter
      - createdAt
      type: object
    UpdateMessagesDetails:
      description: The details of an UpdateMessages request.
      properties:
        entries:
          description: The array of messages to update in a queue.
          items:
            $ref: '#/components/schemas/UpdateMessagesDetailsEntry'
          minItems: 1
          type: array
      required:
      - entries
      type: object
    UpdateMessagesDetailsEntry:
      description: Object that represents a message to update in a queue.
      properties:
        receipt:
          description: The receipt of the message to update.
          type: string
        visibilityInSeconds:
          description: The new visibility of the message relative to the current time (as-per the clock of the server receiving the request).
          maximum: 43200
          minimum: 0
          type: integer
      required:
      - receipt
      - visibilityInSeconds
      type: object
    PutMessagesDetails:
      description: The details of a PutMessages request.
      properties:
        messages:
          description: The array of messages to put into a queue.
          items:
            $ref: '#/components/schemas/PutMessagesDetailsEntry'
          minItems: 1
          type: array
      required:
      - messages
      type: object
    DeleteMessagesResultEntry:
      description: 'Represents the result of a DeleteMessages request, whether it was successful or not.

        If a message was successfully deleted from the queue, the entry does not contain any fields.

        If a message failed to be deleted from the queue, the entry includes the `errorCode` and `errorMessage` fields.

        '
      properties:
        errorCode:
          description: The error code, in case the message was not successfully deleted from the queue.
          type: integer
        errorMessage:
          description: A human-readable error message associated with the error code.
          type: string
      type: object
    MessageMetadata:
      description: Object that represents metadata for message.
      properties:
        channelId:
          description: The channel ID which specifies the channel to publish or retrieve messages.
          maxLength: 64
          minLength: 1
          type: string
        customProperties:
          additionalProperties:
            type: string
          description: Additional message properties
          type: object
      required:
      - channelId
      type: object
    ChannelCollection:
      description: List of IDs of non-empty channels.
      properties:
        items:
          description: The approximate list of IDs of non-empty channels.
          items:
            maxLength: 64
            minLength: 1
            type: string
          type: array
      required:
      - items
      type: object
    QueueStats:
      description: The stats for a queue and its dead letter queue. If channelId is specified in request field, it will return channel specific stats response.
      properties:
        channelId:
          description: If channelId is present in GetStats call, the channel id will be returned in the GetStats response.
          maxLength: 64
          minLength: 1
          type: string
        consumerGroupId:
          description: If consumerGroupId is present in GetStats call, the consumer group id will be returned in the GetStats response.
          type: string
        dlq:
          $ref: '#/components/schemas/Stats'
        queue:
          $ref: '#/components/schemas/Stats'
      required:
      - queue
      - dlq
      type: object
    PutMessage:
      description: A message that has been published to a queue.
      properties:
        expireAfter:
          description: 'The time after which the message will be automatically deleted, expressed in [RFC 3339](https://tools.ietf.org/rfc/rfc3339) timestamp format.


            Example: `2018-04-20T00:00:07.405Z`

            '
          format: date-time
          type: string
        id:
          description: The ID of the message.
          format: int64
          type: integer
      required:
      - id
      type: object
    UpdateMessagesResult:
      description: The response to a UpdateMessages request. It indicates the number of server and client failures as well as an array of entries for successful and failed actions.
      properties:
        clientFailures:
          description: The number of messages that failed to be updated in the queue because of a client failure such as an invalid receipt or invalid `visibilityInSeconds`.
          type: integer
        entries:
          description: 'An array of items representing the result of each action.

            The order is guaranteed to be the same as in the `UpdateMessagesDetails` object.

            If a message was successfully updated in the queue, the entry includes the `id` and `visibleAfter` fields.

            If a message failed to be updated in the queue, the entry includes the `errorCode` and `errorMessage` fields.

            '
          items:
            $ref: '#/components/schemas/UpdateMessagesResultEntry'
          minItems: 1
          type: array
        serverFailures:
          description: The number of messages that failed to be updated in the queue because of a server failure.
          type: integer
      required:
      - serverFailures
      - clientFailures
      - entries
    UpdateMessageDetails:
      description: Updates the visibility of a message
      properties:
        visibilityInSeconds:
          description: The new visibility of the message relative to the current time (as-per the clock of the server receiving the request).
          maximum: 43200
          minimum: 0
          type: integer
      required:
      - visibilityInSeconds
      type: object
    DeleteMessagesDetailsEntry:
      description: Object that represents a message to delete from a queue.
      properties:
        receipt:
          description: The receipt of the message to delete.
          type: string
      required:
      - receipt
      type: object
    PutMessages:
      description: A list of the messages published to a queue.
      properties:
        messages:
          description: The messages that have been published to a queue.
          items:
            $ref: '#/components/schemas/PutMessage'
          minItems: 1
          type: array
      required:
      - messages
      type: object
    Stats:
      description: The stats for a queue or a dead letter queue.
      properties:
        inFlightMessages:
          description: The approximate number of messages delivered to a consumer but not yet deleted and so unavailable for re-delivery.
          format: int64
          type: integer
        sizeInBytes:
          description: The approximate size of the queue in bytes. Sum of the size of visible and in-flight messages.
          format: int64
          type: integer
        visibleMessages:
          description: The approximate number of visible messages (available for delivery) currently in the queue.
          format: int64
          type: integer
      required:
      - visibleMessages
      - inFlightMessages
      - sizeInBytes
      type: object
    PutMessagesDetailsEntry:
      description: Object that represents a message to publish into a queue.
      properties:
        content:
          description: The content of the message
          type: string
        metadata:
          $ref: '#/components/schemas/MessageMetadata'
      required:
      - content
      type: object
    UpdateMessagesResultEntry:
      description: 'Represents the result of a UpdateMessages request, whether it was successful or not.

        If a message was successfully updated in the queue, the entry includes the `id` and `visibleAfter` fields.

        If a message failed to be updated in the queue, the entry includes the `errorCode` and `errorMessage` fields.

        '
      properties:
        errorCode:
          description: The error code, in case the message was not successfully updated in the q

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# Full source: https://raw.githubusercontent.com/api-evangelist/oracle/refs/heads/main/openapi/oracle-queue-api-openapi.yml