Files

Kubemq files target connector allows services using kubemq server to access files messaging services.

Prerequisites

The following are required to run the files target connector:

• kubemq cluster

• Azure active storage account

• Azure active with storage enable - with access account

• kubemq-targets deployment

Configuration

files target connector configuration properties:

Properties Key	Required	Description	Example
storage_account	yes	azure storage account name	"my_account"
storage_access_key	yes	azure storage access key	"abcd1234"
policy	no	exponential or linear	"retry_policy_exponential",default(retry_policy_exponential)
max_tries	no	request max tries (1 disable)	"1",default(1)
try_timeout	no	Maximum time allowed for any single try	"3000",default(10000) milliseconds
retry_delay	no	Backoff amount for each retry	"1000",default(600) milliseconds
max_retry_delay	no	delay between retries	"1000",default(1800) milliseconds

Example:

bindings:
  - name: kubemq-query-azure-files
    source:
      kind: kubemq.query
      name: kubemq-query
      properties:
        address: "kubemq-cluster:50000"
        client_id: "kubemq-query-azure-files-connector"
        auth_token: ""
        channel: "azure.storage.files"
        group:   ""
        concurrency: "1"
        auto_reconnect: "true"
        reconnect_interval_seconds: "1"
        max_reconnects: "0"
    target:
      kind: azure.storage.files
      name: azure-storage-files
      properties:
        storage_account: "id"
        storage_access_key: "key"

Usage

Create

Create metadata setting:

Metadata Key	Required	Description	Possible values
method	yes	type of method	"create"
service_url	yes	service url path and filename	"https://test.files.core.windows.net/test/test.txt"
size	no	max file size	"2000",default(1000000)

{
  "metadata": {
    "method": "create",
    "service_url": "https://test.end.point.test.net/test/test.txt"
  },
  "data": "bXktZmlsZS1kYXRh"
}

Upload

Upload metadata setting:

Metadata Key	Required	Description	Possible values
method	yes	type of method	"upload"
service_url	yes	service url path and filename	"https://test.files.core.windows.net/test/test.txt"
data	yes	file data (byte array)	"bXktZmlsZS1kYXRh"
range_size	no	specifies the range size to use in bytes	"0" ,default(4194304)
parallelism	no	maximum number of ranges to upload in parallel	"upload",default(0)
file_metadata	no	key value string string file Metadata	"{"tag":"test","name":"myname"}",default(none)

Example:

{
  "metadata": {
    "method": "upload",
    "service_url": "https://test.end.point.test.net/test/test.txt"
  },
  "data": "bXktZmlsZS1kYXRh"
}

Get

Get metadata setting:

Metadata Key	Required	Description	Possible values
method	yes	type of method	"get"
service_url	yes	service url path and filename	"https://test.files.core.windows.net/test"
max_retry_request	no	max retry count	"20" (default "1")
count	no	number of files to get	"20" (will get all from offset)
offset	no	start reading files from offset	"20" (will start from the first byte in files)

Example:

{
  "metadata": {
    "method": "get",
    "service_url": "https://test.end.point.test.net/test/test.txt"
  },
  "data": null
}

Delete

Delete metadata setting:

Metadata Key	Required	Description	Possible values
method	yes	type of method	"delete"
file_name	yes	the name of the file to delete	"myfile.txt"
service_url	yes	service url path and filename	"https://test.files.core.windows.net/test/test.txt"

Example:

{
  "metadata": {
    "method": "delete",
    "service_url": "https://test.end.point.test.net/test"
  },
  "data": null
}