v2/postgresql-to-googlecloud/terraform/Jdbc_to_PubSub/dataflow_job.tf

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# Copyright (C) 2024 Google LLC
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# Licensed under the Apache License, Version 2.0 (the "License"); you may not
# use this file except in compliance with the License. You may obtain a copy of
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#   http://www.apache.org/licenses/LICENSE-2.0
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variable "on_delete" {
  type        = string
  description = "One of \"drain\" or \"cancel\". Specifies behavior of deletion during terraform destroy."
}

variable "project" {
  type        = string
  description = "The Google Cloud Project ID within which this module provisions resources."
}

variable "region" {
  type        = string
  description = "The region in which the created job should run."
}

variable "driverClassName" {
  type        = string
  description = "JDBC driver class name to use. (Example: com.mysql.jdbc.Driver)"

}

variable "connectionUrl" {
  type        = string
  description = "Url connection string to connect to the JDBC source. Connection string can be passed in as plaintext or as a base64 encoded string encrypted by Google Cloud KMS. (Example: jdbc:mysql://some-host:3306/sampledb)"

}

variable "username" {
  type        = string
  description = "User name to be used for the JDBC connection. User name can be passed in as plaintext or as a base64 encoded string encrypted by Google Cloud KMS."
  default     = null
}

variable "password" {
  type        = string
  description = "Password to be used for the JDBC connection. Password can be passed in as plaintext or as a base64 encoded string encrypted by Google Cloud KMS."
  default     = null
}

variable "driverJars" {
  type        = string
  description = "Comma separate Cloud Storage paths for JDBC drivers. (Example: gs://your-bucket/driver_jar1.jar,gs://your-bucket/driver_jar2.jar)"

}

variable "connectionProperties" {
  type        = string
  description = "Properties string to use for the JDBC connection. Format of the string must be [propertyName=property;]*. (Example: unicode=true;characterEncoding=UTF-8)"
  default     = null
}

variable "query" {
  type        = string
  description = "Query to be executed on the source to extract the data. (Example: select * from sampledb.sample_table)"

}

variable "outputTopic" {
  type        = string
  description = "The name of the topic to which data should published, in the format of 'projects/your-project-id/topics/your-topic-name' (Example: projects/your-project-id/topics/your-topic-name)"

}

variable "KMSEncryptionKey" {
  type        = string
  description = "If this parameter is provided, password, user name and connection string should all be passed in encrypted. Encrypt parameters using the KMS API encrypt endpoint. See: https://cloud.google.com/kms/docs/reference/rest/v1/projects.locations.keyRings.cryptoKeys/encrypt (Example: projects/your-project/locations/global/keyRings/your-keyring/cryptoKeys/your-key)"
  default     = null
}

variable "disabledAlgorithms" {
  type        = string
  description = "Comma-separated algorithms to disable. If this value is set to `none` then no algorithm is disabled. Use with care, because the algorithms that are disabled by default are known to have either vulnerabilities or performance issues. (Example: SSLv3, RC4)"
  default     = null
}

variable "extraFilesToStage" {
  type        = string
  description = "Comma separated Cloud Storage paths or Secret Manager secrets for files to stage in the worker. These files will be saved under the `/extra_files` directory in each worker (Example: gs://your-bucket/file.txt,projects/project-id/secrets/secret-id/versions/version-id)"
  default     = null
}


provider "google" {
  project = var.project
}

provider "google-beta" {
  project = var.project
}

variable "additional_experiments" {
  type        = set(string)
  description = "List of experiments that should be used by the job. An example value is  'enable_stackdriver_agent_metrics'."
  default     = null
}

variable "autoscaling_algorithm" {
  type        = string
  description = "The algorithm to use for autoscaling"
  default     = null
}

variable "enable_streaming_engine" {
  type        = bool
  description = "Indicates if the job should use the streaming engine feature."
  default     = null
}

variable "ip_configuration" {
  type        = string
  description = "The configuration for VM IPs. Options are 'WORKER_IP_PUBLIC' or 'WORKER_IP_PRIVATE'."
  default     = null
}

variable "kms_key_name" {
  type        = string
  description = "The name for the Cloud KMS key for the job. Key format is: projects/PROJECT_ID/locations/LOCATION/keyRings/KEY_RING/cryptoKeys/KEY"
  default     = null
}

variable "labels" {
  type        = map(string)
  description = "User labels to be specified for the job. Keys and values should follow the restrictions specified in the labeling restrictions page. NOTE: This field is non-authoritative, and will only manage the labels present in your configuration.				Please refer to the field 'effective_labels' for all of the labels present on the resource."
  default     = null
}

variable "launcher_machine_type" {
  type        = string
  description = "The machine type to use for launching the job. The default is n1-standard-1."
  default     = null
}

variable "machine_type" {
  type        = string
  description = "The machine type to use for the job."
  default     = null
}

variable "max_workers" {
  type        = number
  description = "The maximum number of Google Compute Engine instances to be made available to your pipeline during execution, from 1 to 1000."
  default     = null
}

variable "name" {
  type = string
}

variable "network" {
  type        = string
  description = "The network to which VMs will be assigned. If it is not provided, 'default' will be used."
  default     = null
}

variable "num_workers" {
  type        = number
  description = "The initial number of Google Compute Engine instances for the job."
  default     = null
}

variable "sdk_container_image" {
  type        = string
  description = "Docker registry location of container image to use for the 'worker harness. Default is the container for the version of the SDK. Note this field is only valid for portable pipelines."
  default     = null
}

variable "service_account_email" {
  type        = string
  description = "The Service Account email used to create the job."
  default     = null
}

variable "skip_wait_on_job_termination" {
  type        = bool
  description = "If true, treat DRAINING and CANCELLING as terminal job states and do not wait for further changes before removing from terraform state and moving on. WARNING: this will lead to job name conflicts if you do not ensure that the job names are different, e.g. by embedding a release ID or by using a random_id."
  default     = null
}

variable "staging_location" {
  type        = string
  description = "The Cloud Storage path to use for staging files. Must be a valid Cloud Storage URL, beginning with gs://."
  default     = null
}

variable "subnetwork" {
  type        = string
  description = "The subnetwork to which VMs will be assigned. Should be of the form 'regions/REGION/subnetworks/SUBNETWORK'."
  default     = null
}

variable "temp_location" {
  type        = string
  description = "The Cloud Storage path to use for temporary files. Must be a valid Cloud Storage URL, beginning with gs://."
  default     = null
}

resource "google_project_service" "required" {
  service            = "dataflow.googleapis.com"
  disable_on_destroy = false
}

resource "google_dataflow_flex_template_job" "generated" {
  depends_on              = [google_project_service.required]
  provider                = google-beta
  container_spec_gcs_path = "gs://dataflow-templates-${var.region}/latest/flex/Jdbc_to_PubSub"
  parameters = {
    driverClassName      = var.driverClassName
    connectionUrl        = var.connectionUrl
    username             = var.username
    password             = var.password
    driverJars           = var.driverJars
    connectionProperties = var.connectionProperties
    query                = var.query
    outputTopic          = var.outputTopic
    KMSEncryptionKey     = var.KMSEncryptionKey
    disabledAlgorithms   = var.disabledAlgorithms
    extraFilesToStage    = var.extraFilesToStage
  }

  additional_experiments       = var.additional_experiments
  autoscaling_algorithm        = var.autoscaling_algorithm
  enable_streaming_engine      = var.enable_streaming_engine
  ip_configuration             = var.ip_configuration
  kms_key_name                 = var.kms_key_name
  labels                       = var.labels
  launcher_machine_type        = var.launcher_machine_type
  machine_type                 = var.machine_type
  max_workers                  = var.max_workers
  name                         = var.name
  network                      = var.network
  num_workers                  = var.num_workers
  sdk_container_image          = var.sdk_container_image
  service_account_email        = var.service_account_email
  skip_wait_on_job_termination = var.skip_wait_on_job_termination
  staging_location             = var.staging_location
  subnetwork                   = var.subnetwork
  temp_location                = var.temp_location
  region                       = var.region
}

output "dataflow_job_url" {
  value = "https://console.cloud.google.com/dataflow/jobs/${var.region}/${google_dataflow_flex_template_job.generated.job_id}"
}