Class: HerdstWorker::Configuration::Metadata

Inherits:
Object
  • Object
show all
Defined in:
lib/herdst_worker/configuration/metadata.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(env, name, config) ⇒ Metadata

Returns a new instance of Metadata.



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# File 'lib/herdst_worker/configuration/metadata.rb', line 35

def initialize(env, name, config)
    self.config = config
    self.config_suffix = "-#{name}-service-config"
    self.secrets_suffix = "-#{name}-service-secrets"
    
    self.secrets = {}.with_indifferent_access
    self.secrets["ENV"] = env
    self.secret_json_keys = ["STRIPE_PLANS"]

    Aws::Credentials.include HerdstWorker::ExpiringCredentials

    begin
        self.reload!
    rescue Exception => ex
        if self.is_prod?
            puts "Failed to load metadata: #{ex.message}"
        else
            raise ex
        end
    end
end

Instance Attribute Details

#aws_credentials ⇒ Object

Returns the value of attribute aws_credentials.



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# File 'lib/herdst_worker/configuration/metadata.rb', line 31

def aws_credentials
  @aws_credentials
end

#config ⇒ Object

Returns the value of attribute config.



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# File 'lib/herdst_worker/configuration/metadata.rb', line 31

def config
  @config
end

#config_suffix ⇒ Object

Returns the value of attribute config_suffix.



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# File 'lib/herdst_worker/configuration/metadata.rb', line 32

def config_suffix
  @config_suffix
end

#secret_json_keys ⇒ Object

Returns the value of attribute secret_json_keys.



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# File 'lib/herdst_worker/configuration/metadata.rb', line 32

def secret_json_keys
  @secret_json_keys
end

#secrets ⇒ Object

Returns the value of attribute secrets.



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# File 'lib/herdst_worker/configuration/metadata.rb', line 31

def secrets
  @secrets
end

#secrets_suffix ⇒ Object

Returns the value of attribute secrets_suffix.



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# File 'lib/herdst_worker/configuration/metadata.rb', line 32

def secrets_suffix
  @secrets_suffix
end

Instance Method Details

#[](key) ⇒ Object 



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# File 'lib/herdst_worker/configuration/metadata.rb', line 72

def [](key)
    self.secrets[key.to_s.upcase]
end

#[]=(key, value) ⇒ Object 



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# File 'lib/herdst_worker/configuration/metadata.rb', line 77

def []=(key, value)
    self.secrets[key.to_s.upcase] = value
end

#get_aws_credentials ⇒ Object 



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# File 'lib/herdst_worker/configuration/metadata.rb', line 82

def get_aws_credentials
    self.get_aws_credentials! rescue nil
end

#get_aws_credentials! ⇒ Object 



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# File 'lib/herdst_worker/configuration/metadata.rb', line 123

def get_aws_credentials!
    credentials = self.is_prod? ? 
         make_request!(get_credentials_uri) :
         self.config.config_for(:aws)
    
    expiry_time = (Time.parse(credentials["Expiration"]).utc - 5.minutes) rescue (Time.now.utc + 1.hour)

    # Set credential info
    self.aws_credentials = Aws::Credentials.new(
        credentials["AccessKeyId"], 
        credentials["SecretAccessKey"], 
        credentials["Token"]
    )
    self.aws_credentials.set_expiry(expiry_time.to_i)

    # Set global config
    Aws.config.update(
        region: self.get_aws_region(credentials),
        credentials: self.aws_credentials
    )

    if self.is_prod?
        # Refresh the credentials just before the expiry time
        expiry_in_seconds = (expiry_time - Time.now.utc).to_i
        expiry_in_seconds = 60 if expiry_in_seconds < 60

        Concurrent::ScheduledTask.execute(expiry_in_seconds) do
            self.get_aws_credentials
        end
    end

    self.aws_credentials
end

#get_aws_region(credentials = nil) ⇒ Object 



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# File 'lib/herdst_worker/configuration/metadata.rb', line 158

def get_aws_region(credentials = nil)
    default_region = "ap-southeast-2"
    
    if self.is_prod?            
        self["AWS_REGION"] = (ENV["AWS_REGION"] || default_region)
    else
        self["AWS_REGION"] = credentials && credentials["Region"] || default_region
    end
end

#get_secrets ⇒ Object 



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# File 'lib/herdst_worker/configuration/metadata.rb', line 67

def get_secrets
    self.secrets
end

#get_services_info ⇒ Object 



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# File 'lib/herdst_worker/configuration/metadata.rb', line 105

def get_services_info
    info = self.get_tasks_info

    ecs_client = Aws::ECS::Client.new(
        :region => self.secrets["AWS_REGION"],
        :credentials => self.aws_credentials
    )

    ecs_client.describe_services({
        :cluster => info["tasks"][0]["cluster_arn"],
        :services => [
            info["tasks"][0]["group"].to_s.sub("service:", "")
        ],
        :include => ["TAGS"]
    })
end

#get_tasks_info ⇒ Object 



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# File 'lib/herdst_worker/configuration/metadata.rb', line 87

def get_tasks_info
    metadata = make_request!(get_task_metadata_uri)

    ecs_client = Aws::ECS::Client.new(
        :region => self.secrets["AWS_REGION"],
        :credentials => self.aws_credentials
    )
    
    ecs_client.describe_tasks(
        :cluster => metadata["Cluster"],
        :tasks => [
            metadata["TaskARN"]
        ],
        :include => ["TAGS"]
    )
end

#reload! ⇒ Object 



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# File 'lib/herdst_worker/configuration/metadata.rb', line 58

def reload!
    self.get_aws_credentials!
    self.set_task_info!
    self.get_config_and_secrets!
    
    self
end