splitdump

package
v0.0.17-rc5 Latest Latest
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Published: Apr 1, 2020 License: Apache-2.0 Imports: 15 Imported by: 0

Documentation

Overview

Package splitdump nibble large CAI dumps into PubSub asset feed messages

One dump line = one PubSub message.

Triggered by

Google Cloud Storage event when a new dump is delivered.

Instances

Only one.

Output

- PubSub messages formated like Cloud Asset Inventory real-time feed messages.

- Delivered in the same topics as used per CAI real-time.

- Tags to differentiate them from CAI real time feeds.

- Create missing topics en the fly (best effort) in case it does not already exist for real-time.

Cardinality

One-many: one dump is nubbled in many feed messages.

To ensure scallabilty the function is recurssive:

- If dump size > x lines then segments the dumo into child dumps of x lines.

- else nibble the dump, one dump line = one PubSub message.

- x is set through an environment variable, e.g. 1000.

Automatic retrying

Yes.

Is recurssive

Yes.

Required environment variables

- CAIEXPORTBUCKETNAME the name of the GCS bucket where are delivered the CAI dumps.

- IAMTOPICNAME the name of the topic used for all IAM policies feed messages.

Implementation example

package p
import (
    "context"

    "github.com/BrunoReboul/ram/services/splitdump"
    "github.com/BrunoReboul/ram/utilities/ram"
)
var global splitdump.Global
var ctx = context.Background()

// EntryPoint is the function to be executed for each cloud function occurence
func EntryPoint(ctxEvent context.Context, gcsEvent ram.GCSEvent) error {
    return splitdump.EntryPoint(ctxEvent, PubSubMessage, &global)
}

func init() {
    splitdump.Initialize(ctx, &global)
}

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func EntryPoint

func EntryPoint(ctxEvent context.Context, gcsEvent ram.GCSEvent, global *Global) error

EntryPoint is the function to be executed for each cloud function occurence

func Initialize

func Initialize(ctx context.Context, global *Global)

Initialize is to be executed in the init() function of the cloud function to optimize the cold start

Types

type Global

type Global struct {
	// contains filtered or unexported fields
}

Global structure for global variables to optimize the cloud function performances

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