# Perform Foundational Infrastructure Tasks in Google Cloud

**Cloud Storage: Qwik Start - Cloud Console**

:::success
**Insight**
1. Create a bucket
2. Upload an object into the bucket
3. Share a bucket publicly
4. Create folders
5. Delete a folder
:::

> Note: If you are prompted with Public access will be prevented, uncheck Enforce public access prevention on this bucket and click Confirm.

* Every bucket must have a unique name across the entire Cloud Storage namespace. True
* Object names must be unique only within a given bucket. True

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**Cloud Storage: Qwik Start - CLI/SDK**

:::success
**Insight**
1. Create a bucket
2. Upload an object into the bucket
3. Download an object from your bucket
4. Copy an object to a folder in the bucket
5. List contents of a bucket or folder
6. List details for an object
7. Make your object publicly accessible
8. Remove public access
:::

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**Cloud IAM: Qwik Start**

:::success
**Insight**
1. The IAM console and project level roles
2. The IAM console and project level roles
3. Explore editor roles
4. Prepare a resource for access testing
5. Remove project access
6. Add Storage permissions
7. Verify access
:::

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**Cloud Monitoring: Qwik Start**

:::success
**Insight**
1. Create a Compute Engine instance
2. Add Apache2 HTTP Server to your instance
3. Create an uptime check
4. Create an alerting policy
5. Create a dashboard and chart
6. View your logs
7. Check the uptime check results and triggered alerts
:::

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**Cloud Functions: Qwik Start - Console**

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**Insight**
1. Create a function
2. Deploy the function
3. Test the function
4. View logs
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* Cloud Functions is a serverless execution environment for event driven services on Google Cloud. True
* Which type of trigger is used while creating Cloud Function in the lab? HTTP

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**Cloud Functions: Qwik Start - Command Line**

:::success
**Insight**
1. Create a function
2. Create a cloud storage bucket
3. Deploy your function
4. Test the function
5. View logs
:::

* Serverless lets you write and deploy code without the hassle of managing the underlying infrastructure. True

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**Google Cloud Pub/Sub: Qwik Start - Console**

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**Insight**
1. Setting up Pub/Sub
2. Add a subscription
3. Test your understanding
4. Publish a message to the topic
5. View the message
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* A publisher application creates and sends messages to a "topic". Subscriber applications create a "subscription" to a topic to receive messages from it.
* Cloud Pub/Sub is an asynchronous messaging service designed to be highly reliable and scalable. True

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**Google Cloud Pub/Sub: Qwik Start - Command Line**

:::success
**Insight**
1. Pub/Sub topics
2. Pub/Sub subscriptions
3. Pub/Sub publishing and pulling a single message
4. Pub/Sub pulling all messages from subscriptions
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* To receive messages published to a topic, you must create a subscription to that topic. True

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**Google Cloud Pub/Sub: Qwik Start - Python**

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**Insight**
1. Create a virtual environment
2. Install the client library
3. Pub/Sub - the Basics
4. Create a topic
5. Create a subscription
6. Publish messages
7. View messages
:::

* Google Cloud Pub/Sub service allows applications to exchange messages reliably, quickly, and asynchronously. True
* A topic is a shared string that allows applications to connect with one another.

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**Perform Foundational Infrastructure Tasks in Google Cloud: Challenge Lab**

<!-- [Challenge Lab](https://youtu.be/XBQ1J18EOgI?feature=shared) -->

> Detailed Tutorial of Task — 1

1. Navigation menu > Cloud Storage > Browser > Create Bucket
2. Name your bucket > Enter GCP Project ID > Continue, ex: `qwiklabs-gcp-01-941843f49802-bucket`
3. Choose where to store your data > Region: ex: `us-east4` > Continue
4. Use default for the remaining
5. Create

> Detailed Tutorial of Task — 2

1. Navigation menu > Pub/Sub > Topics
2. Create Topic > Name: ex: `topic-memories-372` > Create Topic

> Detailed Tutorial of Task — 3

1. Navigation menu > Cloud Functions > Create Function
2. Use the following config: Name: memories-thumbnail-maker Region: us-west1
3. ==**Use default for the remaining**==
4. Set the **Entry point** to memories-thumbnail-maker
5. Add the following code to the `index.js`

const functions = require('@google-cloud/functions-framework');
const crc32 = require("fast-crc32c");
const { Storage } = require('@google-cloud/storage');
const gcs = new Storage();
const { PubSub } = require('@google-cloud/pubsub');
const imagemagick = require("imagemagick-stream");

functions.cloudEvent('memories-thumbnail-maker', cloudEvent => {
  const event = cloudEvent.data;

  console.log(`Event: ${event}`);
  console.log(`Hello ${event.bucket}`);

  const fileName = event.name;
  const bucketName = event.bucket;
  const size = "64x64"
  const bucket = gcs.bucket(bucketName);
  const topicName = "topic-memories-761";
  const pubsub = new PubSub();
  if ( fileName.search("64x64_thumbnail") == -1 ){
    // doesn't have a thumbnail, get the filename extension
    var filename_split = fileName.split('.');
    var filename_ext = filename_split[filename_split.length - 1];
    var filename_without_ext = fileName.substring(0, fileName.length - filename_ext.length );
    if (filename_ext.toLowerCase() == 'png' || filename_ext.toLowerCase() == 'jpg'){
      // only support png and jpg at this point
      console.log(`Processing Original: gs://${bucketName}/${fileName}`);
      const gcsObject = bucket.file(fileName);
      let newFilename = filename_without_ext + size + '_thumbnail.' + filename_ext;
      let gcsNewObject = bucket.file(newFilename);
      let srcStream = gcsObject.createReadStream();
      let dstStream = gcsNewObject.createWriteStream();
      let resize = imagemagick().resize(size).quality(90);
      srcStream.pipe(resize).pipe(dstStream);
      return new Promise((resolve, reject) => {
        dstStream
          .on("error", (err) => {
            console.log(`Error: ${err}`);
            reject(err);
          })
          .on("finish", () => {
            console.log(`Success: ${fileName} → ${newFilename}`);
              // set the content-type
              gcsNewObject.setMetadata(
              {
                contentType: 'image/'+ filename_ext.toLowerCase()
              }, function(err, apiResponse) {});
              pubsub
                .topic(topicName)
                .publisher()
                .publish(Buffer.from(newFilename))
                .then(messageId => {
                  console.log(`Message ${messageId} published.`);
                })
                .catch(err => {
                  console.error('ERROR:', err);
                });
          });
      });
    }
    else {
      console.log(`gs://${bucketName}/${fileName} is not an image I can handle`);
    }
  }
  else {
    console.log(`gs://${bucketName}/${fileName} already has a thumbnail`);
  }
});

5. Add the following code to the `package.json`

{
  "name": "thumbnails",
  "version": "1.0.0",
  "description": "Create Thumbnail of uploaded image",
  "scripts": {
    "start": "node index.js"
  },
  "dependencies": {
    "@google-cloud/functions-framework": "^3.0.0",
    "@google-cloud/pubsub": "^2.0.0",
    "@google-cloud/storage": "^5.0.0",
    "fast-crc32c": "1.0.4",
    "imagemagick-stream": "4.1.1"
  },
  "devDependencies": {},
  "engines": {
    "node": ">=4.3.2"
  }
}

> Detailed Tutorial of Task — 4

1. Navigation menu > IAM & Admin > IAM
1. Search for the "Username 2" > Edit > Delete Role