business process automation with google app engine and google data apis
DESCRIPTION
Google App Engine provides a cloud computing platform for running scalable web applications and provides many APIs to help orchestrate business processes. Google Data APIs provides several ways to interact with Google's services. This talk will explore ways to automate business processes using Google App Engine specific APIs such as Task Queues and Backends coupled with Google Data APIs, specifically Google Docs and Google Spreadsheets.TRANSCRIPT
Automating Business with Google APIs
David Hodge
Thursday, March 7, 13
Thursday, March 7, 13
Thursday, March 7, 13
Thursday, March 7, 13
Thursday, March 7, 13
We automate business processes using cloud computing and
machine learning.
Dave & Bediako
Thursday, March 7, 13
IAAS and PAAS
- Amazon, Google, Microsoft
- DevOps, NoOps, OOPs
- Beware single point of failure - read SLAs
Thursday, March 7, 13
Google Docs Drive
• Google Docs API deprecated
• Google Drive Polyglot API - .NET, Java, Dart, Go, GWT, Java, Javascript, Objective-C, PHP, Python, Ruby
• ReSTful API - create and manage documents
Thursday, March 7, 13
Google Spreadsheets API
• Spreadsheets, Worksheets, List Row, Cell
• Create, Delete, Share
• List Based Feeds vs Cell Based Feeds
• Updating multiple cells with Batch
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Google Spreadsheets API
• Gotchas
• Queries - age > 25 and height < 175
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Google Apps Scripts
• Javascript cloud scripting language
• Automate workflows
• Customize spreadsheets
• Schedule Tasks
• Save data using Spreadsheets, JDBC, ScriptDB
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Google App Engine
Thursday, March 7, 13
Google App Engine
Backends
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Google App Engine
Backends
Storing Data
Thursday, March 7, 13
Google App Engine
Backends
Storing Data
Blobstore
Thursday, March 7, 13
Google App Engine
Backends
Storing Data
BlobstoreApp
Identity
Thursday, March 7, 13
Google App Engine
Backends
Storing Data
BlobstoreApp
Identity
Google Cloud
Storage
Thursday, March 7, 13
Google App Engine
Backends
Storing Data
BlobstoreApp
Identity
Google Cloud
Storage
Capabilities
Thursday, March 7, 13
Google App Engine
Backends
Storing Data
BlobstoreApp
Identity
Google Cloud
Storage
Capabilities Channel
Thursday, March 7, 13
Google App Engine
Backends
Storing Data
BlobstoreApp
Identity
Google Cloud
Storage
Capabilities Channel Endpoints
Thursday, March 7, 13
Google App Engine
Backends
Storing Data
BlobstoreApp
Identity
Google Cloud
Storage
Capabilities Channel Endpoints
Images
Thursday, March 7, 13
Google App Engine
Backends
Storing Data
BlobstoreApp
Identity
Google Cloud
Storage
Capabilities Channel Endpoints
Images Logs
Thursday, March 7, 13
Google App Engine
Backends
Storing Data
BlobstoreApp
Identity
Google Cloud
Storage
Capabilities Channel Endpoints
Images Logs Mail
Thursday, March 7, 13
Google App Engine
Backends
Storing Data
BlobstoreApp
Identity
Google Cloud
Storage
Capabilities Channel Endpoints
Images Logs Mail
Memcache
Thursday, March 7, 13
Google App Engine
Backends
Storing Data
BlobstoreApp
Identity
Google Cloud
Storage
Capabilities Channel Endpoints
Images Logs Mail
Memcache Multitenancy
Thursday, March 7, 13
Google App Engine
Backends
Storing Data
BlobstoreApp
Identity
Google Cloud
Storage
Capabilities Channel Endpoints
Images Logs Mail
Memcache Multitenancy OAuth
Thursday, March 7, 13
Google App Engine
Backends
Storing Data
BlobstoreApp
Identity
Google Cloud
Storage
Capabilities Channel Endpoints
Images Logs Mail
Memcache Multitenancy OAuth
Prospective Search
Thursday, March 7, 13
Google App Engine
Backends
Storing Data
BlobstoreApp
Identity
Google Cloud
Storage
Capabilities Channel Endpoints
Images Logs Mail
Memcache Multitenancy OAuth
Prospective Search
Search
Thursday, March 7, 13
Google App Engine
Backends
Storing Data
BlobstoreApp
Identity
Google Cloud
Storage
Capabilities Channel Endpoints
Images Logs Mail
Memcache Multitenancy OAuth
Prospective Search
Search
Task Queues
Thursday, March 7, 13
Google App Engine
Backends
Storing Data
BlobstoreApp
Identity
Google Cloud
Storage
Capabilities Channel Endpoints
Images Logs Mail
Memcache Multitenancy OAuth
Prospective Search
Search
Task Queues
Users
Thursday, March 7, 13
Google App Engine
Backends
Storing Data
BlobstoreApp
Identity
Google Cloud
Storage
Capabilities Channel Endpoints
Images Logs Mail
Memcache Multitenancy OAuth
Prospective Search
Search
Task Queues
Users
XMPP
Thursday, March 7, 13
One does not simply
Automate using Google APIs
Thursday, March 7, 13
How we build softwareA Customerhas a nick namehas a full namehas a date of birthhas a social security number which is sensitivecan be viewed or created or changed by a customer service representative
An Orderbelongs to a Customerhas a descriptioncan be viewed or created or changed by a customer service representative
An Order Line Item is auditedbelongs to an Orderhas a descriptionhas a price which is a numbercan be viewed or created or changed by a customer service representative
Dictation + Airlift on Google App Engine
Thursday, March 7, 13
Current processes manual and paper based for recording line items for accounts receivable and accounts payable.
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Customer Widgets Spreadsheets
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Widget Maker Spreadsheets
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Evolution One - Cron<?xml version="1.0" encoding="UTF-8"?><cronentries> <cron> <url>/accounting/receivable</url> <description>Process widgets sold for accounting line items</description> <schedule>every day 12:30</schedule> <timezone>America/New_York</timezone> </cron> <cron> <url>/accounting/payable</url> <description>Process line items for widget making workers</description> <schedule>every day 03:30</schedule> <timezone>America/New_York</timezone> </cron></cronentries>
Thursday, March 7, 13
Evolution Two - Backends
• Use Backends to process long lived requests - No Request Deadlines
• Higher CPU up to 4.8GHz and Memory limits - up to 1GB
• Also using Spreadsheet Batch
Thursday, March 7, 13
Evolution Two - Backends
• Dynamic vs Resident - Dynamic Backends become alive only on request and are turned off when idle
Thursday, March 7, 13
Evolution Two - Backends
<backends> <backend name="accounting"> <options> <dynamic>true</dynamic> <fail-fast>true</fail-fast> <class>B8</class> </options> </backend></backends>
backends.xml
<?xml version="1.0" encoding="UTF-8"?><cronentries> <cron> <url>/accounting/receivable</url> <description>Process widgets sold for accounting line items</description> <schedule>every 20 minutes</schedule> <timezone>America/New_York</timezone>
<target>accounting</target> </cron> <cron> <url>/accounting/payable</url> <description>Process line items for widget making workers</description> <schedule>every 40 minutes</schedule> <timezone>America/New_York</timezone>
<target>accounting</target> </cron></cronentries>
cron.xml
Thursday, March 7, 13
Task Queues work discretely on a unit of work
Push - processes tasks based on rate configuration, auto scales
Pull - allows for specific time and timeframe to run
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Task Push Config<queue-entries> <queue> <name>fooqueue</name> <rate>1/s</rate>
<bucket-size>40</bucket-size> <max-concurrent-requests>1</max-concurrent-requests> <retry-parameters> <task-retry-limit>7</task-retry-limit> <task-age-limit>2</task-age-limit> </retry-parameters> </queue> <queue> <name>barqueue</name> <rate>1/s</rate> <retry-parameters> <min-backoff-seconds>10</min-backoff-seconds> <max-backoff-seconds>200</max-backoff-seconds> <max-doublings>0</max-doublings> </retry-parameters> </queue> </queue-entries>
queue.xml
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Task Queue Headers
• X-AppEngine-QueueName, the name of the queue (possibly default)• X-AppEngine-TaskName, the name of the task, or a system-generated
unique ID if no name was specified• X-AppEngine-TaskRetryCount, the number of times this task has
been retried; for the first attempt, this value is 0. This number includes attempts where the task failed due to a lack of available instances and never reached the execution phase.
• X-AppEngine-TaskExecutionCount, the number of times this task has previously failed during the execution phase. This number does not include failures due to a lack of available instances.
• X-AppEngine-TaskETA, the target execution time of the task, specified in microseconds since January 1st 1970.
Thursday, March 7, 13
Task Push Queues
import com.google.appengine.api.taskqueue.Queue;import com.google.appengine.api.taskqueue.QueueFactory;import static com.google.appengine.api.taskqueue.TaskOptions.Builder.*;
//Discrete job for processing single widget to write customer line item Queue queue = QueueFactory.getDefaultQueue(); queue.add(withUrl("/widgetorderforcustomerjob").param("widgetKey", key));
//Discrete job for processing single widget to write vendor line item queue.add(withUrl("/widgetorderforvendorjob").param("widgetKey", key));
Thursday, March 7, 13
Google DocsGoogle App Engine
Automation Achieved
Receivable Line Items Job
Payable Line Items Job
Google Spreadsheet
Line Items Per Client
Google Spreadsheet
Line Items Per Vendor
Invoices
Payments
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Experiment
EvolveArchitecture
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Support
• Google Plus Hangouts
• Google Forums
• Fellow Developers
Thursday, March 7, 13
Some More Tips
• Python: Bulk Loader Tool to download/upload data - good for any flavor of GAE
• Get involved - NoOps doesn’t mean you don’t have to know your technology stack
• https://github.com/LucidTechnics/google-apps-util
• https://code.google.com/p/googleappengine/wiki/WillItPlayInJava
Thursday, March 7, 13
“Using no way as a way, having no limitation as limitation.”
- Bruce Lee
Thursday, March 7, 13
Official White House Photo by Pete SouzaThursday, March 7, 13
David Hodge@davezen1
Thursday, March 7, 13