You should be able to
go get -u github.com/jbarratt/awsprice/...
and end up with an awsprice binary. (Which, as of now, has very limited functionality.)
Make it quick and easy to figure out prices for AWS configurations.
This is done via a simple grammar, like
$ awsprice '2 * m4.xlarge + db.t2.medium(engine=mariadb) + elb(transfer=500GB)'
(Warning, not yet implemented.)
The goal is to have a common engine power potentially a few different interfaces:
- A command line tool
$ awsprice c3.xlarge - A slackbot:
@awsprice ebs(500G) - A single page webapp, with pretty/shareable HTML results
The tools are built on the AWS Price List API.
Internally, it goes through a few phases:
- Fetching raw JSON offer data
- Processing that data into a format optimized for lookups
- Querying the data via the DSL/Grammar
- Presenting the results in various ways
- Initial CLI framework ✔
- awsprice fetch ✔
- awsprice process (optional -o 'db file') ✔
- Simple lookup of EC2 information (only single region, no options) ✔
- via CLI ✔
- With wildcard matching ✔
- initial slackbot deploy (with cached data) ✔ ([awspricebot|http://github.com/jbaratt/awspricebot])
- 'help' ✔
- Additional EC2 dimensions (region) ✔
- Basic RDS (region, multi-az, engine) ✔
- Basic calculator support (+, -, parenthesis grouping)
- EBS support
- ELB support (including data transfer)
- S3 support (GB)
- RDS support (region, multi-az, engine, storage dimensions)
- Cloudfront Support (transfer, price class)
- EC2 Transit support
- S3 transit support
- 'vs' operator (comparing 2 stacks with each other)
- EC2 OS
At the top level, the parser will identify an 'Offer' token, with a set of optional k=v arguments.
db.r3.xlarge(engine=mariadb)
There is a high level dispatch table: - given an identifier name - return the offer type
The dispatch table will then call the proper New{}Offer method, passing the arguments in.
It will 'mix in' any of the global arguments, as well. For example
2 x m4.xlarge(os=Windows) region=us-west-1
would
-
Look up m4.xlarge and discover it's an EC2 type
-
Construct a new EC2Offer, with {'os': 'Windows', 'region': 'us-west-1'} as arguments
type OfferType int const ( EC2 OfferType = iota RDS )
// when a new one is added link it in here map[string]OfferType
// and construct a NewEC2OfferParam(k_v) EC2OfferParam { Name Region Os } map[EC2OfferParam]EC2Offer EC2Offer
The Offers all implement the Offer interface, which has some standard methods
Type() string
Description() string
Hourly() float64
This allows them to be displayed & totaled as needed.
StoreEC2(name string, params map[string]string, EC2Offer)
StoreRDS(name string, params map[string]string, RDSOffer)
Load(name string, params map[string]string) Offer
Search(name string, params map[string]string) []Offer