Merge pull request coinbase#7 from coinbase/patrick/server-sdk

Add Server, Client, and Models Package

.gitignore

@@ -1,2 +1,6 @@
 c.out
 coverage.html
+
+examples/server/server
+examples/client/client
+examples/fetcher/fetcher

Makefile

@@ -1,7 +1,10 @@
 .PHONY: deps gen lint format check-format test test-coverage add-license \
 	check-license shorten-lines shellcheck salus release
 LICENCE_SCRIPT=addlicense -c "Coinbase, Inc." -l "apache" -v
-TEST_SCRIPT=go test -v ./asserter/... ./fetcher/... ./gen/...
+GO_PACKAGES=./asserter/... ./fetcher/... ./models/... ./client/... ./server/...
+GO_FOLDERS=$(shell echo ${GO_PACKAGES} | sed -e "s/\.\///g" | sed -e "s/\/\.\.\.//g")
+TEST_SCRIPT=go test -v ${GO_PACKAGES}
+LINT_SETTINGS=golint,misspell,gocyclo,gocritic,whitespace,goconst,gocognit,bodyclose,unconvert,lll,unparam
 
 deps:
 	go get ./...
@@ -14,9 +17,12 @@ deps:
 gen:
 	./codegen.sh
 
-lint:
-	golangci-lint run -v \
-		-E golint,misspell,gocyclo,gocritic,whitespace,goconst,gocognit,bodyclose,unconvert,lll,unparam,gomnd
+lint-examples:
+	cd examples; \
+	golangci-lint run -v -E ${LINT_SETTINGS}
+
+lint: | lint-examples
+	golangci-lint run -v -E ${LINT_SETTINGS},gomnd
 
 format:
 	gofmt -s -w -l .
@@ -38,7 +44,7 @@ check-license:
 	${LICENCE_SCRIPT} -check .
 
 shorten-lines:
-	golines -w --shorten-comments asserter fetcher gen 
+	golines -w --shorten-comments ${GO_FOLDERS} examples
 
 shellcheck:
 	shellcheck codegen.sh

README.md

@@ -18,30 +18,24 @@ in this specification will enable exchanges, block explorers,
 and wallets to integrate with much less communication overhead
 and network-specific work.
 
-## Versioning
-- Rosetta version: 1.3.0
-
-## Installation
-
-```shell
-go get github.com/coinbase/rosetta-sdk-go
-```
-
-## Automatic Assertion
-When using the helper methods to access a Rosetta Server (in `fetcher/*.go`),
-responses from the server are automatically checked for adherence to
-the Rosetta Interface. For example, if a `BlockIdentifer` is returned without a
-`Hash`, the fetch will fail. Take a look at the tests in `asserter/*_test.go`
-if you are curious about what exactly is asserted.
-
-_It is possible, but not recommended, to bypass this assertion using the
-`unsafe` helper methods available in `fetcher/*.go`._
+## Packages
+* [Models](models): Auto-generated Rosetta models
+* [Client](client): Low-level communication with any Rosetta server
+* [Server](server): Simplified Rosetta server development
+* [Asserter](asserter): Validation of Rosetta models
+* [Fetcher](fetcher): Simplified and validated communication with
+any Rosetta server
+
+## Examples
+The packages listed above are demoed extensively in
+[examples](examples) and are utilized throughout the
+[Rosetta Validator](https://github.com/coinbase/rosetta-validator).
 
 ## Development
 * `make deps` to install dependencies
 * `make gen` to generate models and helpers
 * `make test` to run tests
-* `make lint` to lint the source code (included generated code)
+* `make lint` to lint the source code (including generated code)
 * `make release` to check if code passes all tests run by CircleCI
 
 ## License

asserter/README.md

@@ -0,0 +1,17 @@
+# Asserter
+
+[![GoDoc](https://img.shields.io/badge/go.dev-reference-007d9c?logo=go&logoColor=white&style=shield)](https://pkg.go.dev/github.com/coinbase/rosetta-sdk-go/asserter?tab=overview)
+
+The Asserter package is used to validate the correctness of Rosetta models. It is
+important to note that this validation only ensures that required fields are
+populated, fields are in the correct format, and transaction operations only
+contain types and statuses specified in the /network/status endpoint.
+
+If you want more intensive validation, try running the
+[Rosetta Validator](https://github.com/coinbase/rosetta-validator).
+
+## Installation
+
+```shell
+go get github.com/coinbase/rosetta-sdk-go/asserter
+```

asserter/account.go

@@ -18,17 +18,17 @@ import (
 	"fmt"
 	"reflect"
 
-	rosetta "github.com/coinbase/rosetta-sdk-go/gen"
+	"github.com/coinbase/rosetta-sdk-go/models"
 )
 
 // containsAccountIdentifier returns a boolean indicating if a
-// *rosetta.AccountIdentifier is contained within a slice of
-// *rosetta.AccountIdentifier. The check for equality takes
-// into account everything within the rosetta.AccountIdentifier
+// *models.AccountIdentifier is contained within a slice of
+// *models.AccountIdentifier. The check for equality takes
+// into account everything within the models.AccountIdentifier
 // struct (including the SubAccountIdentifier).
 func containsAccountIdentifier(
-	identifiers []*rosetta.AccountIdentifier,
-	identifier *rosetta.AccountIdentifier,
+	identifiers []*models.AccountIdentifier,
+	identifier *models.AccountIdentifier,
 ) bool {
 	for _, ident := range identifiers {
 		if reflect.DeepEqual(ident, identifier) {
@@ -40,11 +40,11 @@ func containsAccountIdentifier(
 }
 
 // containsCurrency returns a boolean indicating if a
-// *rosetta.Currency is contained within a slice of
-// *rosetta.Currency. The check for equality takes
-// into account everything within the rosetta.Currency
+// *models.Currency is contained within a slice of
+// *models.Currency. The check for equality takes
+// into account everything within the models.Currency
 // struct (including currency.Metadata).
-func containsCurrency(currencies []*rosetta.Currency, currency *rosetta.Currency) bool {
+func containsCurrency(currencies []*models.Currency, currency *models.Currency) bool {
 	for _, curr := range currencies {
 		if reflect.DeepEqual(curr, currency) {
 			return true
@@ -55,12 +55,12 @@ func containsCurrency(currencies []*rosetta.Currency, currency *rosetta.Currency
 }
 
 // assertBalanceAmounts returns an error if a slice
-// of rosetta.Amount returned as an rosetta.AccountIdentifier's
+// of models.Amount returned as an models.AccountIdentifier's
 // balance is invalid. It is considered invalid if the same
 // currency is returned multiple times (these shoould be
-// consolidated) or if a rosetta.Amount is considered invalid.
-func assertBalanceAmounts(amounts []*rosetta.Amount) error {
-	currencies := make([]*rosetta.Currency, 0)
+// consolidated) or if a models.Amount is considered invalid.
+func assertBalanceAmounts(amounts []*models.Amount) error {
+	currencies := make([]*models.Currency, 0)
 	for _, amount := range amounts {
 		// Ensure a currency is used at most once in balance.Amounts
 		if containsCurrency(currencies, amount.Currency) {
@@ -77,19 +77,19 @@ func assertBalanceAmounts(amounts []*rosetta.Amount) error {
 }
 
 // AccountBalance returns an error if the provided
-// rosetta.BlockIdentifier is invalid, if the same
-// rosetta.AccountIdentifier appears in multiple
-// rosetta.Balance structs (should be consolidated),
-// or if a rosetta.Balance is considered invalid.
+// models.BlockIdentifier is invalid, if the same
+// models.AccountIdentifier appears in multiple
+// models.Balance structs (should be consolidated),
+// or if a models.Balance is considered invalid.
 func AccountBalance(
-	block *rosetta.BlockIdentifier,
-	balances []*rosetta.Balance,
+	block *models.BlockIdentifier,
+	balances []*models.Balance,
 ) error {
 	if err := BlockIdentifier(block); err != nil {
 		return err
 	}
 
-	accounts := make([]*rosetta.AccountIdentifier, 0)
+	accounts := make([]*models.AccountIdentifier, 0)
 	for _, balance := range balances {
 		if err := AccountIdentifier(balance.AccountIdentifier); err != nil {
 			return err