+ *FSDB.HasKey now uses common.FileExists to test for file existence
+ IsKeyInDomain takes key as a []byte slice instead of as a string
to avoid extraneous []byte<-->string conversions for start and end
+ Iterator.Close() instead of Iterator.Release()
+ withDB helper to encapsulate DB creation, deferred cleanups
so that for loops can use opened DBs and discard them ASAP
Addressing accepted changes from review with @jaekwon
Fixes https://github.com/tendermint/tmlibs/issues/99
Updates https://github.com/tendermint/tendermint/issues/973
Removed usages of math/rand.DefaultSource in favour of our
own source that's seeded with a completely random source
and is safe for use in concurrent in multiple goroutines.
Also extend some functionality that the stdlib exposes such as
* RandPerm
* RandIntn
* RandInt31
* RandInt63
Also added an integration test whose purpose is to be run as
a consistency check to ensure that our results never repeat
hence that our internal PRNG is uniquely seeded each time.
This integration test can be triggered by setting environment variable:
`TENDERMINT_INTEGRATION_TESTS=true`
for example
```shell
TENDERMINT_INTEGRATION_TESTS=true go test
```
* Build tags need to come before the package name
and have at least a blank line, between them and
the package, please see
https://golang.org/pkg/go/build/#hdr-Build_Constraints
* fmt.Println doesn't take formatting verbs
* Fix a missing formatting argument to fmt.Printf
Can now run batch which can be tested by:
```shell
echo -e "echo foo\necho blue" | abci-cli batch
```
giving
```shell
I[12-12|07:55:55.513] Starting socketClient
module=abci-client impl=socketClient
-> code: OK
-> data: foo
-> data.hex: 0x666F6F
-> code: OK
-> data: blue
-> data.hex: 0x626C7565
```
Use the single client connection at startup time
for sending over commands instead of shelling out
for every command.
This code fixes the regression from
https://github.com/tendermint/abci/pull/117
which instead used "os/exec".Command with:
"abci-cli <the_command> [args...]"
The purpose of this code is to restore us
back to the state after cobra replace urlfave/cli.
There is still a bit of work to implement Batch
itself, but that should be simpler as a focused
command.
Fixes#133
