hedisdb/hedis

Hedis can retrieve data from **ANY** database directly via Redis

hedis's Issues

Fix signal handler

The function "exit" does not belong to the list of async-signal-safe functions.
I guess that a different program design will be needed for your function "sigShutdownHandler".

Improve all warning when compile

like malloc deprecated messages.

Segmentation Fault in parse_yaml_entry function

To test the compile result, I try reduce the hedis.yml as follow.

mysqltest:
type: mysql
username: root
password: MY_PASSWORD
host: localhost
database: hedistest
env:
LD_LIBRARY_PATH: $LD_LIBRARY_PATH:/usr/lib/x86_64-linux-gnu

I add some debug messages and show as follow.

root@8baeaa89a5cf:/home/amean/hedis/src# ./redis-server --hedis ../hedis.yml
Close config file, and ready to add connector
Finish zmalloc sizeof(hedisConnector), line_count = 9
Switch type 0, at i = 0
Switch type 1, at i = 1
Switch type 2, at i = 5
case 2 first step, finish zmalloc, entry_count=4
finish case 2, j= 4
Segmentation fault (core dumped)

If I use original hedis.yml file to test, there is no such problem. So I think there are some bugs in parse_yaml_entry function that cause segmention fault at initial stage of the program execute.

Environment variables support to configuration file

Like below

cdh1:
  type: hbase
  zookeeper: localhost:2181
  env: # Environment variables
    CLASSPATH: $CLASSPATH:/home/kewang/git/libhbase/target/libhbase-1.0-SNAPSHOT/lib/async-1.4.0.jar:/home/kewang/git/libhbase/target/libhbase-1.0-SNAPSHOT/lib/asynchbase-1.5.0-libhbase-20140311.193218-1.jar
    HBASE_LIB_DIR: /home/kewang/hbase/lib
mysqltest:
  type: mysql
  username: root
  password: MY_PASSWORD
  host: localhost
  database: hedistest
otherdb:
  type: gooddb

Move parse GET command to connector

related hedisdb/hedis-connector-template#1

Can't load the same library more times

If I load same type twice or more, always become latest variables. Like cdh1 and cdh2:

cdh1:
  type: hbase
  zookeeper: localhost:2181
  extra: aaa
cdh2:
  type: hbase
  zookeeper: localhost:2181
  extra: bbb
cdh3:
  type: template

Add git support

When write hedis configuration file, just use git-like protocol and will auto build connectors

cdh1:
  type: hbase # https://github.com/hedisdb/hedis-connector-hbase
  zookeeper: localhost:2181
mysqltest:
  type: kewangtw/hedis-connector-mysql # https://github.com/kewangtw/hedis-connector-mysql
  username: root
  password: MY_PASSWORD
  host: localhost
  database: hedistest
otherdb:
  type: https://bitbucket.org/good/gooddb # https://bitbucket.org/good/gooddb

Add invalidation mechanism

If GET command already retrieves data from connector, it must provide to invalidate data and get newer it.

Completion of error handling

Would you like to add more error handling for return values from functions like the following?

• fclose ⇒ parse_hedis_config
• malloc ⇒ build_connector

Output format support

Add JSON, XML format, ...etc.

Support multiple Redis version

Hedis is based on Redis unstable branch. I think that should support old Redis version.

Add enviroment variables when use env section

Add SET command

If I use SET "cdh1://User@kewang" "{\"cf:token\": \"001token001\"}", it would put JSON value to DB.

Pay attention to various DB data format

Remove YAML dependency

It should develop myself YAML parser version

Add docker

Let users easy to use hedis

Add benchmark

Compare Redis & Hedis benchmark

Fix memory leak

When I ran benchmark over 10000 current connections, it maybe has memory leak situation.

SCAN command support