05e491f65b
It seems unachievable for nodes to keep their clocks accurate to within 500ms. It is unclear whether this is due to Windows' implementation of client NTP or because of terrible network conditions in China. So increasing max NTP offset to allow block generation from 500ms to 30s. Correspondingly increasing max peer timestamp delta from 5s to 30s. The block consensus algorithm will need to change in the near future to address clock issues.
Qora2
To use:
- Use maven to fetch dependencies.
- Build project.
- Build v1feeder.jar as a fatjar using src/v1feeder.java as the main class
- Fire up an old-gen Qora node.
- Use
v1feeder.jarto migrate old Qora blocks to DB:
java -jar v1feeder.jar qora-v1-node-ip
You should now be able to run all the JUnit tests.
You can also examine the migrated database using HSQLDB's "sqltool".
It's a good idea to install "rlwrap" (ReadLine wrapper) too as sqltool doesn't support command history/editing!
Typical command line for sqltool would be:
rlwrap java -cp ${HSQLDB_JAR}:${SQLTOOL_JAR} org.hsqldb.cmdline.SqlTool --rcFile=${SQLTOOL_RC} qora
${HSQLDB_JAR} contains pathname to where Maven downloaded hsqldb,
typically ${HOME}/.m2/repository/org/hsqldb/hsqldb/2.4.0/hsqldb-2.4.0.jar,
but for now lib/org/hsqldb/hsqldb/r5836/hsqldb-r5836.jar
${SQLTOOL_JAR} contains pathname to where Maven downloaded sqltool,
typically ${HOME}/.m2/repository/org/hsqldb/sqltool/2.4.1/sqltool-2.4.1.jar
${SQLTOOL_RC} contains pathname to a text file describing Qora2 database,
e.g. ${HOME}/.sqltool.rc, with contents like:
urlid qora
url jdbc:hsqldb:file:db/qora
username SA
password
urlid qora-test
url jdbc:hsqldb:file:db/test
username SA
password
You could change the line url jdbc:hsqldb:file:db/test to use a full pathname for easier use.
Another idea is to assign a shell alias in your .bashrc like:
export HSQLDB_JAR=${HOME}/.m2/repository/org/hsqldb/hsqldb/2.4.0/hsqldb-2.4.0.jar
export SQLTOOL_JAR=${HOME}/.m2/repository/org/hsqldb/sqltool/2.4.1/sqltool-2.4.1.jar
alias sqltool='rlwrap java -cp ${HSQLDB_JAR}:${SQLTOOL_JAR} org.hsqldb.cmdline.SqlTool --rcFile=${SQLTOOL_RC}'
So you can simply type: sqltool qora-test
Don't forget to use SHUTDOWN; before exiting sqltool so that database files are closed cleanly.