- In order to use
wgetyou will need
brew install wget(used in build.sh)
- Chainquery is built for Linux by default in build.sh, so you will need to modify the cross compilation for an OSX build.
- Be sure to give execute privileges to the scripts you plan to use.
Make sure you have Go 1.10+ (required for go-releaser)
- Ubuntu: https://launchpad.net/~longsleep/+archive/ubuntu/golang-backports or https://github.com/golang/go/wiki/Ubuntu [Easier but maybe older] (recommended)
- Linux: GoLang official install guide [Harder but up to date]
- OSX: GoLang official install guide
- Windows: GoLang official install guide
- Install and run mysql.(OSX:
brew install mysql)
- Create user
lbryand grant it all permissions on
Install lbrycrdd (https://github.com/lbryio/lbrycrd/releases)
~/.lbrycrd/lbrycrd.conffile exists with username and password. If you don't have one, run:
mkdir -p ~/.lbrycrd echo -e "rpcuser=lbryrpc\nrpcpassword=$(env LC_CTYPE=C LC_ALL=C tr -dc A-Za-z0-9 < /dev/urandom | head -c 16 | xargs)" >> ~/.lbrycrd/lbrycrd.conf
./lbrycrdd -server -daemon -txindex -conf=$HOME/.lbrycrd/lbrycrd.conf. If you get an error about indexing, add the
-reindexflag for one run. You will only need to reindex once.
Chainquery can be configured via toml file.
Running from Source
go get -u github.com/lbryio/chainquery cd "$(go env GOPATH)/src/github.com/lbryio/chainquery" ./dev.sh
Running from Release
This will likely eventually be the main supported method of running Chainquery in your environment but this sections documentation is a WIP so YMMV
Get a download link for your operating system specific release from the releases page then use the following command with your download link.
wget -O ~/chainquery.zip https://example.com/path/to/your/release.zip Example: wget -O ~/chainquery.zip https://github.com/lbryio/chainquery/releases/download/v1.1.2/chainquery_1.1.2_Linux_x86_64.zip
Unzip the package you just downloaded with the following.
cd ~/ unzip ~/chainquery.zip
Your console should show you something similar to the following.
root@8fe4046b6d46:~# unzip chainquery.zip Archive: chainquery.zip inflating: LICENSE inflating: README.md inflating: chainquery
Of course you don't have to extract all of this stuff to your machines home directory
~/ you must use whatever paths you prefer. One that could be beneficial is adding these executables into your systems
$PATH this is out of the scope of this README.
The main Chainquery binary should be marked as Executable by default but if not you can run the following.
chmod +x ~/chainquery
Finally running chainquery should be as simple as.
You can obtain information on the flags in Chainqueries main binary by running the following.
The model of Chainquery at its foundation consist of the fundamental data types found in the block chain. This information is then expounded on with additional columns and tables that make querying the data much easier.
What does Chainquery consist of?
Chainquery consists of 4 main parts. The API Server, the Daemon, the Job Scheduler, and the upgrade manager.
The API Server services either structured queries via defined APIs or raw SQL against the Chainquery MySQL database. The APIs are documented via Chainquery APIs, a work in progress :) .
The Daemon is responsible for updating the Chainquery database to keep it in sync with lbrycrd data. The daemon runs periodically to check if there are newly
created blocks that need to be processed. The Daemon simply processes the block and its
transactions. It also handles blockchain reorganizations. It will remove the orphaned block data and processing the new blocks from that height it diverged.
The entry points are daemon iterations(
func daemonIteration()) block processing(
func RunBlockProcessing(height *uint64)),
func ProcessTx(jsonTx *lbrycrd.TxRawResult, blockTime uint64)).
The job scheduler schedules different types of jobs to update the Chainquery database example.
These jobs synchronize different areas of the data either to make queries faster or ascertain information that is not
directly part of the raw blockchain. The example provided is leveraged to handle the status of a claim which is actually
stored in the ClaimTrie of LBRYcrd. So it runs periodically to make sure Chainquery has the most up to date status of
claims in the trie. The table
job_status stores the current state of a particular job, like when it last synced.
The upgrade manager handles data upgrades between versions. The table
application_status stores information about the
state of the application as it relates to the data, api and app versions. This is all leveraged by the upgrade manager so it
knows what scripts might need to be run to keep the data in sync across deployments. The scripts
are foundation of the upgrade manager.
Contributions to this project are welcome, encouraged, and compensated. For more details, see lbry.io/faq/contributing
master branch is regularly built and tested, but is not guaranteed to be
completely stable. Releases are created
regularly to indicate new official, stable release versions.
Developers are strongly encouraged to write unit tests for new code, and to
submit new unit tests for old code. Unit tests can be compiled and run
go test ./... from the source directory which should be
Updating the generated models
We use sqlboiler to generate our data models based on the db schema. If you make schema changes, run
regenerate the models.
A note of caution: the models are generated by connecting to the MySQL server and inspecting the current schema. If you made any db schema changes by hand, then the schema may be out of sync with the migrations. Here's the safe way to ensure that the models match the migrations:
- Put all the schema changes you want to make into a migration.
- In mysql, drop and recreate the db you're using, so that it's empty.
./dev.sh. This will run all the migrations on the empty db.
./gen_models.shto update the models.
This process ensures that the generated models will match the updated schema exactly, so there are no surprises when the migrations are applied to the live db.
This project is MIT licensed. For the full license, see LICENSE.