Table of Contents

Creating a development environment

This text is intended as a tutorial for CzechIdM developers with the goal to set up IDE, build CzechIdM in it and run the system. If you prefer quick glance at the code or need to start quickly, you can use Quick start with devstack.

1. Install Java and Maven

First install JDK and Maven:

Download Java 1.8 Oracle JDK (or OpenJDK), minor version at least 101 (it's necessary due to the certificate of Nexus repository, which uses Let's encrypt and its support was added in version 101). The guide was tested for jdk1.8.0_131.

Install Maven from your system packages, at least version 3.1 is required.

yum install maven
mvn -v

Note: If you installed Java separately from your system libraries, you should set the correct Java home for Maven in the file ".mavenrc", which you will create in your home directory. You put there the full path to your JDK:

export JAVA_HOME=/path/to/installed/jdk/

This way Maven will always use this JDK.

2. Download the source code

Download CzechIdM source code from GitHub:

git clone https://github.com/bcvsolutions/CzechIdMng.git

Check branch:

git branch

The development is always done on the branch "develop", so don't forget to switch to this branch:

git checkout -b develop origin/develop

To develop your own feature or fix a bug create new branch from develop

git checkout -b personal/YourName/feature_or_bugfix-name_of_your_branch

Create pull request to merge your branch to develop branch.

3. Install PostgreSQL

CzechIdM in "dev" profile uses PostgreSQL as the repository. You have to install it at least in basic configuration:

Install necessary packages:

yum install postgresql postgresql-server postgresql-init

Fedora 25 packages:

dnf install postgresql-server postgresql-contrib

First run of the service:

systemctl start postgresql.service

If the following error occurs: "Job for postgresql.service failed. See 'systemctl status postgresql.service' and 'journalctl -xn' for details." Try initializing the PostgreSQL first and start the database again:

postgresql-setup --initdb --unit postgresql

Set automatic start of the service when starting OS:

systemctl enable postgresql.service

Set the configuration file for the database to accept login and password (change METHOD from ident to md5)

vim /var/lib/pgsql/data/pg_hba.conf

# TYPE  DATABASE        USER            ADDRESS                 METHOD

# "local" is for Unix domain socket connections only
local        all                   all                                                peer
# IPv4 local connections:
host         all                  all                127.0.0.1/32             md5
# IPv6 local connections:
host         all                  all                ::1/128                     md5

Restart the service to load the changes:

systemctl restart postgresql.service

Create the database with name:

su postgres -c psql postgres
CREATE USER idmadmin PASSWORD 'idmadmin';
CREATE DATABASE "bcv_idm_10" WITH OWNER idmadmin ENCODING 'UTF8' LC_COLLATE = 'en_US.UTF-8' LC_CTYPE = 'en_US.UTF-8' template template0;

4. Backend development environment

The tutorial is different for each IDE. Select one and continue with a certain tutorial below:

In the IDE start the Tomcat server with CzechIdM deployed.

In browser access http://localhost:8080/idm-backend/api/v1/status to check whether the backend is running. Following text should be displayed:

CzechIdM API is running
If you can see this message, API is running

5. Frontend development environment

BEWARE!!! Please use these instructions

Select IDE for frontend environment

You can use any text editor or JavaScript IDE. We recommend to use ATOM

6. Run backend and frontend together

Assume running backend from the previous steps.

In the project root folder:

Start frontend

cd CzechIdM/Realization/frontend/czechidm-app
gulp

A new browser window or tab will open with https://localhost:3000 automatically (this could take some time).

The frontend is fully started after you see in following line in log:

[BS] 1 file changed (app.js)

After the application is running, log in:

If the app shows error with permission, log out
To use CzechIdM in more windows or tabs for development purposes go to http://localhost:3001/ to BrowserSync administration and then go to SyncOptions and disable everything except CodeSync

Congratulations! Your CzechIdM development environment is ready to use.

Common development errors & tips

Tomcat server fails to start

If Tomcat server fails to start, try following:

systemctl status postgresql.service
spring.datasource.url=jdbc:postgresql://localhost:5432/bcv_idm_storage
spring.datasource.username=idmadmin
spring.datasource.password=idmadmin

use the following command and type the password when asked for it.

psql -h 127.0.0.1 -U idmadmin bcv_idm_storage

Common error messages

Initialization of bean failed; nested exception is org.flywaydb.core.api.FlywayException: Validate failed: Migration checksum mismatch for migration 7.07.004 means that your database was already used for some other version of CzechIdM (you can check used Flyway versions in the tables idm_schema_version_xxx). This can happen if you switch to some older development branch. The easiest solution for the developer (you will lose all your prepared data in IdM!) is to drop the database (DROP DATABASE bcv_idm_storage) and create it again (see the part CREATE DATABASE of Install PostgreSQL). Or you can create a different database and set its name to the application-dev.properties temporarily.

Initialization of bean failed; nested exception is org.flywaydb.core.api.FlywayException: Found more than one migration with version 7.07.004 means literally that there is a duplicity in Flyway scripts versions. This has to be fixed by the authors of the scripts by renaming one of the script that use the same version. The log will tell you where to find the duplicity:

Offenders:
-> ... idm-core-impl-7.7.0-SNAPSHOT.jar!/eu/bcvsolutions/idm/core/sql/postgresql/V7_07_004__automatic-role.sql (SQL)
-> ... idm-core-impl-7.7.0-SNAPSHOT.jar!/eu/bcvsolutions/idm/core/sql/postgresql/V7_07_004__add-index-template-name.sql (SQL)

Just increase the version in the name of one of the scripts, clean & build the project again.

Could not create Vfs.Dir from url

This isn't error just warning. You may don't interest about this warning. Warning is only when you start local development environment and you configuration for ic connectors path isn't correctly setup. Dont worry about this warning.

2019-07-18 10:01:20.436  WARN 31049 --- [ost-startStop-1] org.reflections.Reflections              : could not create Vfs.Dir from url. ignoring the exception and continuing

org.reflections.ReflectionsException: could not create Vfs.Dir from url, no matching UrlType was found [file:/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/ext/libatk-wrapper.so]
either use fromURL(final URL url, final List<UrlType> urlTypes) or use the static setDefaultURLTypes(final List<UrlType> urlTypes) or addDefaultURLTypes(UrlType urlType) with your specialized UrlType.

Frontend build fails

Out of memory

If your gulp build fails with the following error:

[INFO] [18:43:00] Starting 'browserify'...
[INFO] [18:45:30] Finished 'browserify' after 2.5 min
[INFO] [18:45:30] Finished 'build' after 3.12 min
[INFO]
[INFO] <--- Last few GCs --->
[INFO]
[INFO] 192087 ms: Scavenge 1282.6 (1434.8) -> 1282.1 (1434.8) MB, 3.8 / 0 ms (+ 3.8 ms in 9 steps since last GC) [allocation failure].
[INFO] 192095 ms: Scavenge 1282.6 (1434.8) -> 1282.2 (1434.8) MB, 3.6 / 0 ms (+ 3.3 ms in 8 steps since last GC) [allocation failure].
[INFO] 192102 ms: Scavenge 1282.6 (1434.8) -> 1282.1 (1434.8) MB, 3.7 / 0 ms (+ 2.9 ms in 7 steps since last GC) [allocation failure].
[INFO]
[INFO]
[INFO] <--- JS stacktrace --->
[INFO] Cannot get stack trace in GC.
[ERROR] FATAL ERROR: Scavenger: semi-space copy
[ERROR] Allocation failed - process out of memory
[ERROR] 1: node::Abort() [gulp]

Try following:

						<execution>
								<id>install node and npm</id>
								<goals>
									<goal>install-node-and-npm</goal>
								</goals>
								<phase>generate-resources</phase>
								<configuration>
									<nodeVersion>v10.15.3</nodeVersion>
									<npmVersion>6.4.1</npmVersion>
								</configuration>
						</execution>
                                                         <execution>
                                                                <id>gulp build</id>
                                                                <goals>
                                                                        <goal>gulp</goal>
                                                                </goals>
                                                                <phase>generate-resources</phase>
                                                                <configuration>
                                                                        <arguments>build -p ${frontend.profile} -s ${frontend.stage} --max_old_space_size=4096</arguments>
                                                                        <workingDirectory>../../frontend/czechidm-app</workingDirectory>
                                                                        <installDirectory>target</installDirectory>
                                                                </configuration>
                                                        </execution>

Wrong layout and NPM version

If your frontend looks like this: https://redmine.czechidm.com/issues/1752, check following:

npm -v
6.4.1