Started gms client lib

<?xml version="1.0" encoding="UTF-8"?>

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">

    <modelVersion>4.0.0</modelVersion>

    <groupId>it.inaf.ia2</groupId>

    <artifactId>gms-client-lib</artifactId>

    <version>1.0-SNAPSHOT</version>

    <packaging>jar</packaging>

    <properties>

        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

        <maven.compiler.source>1.8</maven.compiler.source>

        <maven.compiler.target>1.8</maven.compiler.target>

        <spring.version>5.1.8.RELEASE</spring.version>

    </properties>

    <dependencies>

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-web</artifactId>

            <version>${spring.version}</version>

        </dependency>

    </dependencies>

</project>

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package it.inaf.ia2.gms.client;

import it.inaf.ia2.gms.client.model.Group;

import it.inaf.ia2.gms.client.model.Member;

import it.inaf.ia2.gms.client.model.Permission;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

import org.springframework.http.HttpEntity;

import org.springframework.http.HttpMethod;

import org.springframework.web.client.RestTemplate;

import org.springframework.web.util.UriComponentsBuilder;

public class GmsClient {

    private static final String WS = "ws";

    private final String baseUrl;

    private final RestTemplate restTemplate;

    public GmsClient(String baseUrl, String clientId, String clientSecret) {

        this.baseUrl = baseUrl;

        restTemplate = new RestTemplate();

    }

    public Group createGroup(List<String> names) {

        String url = UriComponentsBuilder.fromHttpUrl(baseUrl)

                .pathSegment(WS, "group")

                .toUriString();

        HttpEntity<List<String>> httpEntity = new HttpEntity<>(names);

        return restTemplate.exchange(url, HttpMethod.POST, httpEntity, Group.class).getBody();

    }

    public void deleteGroupByPath(List<String> names) {

        String url = UriComponentsBuilder.fromHttpUrl(baseUrl)

                .pathSegment(WS, "group")

                .queryParam("names", names)

                .toUriString();

        restTemplate.delete(url);

    }

    public Member addMember(List<String> names, String userId) {

        String url = UriComponentsBuilder.fromHttpUrl(baseUrl)

                .pathSegment(WS, "member")

                .toUriString();

        Map<String, Object> params = new HashMap<>();

        params.put("names", names);

        params.put("userId", userId);

        HttpEntity<Map<String, Object>> httpEntity = new HttpEntity<>(params);

        return restTemplate.exchange(url, HttpMethod.POST, httpEntity, Member.class).getBody();

    }

    public void removeMember(List<String> names, String userId) {

        String url = UriComponentsBuilder.fromHttpUrl(baseUrl)

                .pathSegment(WS, "member")

                .queryParam("names", names)

                .queryParam("userId", userId)

                .toUriString();

        restTemplate.delete(url);

    }

    public Permission addPermission(List<String> names, String userId, String permission) {

        String url = UriComponentsBuilder.fromHttpUrl(baseUrl)

                .pathSegment(WS, "permission")

                .toUriString();

        Map<String, Object> params = new HashMap<>();

        params.put("names", names);

        params.put("userId", userId);

        params.put("permission", permission);

        HttpEntity<Map<String, Object>> httpEntity = new HttpEntity<>(params);

        return restTemplate.exchange(url, HttpMethod.POST, httpEntity, Permission.class).getBody();

    }

    public void deletePermission(List<String> names, String userId, String permission) {

        String url = UriComponentsBuilder.fromHttpUrl(baseUrl)

                .pathSegment(WS, "permission")

                .queryParam("names", names)

                .queryParam("userId", userId)

                .queryParam("permission", permission)

                .toUriString();

        restTemplate.delete(url);

    }

    public void prepareToJoin(String fromUserId, String toUserId) {

        String url = UriComponentsBuilder.fromHttpUrl(baseUrl)

                .pathSegment(WS, "prepare-join")

                .toUriString();

        Map<String, Object> params = new HashMap<>();

        params.put("fromUserId", fromUserId);

        params.put("toUserId", toUserId);

        HttpEntity<Map<String, Object>> httpEntity = new HttpEntity<>(params);

        restTemplate.exchange(url, HttpMethod.POST, httpEntity, Void.class);

    }

}

package it.inaf.ia2.gms.client.model;

public class Group {

    private String id;

    private String name;

    private String path;

    private String parentPath;

    public String getId() {

        return id;

    }

    public void setId(String id) {

        this.id = id;

    }

    public String getName() {

        return name;

    }

    public void setName(String name) {

        this.name = name;

    }

    public String getPath() {

        return path;

    }

    public void setPath(String path) {

        this.path = path;

    }

    public String getParentPath() {

        return parentPath;

    }

    public void setParentPath(String parentPath) {

        this.parentPath = parentPath;

    }

}

package it.inaf.ia2.gms.client.model;

public class Member {

    private String groupId;

    private String userId;

    public String getGroupId() {

        return groupId;

    }

    public void setGroupId(String groupId) {

        this.groupId = groupId;

    }

    public String getUserId() {

        return userId;

    }

    public void setUserId(String userId) {

        this.userId = userId;

    }

}

package it.inaf.ia2.gms.client.model;

public class Permission {

    private String groupId;

    private String userId;

    private String permission;

    public String getGroupId() {

        return groupId;

    }

    public void setGroupId(String groupId) {

        this.groupId = groupId;

    }

    public String getUserId() {

        return userId;

    }

    public void setUserId(String userId) {

        this.userId = userId;

    }

    public String getPermission() {

        return permission;

    }

    public void setPermission(String permission) {

        this.permission = permission;

    }

}