g597.kirilenko.task4

homework-g597-kirilenko/pom.xml

@@ -9,6 +9,10 @@
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
+    <properties>
+        <spring.boot.version>1.4.2.RELEASE</spring.boot.version>
+    </properties>
+
     <artifactId>homework-g597-kirilenko</artifactId>
 
      <dependencies>
@@ -24,6 +28,33 @@
             <version>1.0.0</version>
             <scope>test</scope>
         </dependency>
+
+         <dependency>
+             <groupId>org.springframework.boot</groupId>
+             <artifactId>spring-boot-starter-web</artifactId>
+             <version>${spring.boot.version}</version>
+         </dependency>
+         <dependency>
+             <groupId>org.springframework.boot</groupId>
+             <artifactId>spring-boot-starter-jdbc</artifactId>
+             <version>${spring.boot.version}</version>
+         </dependency>
+         <dependency>
+             <groupId>org.springframework.boot</groupId>
+             <artifactId>spring-boot-starter-security</artifactId>
+             <version>${spring.boot.version}</version>
+         </dependency>
+         <dependency>
+             <groupId>com.zaxxer</groupId>
+             <artifactId>HikariCP</artifactId>
+             <version>2.5.1</version>
+         </dependency>
+         <dependency>
+             <groupId>com.h2database</groupId>
+             <artifactId>h2</artifactId>
+             <version>1.4.193</version>
+         </dependency>
+
          <dependency>
              <groupId>com.google.guava</groupId>
              <artifactId>guava</artifactId>

homework-g597-kirilenko/src/main/java/ru/mipt/java2016/homework/g597/kirilenko/task1/MyCalculator.java

@@ -221,4 +221,4 @@ private boolean checkIncorrectExpression(String expres) {
         return true;
 
     }
-}
+}

homework-g597-kirilenko/src/main/java/ru/mipt/java2016/homework/g597/kirilenko/task4/BillingDao.java

@@ -0,0 +1,57 @@
+package ru.mipt.java2016.homework.g597.kirilenko.task4;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.dao.EmptyResultDataAccessException;
+import org.springframework.jdbc.core.JdbcTemplate;
+import org.springframework.jdbc.core.RowMapper;
+import org.springframework.stereotype.Repository;
+
+import javax.annotation.PostConstruct;
+import javax.sql.DataSource;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+
+@Repository
+public class BillingDao {
+    private static final Logger LOG = LoggerFactory.getLogger(BillingDao.class);
+
+    @Autowired
+    private DataSource dataSource;
+
+    private JdbcTemplate jdbcTemplate;
+
+    @PostConstruct
+    public void postConstruct() {
+        jdbcTemplate = new JdbcTemplate(dataSource, false);
+        initSchema();
+    }
+
+    public void initSchema() {
+        LOG.trace("Initializing schema");
+        jdbcTemplate.execute("CREATE SCHEMA IF NOT EXISTS billing");
+        jdbcTemplate.execute("CREATE TABLE IF NOT EXISTS billing.users " +
+                "(username VARCHAR PRIMARY KEY, password VARCHAR, enabled BOOLEAN)");
+        jdbcTemplate.update("INSERT INTO billing.users VALUES ('username', 'password', TRUE)");
+    }
+
+
+    public BillingUser loadUser(String username) throws EmptyResultDataAccessException {
+        LOG.trace("Querying for user " + username);
+        return jdbcTemplate.queryForObject(
+                "SELECT username, password, enabled FROM billing.users WHERE username = ?",
+                new Object[]{username},
+                new RowMapper<BillingUser>() {
+                    @Override
+                    public BillingUser mapRow(ResultSet rs, int rowNum) throws SQLException {
+                        return new BillingUser(
+                                rs.getString("username"),
+                                rs.getString("password"),
+                                rs.getBoolean("enabled")
+                        );
+                    }
+                }
+        );
+    }
+}

homework-g597-kirilenko/src/main/java/ru/mipt/java2016/homework/g597/kirilenko/task4/BillingDatabaseConfiguration.java

@@ -0,0 +1,26 @@
+package ru.mipt.java2016.homework.g597.kirilenko.task4;
+
+import com.zaxxer.hikari.HikariConfig;
+import com.zaxxer.hikari.HikariDataSource;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+import javax.sql.DataSource;
+
+@Configuration
+public class BillingDatabaseConfiguration {
+    @Bean
+    public DataSource billingDataSource(
+            @Value("${ru.mipt.java2016.homework.g597.kirilenko.task4.username:}") String username,
+            @Value("${ru.mipt.java2016.homework.g597.kirilenko.task4.password:}") String password
+    ) {
+        HikariConfig config = new HikariConfig();
+        config.setDriverClassName(org.h2.Driver.class.getName());
+        String jdbcUrl = "jdbc:h2:~/task4.db";
+        config.setJdbcUrl(jdbcUrl);
+        config.setUsername(username);
+        config.setPassword(password);
+        return new HikariDataSource(config);
+    }
+}

homework-g597-kirilenko/src/main/java/ru/mipt/java2016/homework/g597/kirilenko/task4/BillingUser.java

@@ -0,0 +1,68 @@
+package ru.mipt.java2016.homework.g597.kirilenko.task4;
+
+public class BillingUser {
+    private final String username;
+    private final String password;
+    private final boolean enabled;
+
+    public BillingUser(String username, String password, boolean enabled) {
+        if (username == null) {
+            throw new IllegalArgumentException("Null username is not allowed");
+        }
+        if (password == null) {
+            throw new IllegalArgumentException("Null password is not allowed");
+        }
+        this.username = username;
+        this.password = password;
+        this.enabled = enabled;
+    }
+
+    public String getUsername() {
+        return username;
+    }
+
+    public String getPassword() {
+        return password;
+    }
+
+    public boolean isEnabled() {
+        return enabled;
+    }
+
+    @Override
+    public String toString() {
+        return "BillingUser{" +
+                "username='" + username + '\'' +
+                ", password='" + password + '\'' +
+                ", enabled=" + enabled +
+                '}';
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+
+        BillingUser that = (BillingUser) o;
+
+        if (enabled != that.enabled) {
+            return false;
+        }
+        if (!username.equals(that.username)) {
+            return false;
+        }
+        return password.equals(that.password);
+    }
+
+    @Override
+    public int hashCode() {
+        int result = username.hashCode();
+        result = 31 * result + password.hashCode();
+        result = 31 * result + (enabled ? 1 : 0);
+        return result;
+    }
+}

homework-g597-kirilenko/src/main/java/ru/mipt/java2016/homework/g597/kirilenko/task4/CalculatorController.java

@@ -0,0 +1,83 @@
+package ru.mipt.java2016.homework.g597.kirilenko.task4;
+
+import javafx.util.Pair;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.*;
+import ru.mipt.java2016.homework.base.task1.ParsingException;
+
+import java.util.ArrayList;
+
+@RestController
+public class CalculatorController {
+    private static final Logger LOG = LoggerFactory.getLogger(CalculatorController.class);
+    @Autowired
+    private MyCalculator calculator;
+
+
+    @RequestMapping(path = "/variable/{variableName}", method = RequestMethod.GET)
+    public String getVariable(@PathVariable String variableName) {
+        String result = calculator.getVariableExpression(variableName);
+        return result;
+    }
+
+    @RequestMapping(path = "/function/{functionName}", method = RequestMethod.GET)
+    public String getFunction(@PathVariable String functionName) {
+        Pair<ArrayList<String>, String> info = calculator.getFunctionInfo(functionName);
+        String result = info.getValue() + "&";
+        for (int i = 0; i < info.getKey().size(); i++) {
+            result += info.getKey().get(i);
+            if (i != info.getKey().size() - 1) {
+                result += ",";
+            }
+        }
+        return result + "\n";
+    }
+
+    @RequestMapping(path = "/variable/{variableName}", method = RequestMethod.PUT,
+            consumes = "text/plain", produces = "text/plain")
+    public void putVariable(@PathVariable String variableName,
+                            @RequestBody String expr) throws ParsingException {
+        calculator.setVariableExpression(variableName, expr);
+    }
+
+    @RequestMapping(path = "/variable/{variableName}", method = RequestMethod.DELETE)
+    public void deleteVariable(@PathVariable String variableName) {
+        calculator.deleteVariable(variableName);
+    }
+
+    @RequestMapping(path = "/variable", method = RequestMethod.GET)
+    public ArrayList<String> getVariables() {
+        return calculator.getAllVariables();
+    }
+
+
+    @RequestMapping(path = "/function/{functionName}", method = RequestMethod.PUT)
+    public void putFunction(@PathVariable String functionName,
+                            @RequestParam(value = "args") ArrayList<String> args,
+                            @RequestBody String functionBody) throws ParsingException {
+        calculator.setFunction(functionName, new ArrayList<>(args), functionBody);
+    }
+
+    @RequestMapping(path = "/function/{functionName}", method = RequestMethod.DELETE)
+    public Boolean deleteFunction(@PathVariable String functionName) {
+        return calculator.deleteFunction(functionName);
+    }
+
+    @RequestMapping(path = "/function", method = RequestMethod.GET)
+    public ArrayList<String> getFunctionsNames() {
+        return calculator.getAllFunctions();
+    }
+
+    @RequestMapping(path = "/ping", method = RequestMethod.GET, produces = "text/plain")
+    public String echo() {
+        return "OK\n";
+    }
+
+    @RequestMapping(path = "/eval", method = RequestMethod.POST, consumes = "text/plain", produces = "text/plain")
+    public String eval(@RequestBody String expression) throws ParsingException {
+        double result = calculator.evaluateExpression(expression);
+        return Double.toString(result) + "\n";
+    }
+}