✨ : generate tfvar file for the runner

src/main/java/io/gaia_app/runner/RunnerController.java

@@ -0,0 +1,25 @@
+package io.gaia_app.runner;
+
+import io.gaia_app.stacks.repository.StackRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+/**
+ * Controller for the operations that are called by the runner only
+ */
+@RestController
+@RequestMapping("/api/runner")
+public class RunnerController {
+
+    @Autowired
+    private StackRepository stackRepository;
+
+    @GetMapping(value = "/stacks/{id}.tfvars", produces = "text/plain")
+    public String tfvars(@PathVariable String id){
+        var stack = stackRepository.findById(id).orElseThrow();
+        return stack.tfvars();
+    }
+}

src/main/java/io/gaia_app/runner/StackCommandBuilder.java

@@ -8,18 +8,13 @@
 import io.gaia_app.stacks.bo.Job;
 import io.gaia_app.stacks.bo.Stack;
 import io.gaia_app.stacks.bo.mustache.TerraformScript;
-import io.gaia_app.modules.bo.TerraformModule;
-import io.gaia_app.stacks.bo.Job;
-import io.gaia_app.stacks.bo.Stack;
-import io.gaia_app.stacks.bo.mustache.TerraformScript;
 import org.apache.commons.lang.StringUtils;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Component;
 
 import java.io.IOException;
 import java.io.StringWriter;
 import java.util.List;
-import java.util.function.BiFunction;
 
 /**
  * A builder class to create stack commands
@@ -56,8 +51,7 @@ private String evalGitRepositoryUrl(TerraformModule module) {
                 .orElse(url);
     }
 
-    private String buildScript(Job job, Stack stack, TerraformModule module,
-                               BiFunction<Stack, TerraformModule, String> command) {
+    private String buildScript(Job job, Stack stack, TerraformModule module, String command) {
         var script = new TerraformScript()
                 .setExternalUrl(settings.getExternalUrl())
                 .setStateApiUser(runnerApiSecurityProperties.getUsername())
@@ -70,7 +64,7 @@ private String buildScript(Job job, Stack stack, TerraformModule module,
             script.setGitDirectory(module.getDirectory());
         }
 
-        script.setCommand(command.apply(stack, module));
+        script.setCommand(command);
 
         var writer = new StringWriter();
         try {
@@ -82,31 +76,13 @@ private String buildScript(Job job, Stack stack, TerraformModule module,
         return StringUtils.EMPTY;
     }
 
-    private String buildCommand(Stack stack, TerraformModule module, String command) {
-        var varFormatString = "-var \"%s=%s\" ";
-        var variablesBuilder = new StringBuilder();
-
-        module.getVariables().forEach(terraformVariable -> {
-
-            var name = terraformVariable.getName();
-            String value = terraformVariable.getDefaultValue();
-            // try getting the value from the stack
-            if (stack.getVariableValues().containsKey(name)) {
-                value = stack.getVariableValues().get(name);
-            }
-            variablesBuilder.append(String.format(varFormatString, name, value));
-        });
-
-        return String.format("%s %s", command, variablesBuilder.toString());
-    }
-
     /**
      * builds the terraform plan script
      *
      * @return
      */
     String buildPlanScript(Job job, Stack stack, TerraformModule module) {
-        return buildScript(job, stack, module, this::buildPlanCommand);
+        return buildScript(job, stack, module, "terraform plan -detailed-exitcode");
     }
 
     /**
@@ -115,7 +91,7 @@ String buildPlanScript(Job job, Stack stack, TerraformModule module) {
      * @return
      */
     String buildApplyScript(Job job, Stack stack, TerraformModule module) {
-        return buildScript(job, stack, module, this::buildApplyCommand);
+        return buildScript(job, stack, module, "terraform apply -auto-approve");
     }
 
     /**
@@ -124,7 +100,7 @@ String buildApplyScript(Job job, Stack stack, TerraformModule module) {
      * @return
      */
     String buildPlanDestroyScript(Job job, Stack stack, TerraformModule module) {
-        return buildScript(job, stack, module, this::buildPlanDestroyCommand);
+        return buildScript(job, stack, module, "terraform plan -destroy -detailed-exitcode");
     }
 
     /**
@@ -133,51 +109,7 @@ String buildPlanDestroyScript(Job job, Stack stack, TerraformModule module) {
      * @return
      */
     String buildDestroyScript(Job job, Stack stack, TerraformModule module) {
-        return buildScript(job, stack, module, this::buildDestroyCommand);
-    }
-
-    /**
-     * builds the terraform plan command
-     *
-     * @param stack
-     * @param module
-     * @return
-     */
-    String buildPlanCommand(Stack stack, TerraformModule module) {
-        return buildCommand(stack, module, "terraform plan -detailed-exitcode");
-    }
-
-    /**
-     * builds the terraform apply command
-     *
-     * @param stack
-     * @param module
-     * @return
-     */
-    String buildApplyCommand(Stack stack, TerraformModule module) {
-        return buildCommand(stack, module, "terraform apply -auto-approve");
-    }
-
-    /**
-     * builds the terraform plan destroy command
-     *
-     * @param stack
-     * @param module
-     * @return
-     */
-    String buildPlanDestroyCommand(Stack stack, TerraformModule module) {
-        return buildCommand(stack, module, "terraform plan -destroy -detailed-exitcode");
-    }
-
-    /**
-     * builds the terraform destroy command
-     *
-     * @param stack
-     * @param module
-     * @return
-     */
-    String buildDestroyCommand(Stack stack, TerraformModule module) {
-        return buildCommand(stack, module, "terraform destroy -auto-approve");
+        return buildScript(job, stack, module, "terraform destroy -auto-approve");
     }
 
 }

src/main/java/io/gaia_app/stacks/bo/Stack.java

@@ -182,4 +182,24 @@ public String getCredentialsId() {
     public void setCredentialsId(String credentialsId) {
         this.credentialsId = credentialsId;
     }
+
+    /**
+     * Builds tfvars file for this stack
+     * @return a string with the content of the tfvars file
+     */
+    public String tfvars() {
+        var varLine = "%s = \"%s\"\n";
+        var variablesBuilder = new StringBuilder();
+
+        module.getVariables().forEach(terraformVariable -> {
+            var variableName = terraformVariable.getName();
+            var variableValue = terraformVariable.getDefaultValue();
+            // try getting the value
+            if (this.variableValues.containsKey(variableName)) {
+                variableValue = this.variableValues.get(variableName);
+            }
+            variablesBuilder.append(String.format(varLine, variableName, variableValue));
+        });
+        return variablesBuilder.toString();
+    }
 }

src/main/resources/mustache/terraform.mustache

@@ -2,6 +2,9 @@ set -e
 
 echo '[gaia] using image {{terraformImage}}'
 
+echo '[gaia] installing curl'
+apk -q add curl
+
 echo '[gaia] cloning {{gitRepositoryUrl}}' | awk '{ sub(/oauth2:(.*)@/, "oauth2:[MASKED]@");}1'
 git clone {{gitRepositoryUrl}} module
 
@@ -19,6 +22,9 @@ echo 'terraform {
     }
 }' > backend.tf
 
+echo '[gaia] generating tfvars variable file'
+curl --silent --user {{stateApiUser}}:{{stateApiPassword}} {{externalUrl}}/api/runner/stacks/{{stackId}}.tfvars > gaia.auto.tfvars
+
 echo '[gaia] running terraform init'
 terraform version
 terraform init