Merge pull request #12 from fluencelabs/builtins_deployment

wip: add builtins deployment tutorial

tutorials_tutorials/deploy-builtins.md

@@ -0,0 +1,64 @@
+# Add your own builtin service
+
+If you want to have a service that available out-of-the-box with startup script and scheduled scripts, you can use `builtins deployer` feature. It will upload modules, deploy service, run init script and schedule others.  
+You should put your service files in the corresponding folder specified in config as `builtins_base_dir`.
+
+
+
+## Builtins directory structure
+```
+-- builtins
+    -- {service_alias}
+        -- scheduled
+            -- {script_name}_{interval_in_seconds}.air [optional]
+        -- blueprint.json
+        -- on_start.air [optional]
+        -- on_start.json [optional]
+        -- {module1_name}.wasm
+        -- {module1_name}_config.json
+        -- {module2_name}.wasm
+        -- {module2_name}_config.json
+        ...
+```
+In blueprint you can specify dependencies either with name or hashes but .wasm files and config should have corresponding names.
+`blieprint.json` example:
+
+```json
+{
+  "name": "aqua-dht",
+  "dependencies": [
+    "hash:558a483b1c141b66765947cf6a674abe5af2bb5b86244dfca41e5f5eb2a86e9e",
+    "name:aqua-dht"
+  ]
+}
+```
+
+So modules and configs names should look like this:
+
+```
+-- aqua-dht.wasm
+-- aqua-dht_config.json
+-- 558a483b1c141b66765947cf6a674abe5af2bb5b86244dfca41e5f5eb2a86e9e.wasm
+-- 558a483b1c141b66765947cf6a674abe5af2bb5b86244dfca41e5f5eb2a86e9e_config.json
+```
+
+`on_start.air` is optional and can contain some startup script and you can specify necessary variables in `on_start.json`. It will be executed only once after service deployment or node restart.
+
+`on_start.json` example:
+
+```json
+{
+    "variable1" : "some_string",
+    "variable2" : 5,
+}
+```
+
+`on_start.air` example:
+
+```
+(seq
+    (call relay ("some_service_alias" "some_func1") [variable1] result)
+    (call relay ("some_service_alias" "some_func2") [variable2 result])
+)
+```
+