feat(vscode-web): support hosting on a subpath with subdomain=false (#288)

Co-authored-by: Muhammad Atif Ali <atif@coder.com>
Co-authored-by: Muhammad Atif Ali <me@matifali.dev>

Author: Emyrk

CONTRIBUTING.md

@@ -47,6 +47,7 @@ You can test a module locally by updating the source as follows
 ```tf
 module "example" {
   source = "git::https://github.com/<USERNAME>/<REPO>.git//<MODULE-NAME>?ref=<BRANCH-NAME>"
+  # You may need to remove the 'version' field, it is incompatible with some sources.
 }
 ```
 

vscode-web/README.md

@@ -14,7 +14,7 @@ Automatically install [Visual Studio Code Server](https://code.visualstudio.com/
 ```tf
 module "vscode-web" {
   source         = "registry.coder.com/modules/vscode-web/coder"
-  version        = "1.0.20"
+  version        = "1.0.22"
   agent_id       = coder_agent.example.id
   accept_license = true
 }
@@ -29,7 +29,7 @@ module "vscode-web" {
 ```tf
 module "vscode-web" {
   source         = "registry.coder.com/modules/vscode-web/coder"
-  version        = "1.0.20"
+  version        = "1.0.22"
   agent_id       = coder_agent.example.id
   install_prefix = "/home/coder/.vscode-web"
   folder         = "/home/coder"
@@ -42,7 +42,7 @@ module "vscode-web" {
 ```tf
 module "vscode-web" {
   source         = "registry.coder.com/modules/vscode-web/coder"
-  version        = "1.0.20"
+  version        = "1.0.22"
   agent_id       = coder_agent.example.id
   extensions     = ["github.copilot", "ms-python.python", "ms-toolsai.jupyter"]
   accept_license = true
@@ -56,7 +56,7 @@ Configure VS Code's [settings.json](https://code.visualstudio.com/docs/getstarte
 ```tf
 module "vscode-web" {
   source     = "registry.coder.com/modules/vscode-web/coder"
-  version    = "1.0.20"
+  version    = "1.0.22"
   agent_id   = coder_agent.example.id
   extensions = ["dracula-theme.theme-dracula"]
   settings = {

vscode-web/main.tf

@@ -121,6 +121,18 @@ variable "auto_install_extensions" {
   default     = false
 }
 
+variable "subdomain" {
+  type        = bool
+  description = <<-EOT
+    Determines whether the app will be accessed via it's own subdomain or whether it will be accessed via a path on Coder.
+    If wildcards have not been setup by the administrator then apps with "subdomain" set to true will not be accessible.
+  EOT
+  default     = true
+}
+
+data "coder_workspace_owner" "me" {}
+data "coder_workspace" "me" {}
+
 resource "coder_script" "vscode-web" {
   agent_id     = var.agent_id
   display_name = "VS Code Web"
@@ -138,6 +150,7 @@ resource "coder_script" "vscode-web" {
     EXTENSIONS_DIR : var.extensions_dir,
     FOLDER : var.folder,
     AUTO_INSTALL_EXTENSIONS : var.auto_install_extensions,
+    SERVER_BASE_PATH : local.server_base_path,
   })
   run_on_start = true
 
@@ -158,15 +171,21 @@ resource "coder_app" "vscode-web" {
   agent_id     = var.agent_id
   slug         = var.slug
   display_name = var.display_name
-  url          = var.folder == "" ? "http://localhost:${var.port}" : "http://localhost:${var.port}?folder=${var.folder}"
+  url          = local.url
   icon         = "/icon/code.svg"
-  subdomain    = true
+  subdomain    = var.subdomain
   share        = var.share
   order        = var.order
 
   healthcheck {
-    url       = "http://localhost:${var.port}/healthz"
+    url       = local.healthcheck_url
     interval  = 5
     threshold = 6
   }
 }
+
+locals {
+  server_base_path = var.subdomain ? "" : format("/@%s/%s/apps/%s/", data.coder_workspace_owner.me.name, data.coder_workspace.me.name, var.slug)
+  url              = var.folder == "" ? "http://localhost:${var.port}${local.server_base_path}" : "http://localhost:${var.port}${local.server_base_path}?folder=${var.folder}"
+  healthcheck_url  = var.subdomain ? "http://localhost:${var.port}/healthz" : "http://localhost:${var.port}${local.server_base_path}/healthz"
+}

vscode-web/run.sh

@@ -10,10 +10,16 @@ if [ -n "${EXTENSIONS_DIR}" ]; then
   EXTENSION_ARG="--extensions-dir=${EXTENSIONS_DIR}"
 fi
 
+# Set extension directory
+SERVER_BASE_PATH_ARG=""
+if [ -n "${SERVER_BASE_PATH}" ]; then
+  SERVER_BASE_PATH_ARG="--server-base-path=${SERVER_BASE_PATH}"
+fi
+
 run_vscode_web() {
-  echo "👷 Running $VSCODE_WEB serve-local $EXTENSION_ARG --port ${PORT} --host 127.0.0.1 --accept-server-license-terms --without-connection-token --telemetry-level ${TELEMETRY_LEVEL} in the background..."
+  echo "👷 Running $VSCODE_WEB serve-local $EXTENSION_ARG $SERVER_BASE_PATH_ARG --port ${PORT} --host 127.0.0.1 --accept-server-license-terms --without-connection-token --telemetry-level ${TELEMETRY_LEVEL} in the background..."
   echo "Check logs at ${LOG_PATH}!"
-  "$VSCODE_WEB" serve-local "$EXTENSION_ARG" --port "${PORT}" --host 127.0.0.1 --accept-server-license-terms --without-connection-token --telemetry-level "${TELEMETRY_LEVEL}" > "${LOG_PATH}" 2>&1 &
+  "$VSCODE_WEB" serve-local "$EXTENSION_ARG" "$SERVER_BASE_PATH_ARG" --port "${PORT}" --host 127.0.0.1 --accept-server-license-terms --without-connection-token --telemetry-level "${TELEMETRY_LEVEL}" > "${LOG_PATH}" 2>&1 &
 }
 
 # Check if the settings file exists...