Make dcae-cli more tolerant aka configurable

* Seeding configuration is no longer a fatal issue
* Setup database connection
* Seeding profiles is no longer a fatal issue

Change-Id: Ica2150a1ca52bb422e4bf6d1213c6eacfb0ba128
Issue-Id: DCAEGEN2-110
Signed-off-by: Michael Hwang <mhwang@research.att.com>

4 files changed, 54 insertions, 13 deletions

diff --git a/dcae-cli/ChangeLog.md b/dcae-cli/ChangeLog.md
index 4e169fc..794b6a7 100644
--- a/dcae-cli/ChangeLog.md
+++ b/dcae-cli/ChangeLog.md
@@ -5,6 +5,13 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/) 
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
+## []
+
+* Make server url (url to webserver that has static artifacts like json schemas) a configuration parameter
+* Seeding configuration is no longer a fatal issue
+* Setup database connection via manual user inputs if seed config not there
+* Seeding profiles is no longer a fatal issue
+
 ## [2.9.0]
 
 * Add data format generate command
diff --git a/dcae-cli/README.md b/dcae-cli/README.md
index bcbc065..2806f5e 100644
--- a/dcae-cli/README.md
+++ b/dcae-cli/README.md
@@ -1,7 +1,19 @@
 # dcae-cli
 
-The DCAE on-boarding Python command-line tool that provides functionality to manage data formats and components.
+The `dcae-cli` is a Python command-line tool used to manage and to test components and their data formats in onboarding.
 
 ## Documentation
 
-Please review the [DCAE platform documentation](ONAP URL TBD) which has a [`dcae-cli` walkthrough](ONAP URL TBD).
+Please review the [DCAE platform documentation](ONAP URL TBD) which has a detailed [`dcae-cli` walkthrough](ONAP URL TBD).
+
+## Local use
+
+The dcae-cli requires access to an onboarding catalog which is a postgres database.  If there is no shared instance for your team or organization, then a workaround is to run a local instance of postgres on your machine.  One quick way is to run a postgres Docker container:
+
+```
+docker run -e POSTGRES_PASSWORD=<your password> -e PGDATA=/var/lib/postgresql/data/pgdata -v <local directory>:/var/lib/postgresql/data/pgdata -p 5432:5432 -d postgres:9.5.2
+```
+
+Use your favorite sql client to log into this local instance and create a database named `dcae_onboarding_db`.
+
+Now that your onboarding catalog is setup, run `dcae_cli --reinit` and walkthrough the prompts to configure your dcae-cli to point to this local instance.
diff --git a/dcae-cli/dcae_cli/util/config.py b/dcae-cli/dcae_cli/util/config.py
index 6a53de4..d3d9f16 100644
--- a/dcae-cli/dcae_cli/util/config.py
+++ b/dcae-cli/dcae_cli/util/config.py
@@ -51,28 +51,44 @@ def _init_config_user():
             click.echo("Invalid user id. Please try again.")
 
 def _init_config_server_url():
-    return click.prompt('Please enter the remote server url', type=str).strip()
+    return click.prompt("Please enter the remote server url", type=str).strip()
+
+def _init_config_db_url():
+    click.echo("Now we need to set up access to the onboarding catalog")
+    hostname = click.prompt("Please enter the onboarding catalog hostname").strip()
+    user = click.prompt("Please enter the onboarding catalog user").strip()
+    password = click.prompt("Please enter the onboarding catalog password").strip()
+    return "postgresql://{user}:{password}@{hostname}:5432/dcae_onboarding_db".format(
+            hostname=hostname, user=user, password=password)
 
 def _init_config():
     '''Returns an initial dict for populating the config'''
     # Grab the remote config and merge it in
+    new_config = {}
+
     try:
         server_url = _init_config_server_url()
         new_config = util.fetch_file_from_web(server_url, "/dcae-cli/config.json")
         new_config["server_url"] = server_url
     except:
-        # REVIEW: Should we allow users to manually setup their config if not
-        # able to pull from remote server?
-        raise ConfigurationInitError("Could not download configuration from remote server")
+        # Failing to pull seed configuration from remote server is not considered
+        # a problem. Just continue and give user the option to set it up
+        # themselves.
+        if not click.confirm("Could not download initial configuration from remote server. Attempt manually setting up?"):
+            raise ConfigurationInitError("Could not setup dcae-cli configuration")
 
     new_config["user"] = _init_config_user()
     new_config["cli_version"] = _version.__version__
 
     if "db_url" not in new_config or not new_config["db_url"]:
-        # Really you should never get to this point because the remote config
-        # should have a postgres db url.
-        fallback = ''.join(('sqlite:///', os.path.join(get_app_dir(), 'dcae_cli.db')))
-        new_config["db_url"] = fallback
+        # The seed configuration was not provided so manually set up the db
+        # connection
+        new_config["db_url"] = _init_config_db_url()
+
+    if "active_profile" not in new_config:
+        # The seed configuration was not provided which means the profiles will
+        # be the same. The profile will be hardcoded to a an empty default.
+        new_config["active_profile"] = "default"
 
     return new_config
 
diff --git a/dcae-cli/dcae_cli/util/profiles.py b/dcae-cli/dcae_cli/util/profiles.py
index 83a7ca9..34580d6 100644
--- a/dcae-cli/dcae_cli/util/profiles.py
+++ b/dcae-cli/dcae_cli/util/profiles.py
@@ -27,6 +27,7 @@ import os
 from collections import namedtuple
 
 import six
+import click
 
 from dcae_cli import util
 from dcae_cli.util import get_app_dir, get_pref, write_pref
@@ -98,9 +99,14 @@ def reinit_profiles():
         server_url = config.get_server_url()
         new_profiles = util.fetch_file_from_web(server_url, "/dcae-cli/profiles.json")
     except:
-        # REVIEW: Should we allow users to manually setup their config if not
-        # able to pull from remote server?
-        raise ProfilesInitError("Could not download profiles from remote server")
+        # Failing to pull seed profiles from remote server is not considered
+        # a problem. Just continue and give user the option to use an empty
+        # default.
+        if click.confirm("Could not download initial profiles from remote server. Set empty default?"):
+            new_profiles = {"default": { "consul_host": "", "config_binding_service": "", 
+                "cdap_broker": "", "docker_host": ""}}
+        else:
+            raise ProfilesInitError("Could not setup dcae-cli profiles")
 
     profiles_path = get_profiles_path()